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Background and Objectives: Lateral ankle injuries are commonly encountered injuries, and the open modified Broström operation (OMBO) is the primary treatment option. Recently, an arthroscopic modification of the Broström operation (AMBO) was developed; many studies have shown that there are no significant differences in clinical and radiological outcomes between the two surgical methods. However, no studies have been conducted comparing the two surgical methods in terms of return to play (RTP) time. This study assesses the time to RTP and the functional clinical outcomes. Materials and Methods: Sixty patients were enrolled from January 2012 to July 2014. They were segregated into two cohorts: the AMBO group comprised 30 patients, while the OMBO group comprised another 30 patients. Each participant underwent standardized treatment and rehabilitation regimens and RTP time was measured using seven questions that explored the times to return of painless walking, running, jumping, squatting, climbing stairs, and rising up on the heels and toes. We compared the time intervals from the onset of instability to the date of surgery. Clinical outcomes were evaluated before the surgery, 6 weeks after surgery, and 6 months after surgery. The assessments included the American Orthopedic Foot & Ankle Society (AOFAS) ankle–hindfoot score, the pain visual analog scale (VAS) score, subjective satisfaction with rehabilitation, and activity level. Results: In terms of RTP, AMBO was associated with a shorter interval to walking without pain (7.07 ± 2.96 weeks) relative to OMBO (11.03 ± 8.58 weeks). No disparities were observed in the time to return to play (RTP) between OMBO and AMBO. While there were no discrepancies in the 6-month postoperative AOFAS or VAS scores, the 6-week postoperative VAS score was notably lower in the AMBO group compared to the OMBO group. AMBO provided a faster RTP in terms of two of the seven questions in a group exhibiting high-level physical activity. The rate of subjective satisfaction with rehabilitation was higher for AMBO than for OMBO. Conclusions: Aside from walking, the duration to return to play and the clinical outcomes were similar between AMBO and OMBO treatments for lateral ankle instability. AMBO is a good treatment option and should be carefully considered for athletes with lateral ankle instability. AMBO demonstrated positive outcomes in a group with higher activity levels compared to others, particularly in terms of time to RTP, subjective satisfaction, and postoperative pain.

Soft tissue calcifications frequently appear on imaging studies, representing a prevalent but non-specific discovery, varying from a local reaction without clear cause to suggesting an underlying systemic condition. Because calcifications like these can arise from various causes, an accurate differential diagnosis is crucial. Differential diagnosis entails a methodical assessment of the patient, encompassing clinical presentation, medical history, radiological and pathological findings, and other pertinent factors. Through scrutiny of the patient’s medical and trauma history, we can refine potential causes of calcification to vascular, metabolic, autoimmune, neoplastic, or traumatic origins. Furthermore, routine laboratory assessments, including serum levels of calcium, phosphorus, ionized calcium, vitamin D metabolites, and parathyroid hormone (PTH), aid in identifying metabolic etiologies. We describe a rare occurrence of osteoma cutis in a 15-year-old female patient with a history of pseudohypoparathyroidism (PHP) and Albright’s hereditary osteodystrophy (AHO). The patient presented with a painful mass on the lateral side of her left foot. The diagnosis was based on medical history, laboratory tests, and imaging, leading to an excisional biopsy and complete pain relief post-surgery. Understanding such rare occurrences and related conditions is crucial for accurate diagnosis and management.

Background and objectives: Diabetic foot stands out as one of the most consequential and devastating complications of diabetes. Many factors, including VIPS (Vascular management, Infection management, Pressure relief, and Source of healing), influence the prognosis and treatment of diabetic foot patients. There are many studies on VIPS, but relatively few studies on “sources of healing”. Nutrients that affect wound healing are known, but objective data in diabetic foot patients are insufficient. We hypothesized that “sources of healing” would have many effects on wound healing. The purpose of this study is to know the affecting factors related to the source of healing for diabetic foot patients. Materials and Methods: A retrospective review identified 46 consecutive patients who were admitted for diabetic foot management from July 2019 to April 2021 at our department. Several laboratory tests were performed for influencing factor evaluation. We checked serum levels of total protein, albumin, vitamin B, iron, zinc, magnesium, copper, Hb, HbA1c, HDL cholesterol, and LDL cholesterol. These values of diabetic foot patients were compared with normal values. Patients were divided into two groups based on wound healing rate, age, length of hospital stay, and sex, and the test values between the groups were compared. Results: Levels of albumin (37%) and Hb (89%) were low in the diabetic foot patients. As for trace elements, levels of iron (97%) and zinc (95%) were low in the patients, but levels of magnesium and copper were usually normal or high. There were no differences in demographic characteristics based on wound healing rate. However, when compared to normal adult values, diabetic foot patients in our data exhibited significantly lower levels of hemoglobin, total protein, albumin, iron, zinc, copper, and HDL cholesterol. When compared based on age and length of hospital stay, hemoglobin levels were significantly lower in both the older age group and the group with longer hospital stays. Conclusions: Serum levels of albumin, Hb, iron, and zinc were very low in most diabetic foot patients. These low values may have a negative relationship with wound healing. Nutrient replacements are necessary for wound healing in diabetic foot patients.

Introduction: Distal tibial fractures make up approximately 3% to 10% of all tibial fractures or about 1% of lower extremity fractures. MIPO is an appropriate procedure and method to achieve stable metal plate fixation and osseointegration by minimizing soft tissue damage and vascular integrity at the fracture site. MIPO to the medial tibia during distal tibial fractures induces skin irritation due to the thickness of the metal plate, which causes discomfort and pain on the medial side of the distal leg, and if severe, complications such as infection and skin defect may occur. The reverse sural flap is a well-researched approach for covering defects in the lower third of the leg, ankle, and foot. Materials and Methods: Among 151 patients with distal tibia fractures who underwent minimally invasive metal plate fixation, soft tissue was injured due to postoperative complications. We treated 13 cases with necrosis and exposed metal plates by retrograde nasogastric artery flap surgery. For these patients, we collected obligatory patient records, radiological data, and wound photographs of the treatment results and complications of reconstructive surgery. Results: In all the cases, flap survival was confirmed at the final outpatient follow-up. The exposed area of the metal plate was well coated, and there was no plate failure due to complete necrosis. Three out of four women complained of aesthetic dissatisfaction because the volume of the tunnel through which the skin mirror passed and the skin plate itself were thick. In two cases, defatting was performed to reduce the thickness of the plate while removing the metal plate. Conclusions: Metal plate exposure after distal tibial fractures have been treated with minimally invasive metal plate fusion and can be successfully treated with retrograde nasogastric artery flaps, and several surgical techniques are used during flap surgery.

Extensor hallucis longus tendon injury is relatively rare and is principally caused by a laceration when a sharp object is dropped on the instep. Primary suturing is possible if the injury is acute, but if the tear is chronic, tendon contracture causes the space between the edges of the tear to widen, disrupting the end-to-end connection. In particular, a claw toe or checkrein foot deformity may develop over time due to adhesion of the lower leg tendons near the fracture site or scar. We report on a 44-year-old man who visited our outpatient clinic complaining of pain in the right foot and a hindered ability to extend his great toe. He had enjoyed playing soccer during his schooldays; since that time, the extension of that toe had become somewhat difficult. T2-weighted sagittal magnetic resonance imaging revealed that the continuity of the extensor hallucis longus tendon had been lost at the distal phalangeal base attachment site, and that the region of the proximal tendon was retracted to level of the middle shaft of the proximal phalanx. The findings allowed us to diagnose extensor hallucis longus tendon rupture accompanying osteoarthritic changes in the joint and soft tissues. We performed surgical tenorrhaphy and adhesiolysis. This is a rare case of extensor hallucis longus tendon rupture caused by minor trauma. Arthritis that developed at a young age caused the adhesions. If patients with foot and ankle arthritis show tendon adhesion at the arthritic site, tendon rupture can develop even after minor trauma or intense stretching.

Background: The arthroscopic Broström procedure is a promising treatment for chronic ankle instability. However, little is known regarding the location of the intermediate superficial peroneal nerve at the level of the inferior extensor retinaculum; knowledge about this location is important for procedural safety. The purpose of this cadaveric study was to clarify the anatomical relationship between the intermediate superficial peroneal nerve and the sural nerve at the level of the inferior extensor retinaculum. Methods: Eleven dissections of cadaveric lower extremities were performed. The origin of the experimental three-dimensional axis was defined as the location of the anterolateral portal during ankle arthroscopy. The distances from the standard anterolateral portal to the inferior extensor retinaculum, sural nerve, and intermediate superficial peroneal nerve were measured using an electronic digital caliper. The location of inferior extensor retinaculum, the tract of sural nerve, and intermediate superficial peroneal nerve were checked using average and standard deviations. For the statistical analyses, data are presented as average ± standard deviation, and then they are reported as means and standard deviations. Fisher’s exact test was used to identify statistically significant differences. Results: At the level of the inferior extensor retinaculum, the mean distances from the anterolateral portal to the proximal and distal intermediate superficial peroneal nerve were 15.9 ± 4.1 (range, 11.3–23.0) mm and 30.1 ± 5.5 (range, 20.8–37.9) mm, respectively. The mean distances from the anterolateral portal to the proximal and distal sural nerve were 47.6 ± 5.7 (range, 37.4–57.2) mm and 47.2 ± 4.1 (range, 41.0–51.8) mm), respectively. Conclusions: During the arthroscopic Broström procedure, the intermediate superficial peroneal nerve may be damaged by the anterolateral portal; the proximal and distal parts of the intermediate superficial peroneal nerve were located within 15.9 and 30.1 mm, respectively, at the level of the inferior extensor retinaculum in cadavers. These areas should be considered danger zones during the arthroscopic Broström procedure.

Background and Objectives: Diesel exhaust particles (DEPs) are a major component of air pollution and adversely affect respiratory and cardiovascular disease and diabetic foot ulcers if diabetic patients are exposed to them. There are currently no studies on treating diabetic wounds exposed to DEPs. So, the effect of a combination of probiotics and Korean red ginseng on a diabetic wound model exposed to DEPs was confirmed. Materials and Methods: Rats were randomly divided into three groups according to DEP inhalation concentration and whether they underwent applications of probiotics (PB) and Korean red ginseng (KRG). Wound tissue was collected from all rats, and wound healing was evaluated using molecular biology and histology methods. Results: The wound size of all groups decreased over time, but there was no significant difference. As a result of the molecular biology experiment, the expression of NF-κB p65 on day 7 was significantly higher in group 2 than in the normal control group. As a result of histological analysis, unlike the primary control group, it was confirmed that granule tissue was formed on the 14th day in the normal control group and group 2. Conclusions: The findings in this study suggest that combined treatment with PB and KRG can promote the healing of DEP-exposed diabetic wounds.

Abstract Background We aimed to evaluate whether arthroscopic microfracture with atelocollagen augmentation could improve the clinical outcomes and quality of regenerated cartilage in patients with osteochondral lesion of the talus (OLT). We hypothesized that the clinical outcomes and quality of the regenerated cartilage would be superior in patients undergoing arthroscopic microfracture with atelocollagen augmentation compared to those undergoing arthroscopic microfracture alone. Methods In this multicenter, randomized controlled trial, 60 patients were randomly allocated to two groups: arthroscopic microfracture with atelocollagen augmentation (group 1, n = 31) and arthroscopic microfracture alone (group 2, n = 29). Mean 100-mm visual analog scale (VAS), Hannover scoring system (HSS), and American Orthopedic Foot and Ankle Society (AOFAS) scores were assessed 2 years postoperatively and compared between the groups. The quality of the regenerated cartilage was assessed according to the Magnetic Resonance Observation of CArtilage Repair Tissue (MOCART) score based on magnetic resonance imaging. Results Forty-six patients (22 in group 1, 23 in group 2) completed the 2-year follow-up. The quality of the regenerated cartilage assessed based on the MOCART score was significantly superior in group 1 compared to group 2 (64.49 ± 18.27 vs 53.01 ± 12.14, p = 0.018). Clinical outcomes in terms of 100-mm VAS (17.25 ± 20.31 vs 19.37 ± 18.58, p = 0.72), HSS (93.09 ± 13.64 vs 86.09 ± 13.36, p = 0.14), and AOFAS (91.23 ± 8.62 vs 86.91 ± 10.68, p = 0.09) scores were superior in group 1 compared to group 2, but the differences were not statistically significant. Both groups showed significant improvements in clinical outcomes compared with the preoperative values. Conclusion The quality of the regenerated cartilage was superior after arthroscopic microfracture with atelocollagen augmentation compared to that after microfracture alone in patients with OLT. Clinical outcomes assessed 2 years postoperatively were superior in patients who underwent arthroscopic microfracture with atelocollagen augmentation compared to those who underwent arthroscopic microfracture alone, although the differences were not statistically significant. A long-term study of the cohort is required to confirm these findings. Trial registration ClinicalTrials.gov ( NCT02519881 ), August 11, 2015.

Background and Objectives: Hallux valgus is one of the most common chronic foot complaints, with prevalences of over 23% in adults and up to 35.7% in older adults. However, the prevalence is only 3.5% in adolescents. The pathological causes and pathophysiology of hallux valgus are well-known in various studies and reports. A change in the position of the sesamoid bone under the metatarsal bone of the first toe is known to be the cause of the initial pathophysiology. Purpose: The relationships between the changes in the location of the sesamoid bone and each radiologically measured angle and joint congruency in the hallux valgus remain as yet unknown. Therefore, this study investigated the relationships of sesamoid bone subluxation with the hallux valgus angle, intermetatarsal angle, and metatarsophalangeal joint congruency in hallux valgus patients. The goal is to know the hallux valgus angle, the intermetatarsal angle, and metatarsophalangeal joint congruency’s correlation with hallux valgus severity and prognosis by revealing the relationship between each measured value and sesamoid bone subluxation. Materials and Methods: We reviewed 205 hallux valgus patients who underwent radiographic evaluation and subsequent hallux valgus correction surgery in our orthopedic clinic between March 2015 and February 2020. Sesamoid subluxation was assessed using a new five-grade scale on foot radiographs, and other radiologic measurements were assessed, such as hallux valgus angle, the intermetatarsal angle, distal metatarsal articular angle, joint congruency, etc. Conclusions: Measurements of the hallux valgus angle, interphalangeal angle, and joint congruency exhibited high interobserver and intraobserver reliabilities in this study. They also showed correlations with sesamoid subluxation grade.

(1) Background: Achilles tendon rupture is a common sports injury that may result in severe disability. The overall incidence of Achilles tendon rupture is increasing as a result of growing sports participation. However, cases of spontaneous bilateral Achilles tendon rupture with no underlying disease or risk factors, such as systemic inflammatory disease, steroid or (fluoro)quinolone antibiotics use, are rare. (2) Objective: Here, we report a case of a Taekwondo athlete’s bilateral Achilles tendon rupture after kicking and landing. By sharing the experience of treatment and the patient’s course, we suggest one of the possible treatment options and the need to establish a treatment method. (3) Procedure: A 23-year-old male Taekwondo athlete visited the hospital, presenting foot plantar flexion failure and severe pain in both tarsal joints, which had occurred upon kicking and landing on both feet earlier that day. During surgery, no degenerative changes or denaturation were observed in the ruptured areas of the Achilles tendons. Bilateral surgery was performed using the modified Bunnel method on the right side and minimum-section suturing on the left side was performed using the Achillon system, followed by lower limb casting. (4) Result: Good outcomes were observed on both sides at 19 months postoperatively. (5) Conclusion: The possibility of bilateral Achilles tendon rupture during exercise in young subjects with no risk factors should be acknowledged, especially in association with landing. In addition, in athletes, even if there is a possibility of complications, surgical treatment should be considered for functional recovery.

Background and Objectives: The purpose of this study was to assess the cytotoxicity and antibacterial effects of AgNP-impregnated Tetracalcium phosphate-dicalcium phosphate dihydrate (TTCP-DCPD). Materials and Methods: Using in vitro experiments, the cytotoxicity of AgNP-impregnated TTCP-DCPD against fibroblasts and osteocytes was assessed in terms of cell viability by water-soluble tetrazolium salt assay. To assess antibacterial effects, a disc diffusion test was used; osteomyelitis was induced first in vivo, by injection of methicillin-resistant Staphylococcus aureus into the tibia of rats. AgNP-impregnated TTCP-DCPD bone cement was then applied at various silver concentrations for 3 or 12 weeks. Antibacterial effects were assessed by culturing and reverse transcription-polymerase chain reaction (RT-PCR). For histological observation, the bone tissues were stained using hematoxylin and eosin. Results: Cell viability was decreased by the impregnated bone cement but did not differ according to AgNP concentration. The diameter of the growth-inhibited zone of MRSA was between 4.1 and 13.3 mm on the disks treated with AgNP, indicating antimicrobial effects. In vivo, the numbers of bacterial colonies were reduced in the 12-week treatment groups compared to the 3-week treatment groups. The groups treated with a higher (10×) dose of AgNP (G2–G5) showed a tendency of lower bacterial colony counts compared to the group without AgNP (G1). The PCR analysis results showed a tendency of decreased bacterial gene expression in the AgNP-impregnated TTCP-DCPD groups (G2–G5) compared to the group without AgNP (G1) at 3 and 12 weeks. In the H&E staining, the degree of inflammation and necrosis of the AgNP-impregnated TTCP-DCPD groups (G2–G5) showed a tendency to be lower at 3 and 12 weeks compared to the control group. Our results suggest that AgNP-impregnated TTCP-DCPD cement has antimicrobial effects. Conclusions: This study indicates that AgNP-impregnated TTCP-DCPD bone cement could be considered to treat osteomyelitis.

Category: Ankle; Basic Sciences/Biologics Introduction/Purpose: The treatment of syndesmotic injuries with ankle fractures is controversial. The purpose of this study was to compare the biomechanical properties of suture-button fixation with suture-tape augmentation with those of screw fixation. Methods: Ten matched pairs of human cadaver specimens were subjected to suture-button fixation with suture-tape augmentation or screw fixation. Each specimen underwent initial intact physiologic loading, consisting of 10 cycles of axial loading with peak of 750N, 10 cycles of external torsional loading with peak of 7.5Nm, and 10 cycles of combined axial and external torsional loading with peak of 750N and 7.5Nm at 0.05 Hz. Injuries of the anterior inferior tibiofibular ligament, tibiofibular interosseous membrane, posterior tibiofibular ligament and medial malleolar fracture were applied to each specimen. Postfixation cyclic loading consisted of 50 cycles of combinedaxial and external rotation loading with peak torques of 750 N and 7.5 Nm at a rate of 0.05 Hz. After postfixation loading, each specimen underwent failure loading by external rotation at 0.25 degrees/second. Failure torque and failure angle were measured. Results: Mean failure torques were 15.99 +- 8.88 Nm in the suture-button fixation with suture-tape augmentation and 17.10 +- 10.38 Nm in the screw group. There was no significant difference in average failure torque between two groups (p-value = 0.669)Average failure angle in screw-fixation group (39.37 +- 10.19 deg) was significantly lower than average failure angle suture- button fixation with suture-tape augmentation (56.64 +- 9.64 deg) (p-value = 0.001).Average rotational stiffness in screw-fixation group (0.53 +- 0.24 Nm/deg) was significantly higher than average rotational stiffness in suture-button fixation with suture-tape augmentation group (0.35 +- 0.19 Nm/deg) (p-value = 0.033). Conclusion: Suture-button fixation with suture-tape augmentation for ankle syndesmotic injury provides similar torsional strength to that of screw fixation and has lower stiffness than screw fixation. Therefore, Suture-button fixation with suture-tape augmentation can be considered as an alternative treatment option for syndesmosis injury.

Category: Basic Sciences/Biologics; Ankle Introduction/Purpose: To investigate the functional characteristics of the anterior talofibular ligament (ATFL) in the ankle, we divided the ligament into three parts and compare the distribution of mechanoreceptors in each part by type. Methods: The ATFL were obtained from 20 ankles of 10 fresh-frozen cadavers. The ligament was divided into three parts: fibula attach, mid-substance, and talar attach. Historically, mechanoreceptors were identified and classified as Ruffini (type I), Vater-Pacini (type II), Golgi-Mazzoni (type III) corpuscle, Free nerve ending (type IV). Difference in receptor density were compared. Results: The ATFL were obtained from 20 ankles of 10 fresh-frozen cadavers. The ligament was divided into three parts: fibula attach, mid-substance, and talar attach. Historically, mechanoreceptors were identified and classified as Ruffini (type I), Vater-Pacini (type II), Golgi-Mazzoni (type III) corpuscle, Free nerve ending (type IV). Difference in receptor density were compared. Conclusion: There were no significant differences in the densities of the four types of mechanoreceptors among the three parts of the ATFL.

Category: Trauma; Basic Sciences/Biologics Introduction/Purpose: Ankle fractures, representing 9% of all fractures, are among the most common types of fractures worldwide. 1 of 5 ankle fractures is an isolated medial malleolar fracture (IMMF). IMMF were treated surgically, but recently it was concluded that all IMMF(

Category: Arthroscopy; Ankle; Arthroscopy Introduction/Purpose: The Modified Broström Operation (MBO) has been frequently used to treat chronic lateral ankle instability. Recent studies of arthroscopic anterior talofibular ligament (ATFL) repair found that if the ligament is detached at the fibular attachment or there is sufficient remnant tissue, it can be directly repaired using suture anchors. In this study, ATFL injuries were classified and the feasibility of arthroscopic ATFL repair according to injury type was determined. The diagnostic validity of magnetic resonance imaging (MRI) of ATFL injuries was investigated by comparing MRI and arthroscopic findings. Methods: The 197 ankles (93 right, 104 left; 12 bilateral) of 185 patients (90 men and 107 women; mean age, 33.5 years, range: 15-68 years) were treated between September 2015 and October 2019. All patients underwent arthroscopic MBO after a diagnosis of chronic lateral ankle instability. ATFL injuries were classified according to their grade and arthroscopically determined location (type 2: partial rupture, type 3A: fibular detachment, type 3B: talar detachment, type 3C: midsubstance rupture, type 3D: absence of ATFL, type 3E: os subfibulare). Two musculoskeletal radiologists blinded to the surgical findings evaluated all of the ankle injuries and classified them as described above. An oblique-coronal MRI sequence was used to improve diagnostic accuracy. Results: The kappa value for interobserver reliability was 0.82 (95% confidence interval [CI], 0.76-0.88), indicating excellent interobserver reliability. The kappa value for the agreement between the arthroscopic findings and MRI findings was also high (0.85; 95% CI, 0.79-0.91). Among the 197 injured ankles, according to ankle arthroscopy, 67 were type 2 (34%), 28 were type 3A (14%), 13 were type 3B (7%), 29 were type 3C (15%), 26 were type 3D (13%), and 34 were type 3E (17%). Conclusion: In this study, arthroscopic ATFL repair was feasible in ~14% of ATFL injuries related to chronic lateral ankle instability. The ATFL classification system proposed herein could help surgeons to determine treatment options before surgery in patients with ATFL injuries, and even evaluate acute injury. Our results also supported the use of MRI for diagnosing ATFL injuries and showed that it is an informative tool during the preoperative period.

Category: Ankle; Arthroscopy Introduction/Purpose: ATFL (Anterior talofibular ligament) and CFL (Calcaneofibular ligament) are most commonly injured structures when ankle sprained. There has been debate about whether CFL should be recovered by surgery. Recently, several studies have verified that MBP (Modified Broström procedure) with IER (Inferior extensor retinaculum) augmentation demonstrated good outcomes even in patients with ATFL and CFL complex injury. However, some studies presented that IER augmentation cannot cover CFL injuries because of a different vector. If so, we hypothesized that the patients with solitary ATFL injury would show better outcomes comparing with patients with ATFL and CFL complex injury when same arthroscopic MBP was performed for each group. Methods: 208 ankles were included between September 2015 and October 2019. All the patients were underwent arthroscopic MBP with IER augmentation using knotless suture anchor technique. Complete ATFL injuries were determined by arthroscopy and CFL injuries were examined by magnetic resonance image. 26 ankles of which talar tilt angle was less than 9 degrees in ATFL and CFL complex injury group were excluded. Finally, 38 ankles with solitary ATFL injury and 31 ankles with ATFL and CFL complex injury were enrolled. Clinical and radiological outcome were measured and compared between two groups. Clinical outcome was divided into objective and subjective outcome. Objective outcomes were composed of VAS, AOFAS score and FAOS. Subjective outcome was presented as subjective satisfaction score (1: Excellent, 2: Good, 3: Fair, 4: Poor). Improvement of degree of anterior talar translation and talar tilt angle between preoperative and 12 months after surgery was measured as a radiological outcome. Results: P-values of VAS score at preoperative, 3 months, 6 months and 12 months after surgery were 0.3761, 0.2609, 0.3893 and 0.2547 respectively (95% confidence interval[CI]). P-values of AOFAS score at preoperative, 3 months, 6 months and 12 months after surgery were 0.2079, 0.64, 0.6339 and 0.2683 respectively (95% CI). P-values of FAOS and subjective satisfaction score at 12 months after surgery was 0.1379 and 0.6338 respectively (95% CI). P-values of anterior talar translation and talar tilt angle were 0.4371 and 0.0002 respectively (95% CI). The degree of talar tilt angle improvement was -1.91 in solitary ATFL injury group and -5.48 in ATFL and CFL complex injury group. Conclusion: The outcomes of arthroscopic MBP with IER augmentation for chronic lateral ankle instability in patients with Solitary ATFL injury and in patients with ATFL and CFL complex injury showed no differences except talar tilt angle improvement. Though talar tilt angle improvement showed difference between two groups, the degree of improvement was even better in ATFL and CFL complex injury group. It means arthroscopic MBP could be a good treatment options for chronic lateral ankle instability patients regardless of CFL injury.

Charcot neuropathic arthropathy is a relatively rare, chronic disease that leads to joint destruction and reduced quality of life of patients. Early diagnosis of Charcot arthropathy is essential for a good outcome. However, the diagnosis is often based on the clinical course and longitudinal follow-up of patients is required. Charcot arthropathy is suspected in patients with suggestive symptoms and an underlying etiology. Failed spinal surgery is not a known cause of Charcot arthropathy. Herein we report a patient with ankle Charcot neuropathic arthropathy that developed after failed spinal surgery. A 58-year-old man presented to the emergency room due to painful swelling of the left ankle for 2 weeks that developed spontaneously. He underwent spinal surgery 8 years ago that was associated with nerve damage, which led to weakness of great toe extension and ankle dorsiflexion, and sensory loss below the knee. CT and T2-weighted sagittal MRI showed a fine erosive lesion, subluxation, sclerosis, fragmentation, and large bone defects. Based on the patient’s history and radiological findings, Charcot arthropathy was diagnosed. However, the abnormal blood parameters, positive blood cultures, and severe pain despite the decreased sensation suggested a diagnosis of septic arthritis. Therefore, diagnostic arthroscopy was performed. The ankle joint exhibited continued destruction after the initial surgery. Consequently, several repeat surgeries were performed over the next 2 years. Despite the early diagnosis and treatment of Charcot arthropathy, the destruction of the ankle joint continued. Given the chronic disease course and poor prognosis of Charcot arthropathy, it is essential to consider this diagnosis in patients with neuropathy.

Midtarsal dislocations are relatively rare injuries secondary to high-energy trauma and are typically accompanied by disruption of ligamentous structures and fractures of the midfoot. We herein present a case of a pure isolated medial swivel dislocation of the talonavicular joint (TNJ) that was sustained following low-energy trauma without an associated fracture. A 78-year-old woman visited our emergency department with severe pain in the midfoot area of the right foot without neurovascular deficits. She had sustained this injury after severe ankle inversion while going downstairs. Plain radiographs of the right foot showed that the navicular was dislocated medially on the talus; no other malalignments were present. Three-dimensional computed tomography revealed dislocation of the TNJ, but no other tarsal or midtarsal bone fractures or dislocations. A medial dorsal incision was made to expose the TNJ. The dorsal talonavicular ligament was ruptured and interposed between the navicular and talus. The ligament was removed and the TNJ was reduced. The clinical outcome at the 1-year follow-up was satisfactory with no limitations in daily activities. In summary, we have reported an extremely rare case of a pure isolated medial TNJ dislocation in which the interposed dorsal talonavicular ligament served as an obstacle to reduction.

Abstract Background We hypothesized that calcaneal reconstruction can relieve chronic pain due to calcaneal malunion. We report the mid-term follow-up results of calcaneal reconstruction for calcaneal malunion. Methods We reviewed the records of 10 male patients (10 ft) who underwent calcaneal reconstruction for calcaneal malunion between January 2009 and July 2014 at the mid-term follow-up. Talocalcaneal height and angle, calcaneal pitch, calcaneal width, Böhler angle, Stephens classification, and Zwipp classification were evaluated by three orthopedic doctors at each visit (pre-reconstruction, post-reconstruction, and at the last follow-up). Results The mean follow-up period was 67.1 months (range, 48–101 months). The sites of pain before reconstruction were lateral aspect (4 patients), plantar aspect (3 patients), diffuse pain (2 patients), and anterior aspect (1 patient). There was a significant difference in talocalcaneal height, talocalcaneal angle, calcaneal pitch, calcaneal width, and Böhler angle before and after reconstruction (p

Abstract Background Malalignment of the ankle joint has been found after trauma, by neurological disorders, genetic predisposition and other unidentified factors, and results in asymmetrical joint loading. For a medial open wedge supramalleolar osteotomy(SMO), there are some debates as to whether concurrent fibular osteotomy should be performed. We assessed the changes in motion of ankle joint and plantar pressure after supramalleolar osteotomy without fibular osteotomy. Methods Ten lower leg specimens below the knee were prepared from fresh-frozen human cadavers. They were harvested from five males (10 ankles)whose average age was 70 years. We assessed the motion of ankle joint as well as plantar pressure for SS(supra-syndesmotic) SMO and IS(intra-syndesmotic) SMO. After the osteotomy, each specimen was subjected to axial compression from 20 N preload to 350 N representing half-body weight. For the measurement of the motion of ankle joint, the changes in gap and point, angles in ankle joint were measured. The plantar pressure were also recorded using TekScan sensors. Results The changes in the various gap, point, and angles movements on SS-SMO and IS-SMO showed no statistically significant differences between the two groups. Regarding the shift of plantar center of force (COF) were noted in the anterolateral direction, but not statistically significant. Conclusions SS-SMO and IS-SMO with intact fibula showed similar biomechanical effect on the ankle joint. We propose that IS-SMO should be considered carefully for the treatment of osteoarthrosis when fibular osteotomy is not performed because lateral cortex fracture was less likely using the intrasyndesmosis plane because of soft tissue support.

Category: Ankle Introduction/Purpose: Chronic open wound(COW) over lateral malleolus(LM) is hard to manage for high recurrence rate. Characteristic bone to skin structure of LM is vulnerable to pressure or shear force causing bursitis or ulcer leading to bone exposure in some cases. In resting state, ankle is slightly plantar flexed and varus position, so the skin over LM receives tension. This unfavorable condition for vascularity and pressure endurance could be worse when patients have sensory loss, vascular impairment or paraplegia. We hypothesized short leg cast (SLC) or short leg splint (SLS) keeping ankle in neutral position relieves skin tension and reverse this unfavorable condition leading to wound healing. Methods: Between July, 2014 and November, 2018, fifteen patients with COW over LM were included. Infection was accompanied by twelve. Seven patients were diagnosed diabetic foot. Seven patients could not move their affected limb actively due to paraplegia or weakness. Firstly, Vascular evaluation and management was done for ischemic patients. For all patients, repeated debridement for necrotic and infected tissue was done at intervals of two or three days until the viable wound was present. Negative pressure wound therapy(NPWT) was added in non-viable wound cases. SLC or SLS followed these procedures till wound healing. Removable SLS was kept for the patients who could not control lower limb such as paraplegia or weakness after wound healing. Results: Wound healing was achieved in 14 cases(93.3%). It took average 51.4±40.2 days for wound healing. One patient did not succeed in wound healing resulting in below knee amputation because of infection aggravation. There was no recurrence in all wound healed patients. Conclusion: Repetitive COW over LM could be healed using SLC or SLS and the healed wound kept its state with removable SLS. It is considered that conservative treatment for Repetitive COW over LM with SLC or SLS is another favorable treatment option.

Category: Sports Introduction/Purpose: Os Subfibulare(OSF) is an accessory ossicle that lies at the tip of the lateral malleolus of the ankle. Patients with chronic lateral ankle instability (CLAI) have a high incidence of OSF, and there relationship implies that there is a correlation between OSF and CLAI. The all-inside arthroscopic Modified Broström Operation (MBO) has been developed for the treatment of chronic lateral ankle instability (CLAI) and the outcome was reported as good or excellent. But there were no report about comparison of the outcome between OSF and non-OSF patients with chronic lateral ankle instability treated by all-inside arthroscopic MBO. The purpose of this study was to evaluate the clinical and radiologic outcomes of the arthroscopic MBO procedure for CLAI with or without OSF. Methods: From January 2013 to september 2016, arthroscopic MBO was performed on 133 patients with CLAI. Of these, 126 ankles were evaluated for this study. Patients were divided into two groups: the OSF group (26 patients), without OSF group (100 patients). Evaluation tools included the American Orthopedic Foot and Ankle Society (AOFAS) hindfoot ankle score and pain Visual Analogue Scale (VAS) at preoperatively, 6 and 12 months postoperatively for clinical outcomes. And we also evaluated the talar tilt angle in the varus stress radiograph at preoperatively, 6 and 12 months postoperatively for radiologic outcomes. Results: There were no difference in age, sex, preoperative AOFAS hindfoot ankle scores and VAS scores and talar tilt angle between the two groups preoperatively(P >.05). And there also were no difference at the final follow-up (P >.05).The final follow-up AOFAS hindfoot ankle score and Vas in both group showed improvement compared with preoperaive values. Conclusion: There were no difference in both clinical and radiologic outcomes between OSF group and non-OSF group at a minimum 12 months follow-up. We achieved similar successful outcomes in both groups using All-inside arthroscopic MBO. Arthroscopic MBO should be considered as a reasonable alternative method in patients who have chronic lateral ankle instability regardless of the presence of OSF.

Category: Arthroscopy Introduction/Purpose: Although the short-term results of an all-inside arthroscopic Modified Broström operation (MBO) have been as satisfactory as open MBO, there is always a concern about the long-term stability of an arthroscopic MBO. The purpose of this study was to compare clinical and radiologic outcomes of all-inside arthroscopic and open MBOs at mid-term follow up. Methods: From August 2012 to July 2014, totally 87 patients underwent an arthroscopic MBO and an open MBO. Of these, we retrospectively reviewed 48 patients who had a more than 3 years follow-up period. They were divided into two groups: all-inside arthroscopic MBO goup (26 patients), open MBO group (22 patients). The American Orthopaedic Foot & Ankle Society (AOFAS) ankle–hindfoot score, visual analog scale (VAS) score, and Karlsson score were used to evaluate clinical outcomes. Anterior talar translation and talar tilt were used to evaluate radiologic outcomes. Clinical and radiologic outcome evaluations were performed preoperatively, at 12 months postoperatively, and at a final follow-up at a minimum of 36 months postoperatively. Results: Evaluations were performed for 26 ankles in the all-inside arthroscopic MBO group and 22 in the open MBO group. There was no difference in age, gender, symptom duration, preoperative AOFAS, VAS, Karlsson scores, anterior talar translation, or talar tilt between the 2 groups (all P > .05). At the final follow-up, the AOFAS, VAS, and the Karlsson scores had improved significantly in both groups (P < .001). There was no difference in the Karlsson, AOFAS, or VAS scores, anterior talar translation, or talar tilt between the 2 groups at final follow-up (all P > .05). Conclusion: There was no difference in the clinical and radiologic outcome between the all-inside arthroscopic MBO and open MBO for the treatment of lateral ankle instability at up to 3 years after surgery. An all-inside arthroscopic MBO should be a good treatment option in patients who have lateral ankle instability.

Category: Arthroscopy Introduction/Purpose: Lateral ankle instability (LAI) is common injury in general population and open modified Broström operation (OMBO) is standard treatment of lateral ankle instability. Recently arthroscopic modified Broström operation (AMBO) is performed and many studies show that there are no difference in clinical & radiologic outcomes between open and arthroscopic operation. But not previously reported, comparison between OMBO and AMBO with the period of return to practice. The purpose of this study is to evaluate the time of return to practice in patients with clinical functional outcomes. Methods: From January 2012. to July 2014. 60 patients were included. They were divided into 2 groups: AMBO (30 patients) and OMBO (30 patients.). All patients followed a standardized treatment and rehabilitation program. We measured the period of return to practice by 7 Questions asked in each groups to compare period of return to practice. Survey is consisted of about time of walking, running, jumping, squatting, climbing stairs, rising up heels and toes without pain. And we also compared the time from the symptom of instability onset to date of operation. And for clinical outcome, evaluations were performed preoperatively, postoperatively, and 6months postoperatively using the AOFAS ankle-hindfoot score, pain VAS score and subjective satisfaction for rehabilitation, activity level of patients. Results: For comparison of the dates of operation, the average period of AMBO was faster (6.37±3.378 weeks) than OMBO (14.47±5.794 weeks). And for return to practice, AMBO showed faster return to practice (7.07±2.96 weeks) in walking without pain than OMBO (11.03±8.58 weeks). And other survey showed no difference in period of return to practice between OMBO and AMBO. There were no difference in postoperatively 6 month AOFAS and VAS score, but postoperatively VAS score showed significantly lower in AMBO than OMBO. AMBO was found to be faster return to practice in 2 out of 7 questions in high physical activity group, and also subjective satisfaction rate for rehabilitation of AMBO was higher than OMBO. Conclusion: For general population, except walking, there was no difference in the period of return to practice and clinical outcomes between the AMBO and OMBO for the treatment of lateral ankle instability. However, this study showed that AMBO was able to receive the surgery more quickly than OMBO. and AMBO can be a treatment option and should be considered carefully in atheletes who have lateral ankle instability that AMBO showed good results in higher activity level group for period of return to practice, subjective satisfaction, lower postoperatively pain.

Category: Trauma Introduction/Purpose: Calcaneal fracture is the most common fracture in hindfoot. The treatment is challenging, because of various patterns of fractures and high complication rates which leads to high level of dysfunction and low satisfaction of the patients. There are many previous studies reporting various methods about treatment of calcaneal malunion, such as subtalar arthrodesis, corrective osteotomy and corrective osteotomy with subtalar arthrodesis. However, there are no mid-term clinical results reporting about lateral ostectomy and sliding osteotomy, which is called calcaneal reconstruction. The purpose of this study is to evaluate the mid-term clinical and radiologic results of calcaneal reconstruction in the patients who have chronic complications after calcaneal fracture. Methods: Between January 2009 to May 2014, 196 patients (257 feet) were treated by calcaneal fracture. 34 patients (37 feet) underwent calcaneal reconstruction because of the dysfunction and the pain caused by malunion. Inclusion criteria were those whom underwent calcaneal reconstruction and able to be followed up at least 4 years postoperatively. The patients who had severe subtalar arthritis or whom underwent subtalar arthrodesis or simple bone resection were excluded. We reviewed 10 patients (10 feet) postoperatively and at mid-term follow up. Radiologic results including Böhler angle, calcaneal pitch, talocalcaneal height, talar inclination, talocalcaneal angle, talo-1st metatarsal angle, calcaneal width were measured and clinical results including AOFAS Ankle-Hindfoot scale and VAS score were checked preoperative, postoperatively and at the last follow up. The satisfaction of the patient was checked by survey. Results: The mean interval between the first operation and reconstructive operation was 16.6 months. The mean follow-up period after calcaneal reconstruction was 67.1 months. The most common symptom of the patient were pain on the inferior aspect of the lateral malleolus (4 patients) and heel area (3 patients). After calcaneal reconstruction, all the mean values of talocalcaneal height, calcaneal pitch, and Böhler angle were improved, which was statistically significant, respectively. In the postoperative period, 3 patients were very satisfied, 5 were satisfied, and 2 were not satisfied. The results maintained till mid-term follow up. Also, AOFAS and VAS score were improved comparing pre-reconstruction and mid-term follow up. Although the pain did not completely resolved, most of the patients were satisfied postoperatively. Conclusion: In patients without severe subtalar arthritis, the known main causes of the pain in calcaneal malunion are the loss of calcaneal height and hindfoot widening rather than subtalar arthritis. Our results showed signigficant clinical and radiological results by calcaneal reconstruction. And the outcome maintained till mid-term follow up. Calcaneal reconstruction can be a good choice for chronic pain which is caused by malunion of calcaneal fracture without severe subtalar arthritis.

Category: Trauma Introduction/Purpose: Although there are several approaches to the treatment of syndesmosis injury, there is no gold standard technique. Syndesmotic screw fixation is one of commonly used treatment options but there remains debate topics such as implant breakage and the need for device removal. The purpose of this study was to evaluate the clinical, radiologic and arthroscopic outcomes of open syndesmotic repair for open-book type syndesmotic injury as a new treatment option. Methods: We reviewed the clinical, radiographic and arthroscopic results of 20 patients with traumatic injuries to the distal tibiofibular syndesmosis who were treated with open syndesmotic repair. Arthroscopic evaluations including cotton test were performed at the primary and second-look operation. The American Orthopaedic Foot & Ankle Society (AOFAS) ankle–hindfoot score and visual analog scale (VAS) score were used to evaluate clinical outcomes. The measurement of the tibiofibular clear space and tibiofibular overlap were used to evaluate radiologic outcomes. Both Clinical and radiologic outcome evaluations were performed preoperatively, at 6 weeks and 6 months postoperatively, and at a final follow-up at a minimum 12 months postoperatively. The average follow-up period was 15.3 months. Results: The average AOFAS score improved from 45.4 (range 30-68) preoperatively to 94.12 (range 83-100) at the last follow-up (P < .001). The radiologic parameters of the syndesmosis returned to normal range since the first postoperative follow-up. At second-look arthroscopy, all the patients showed negative cotton test results and the gap of distal tibiofibular joint was remained less than 2 mm in all patients. Conclusion: We had excellent clinical, radiologic and arthroscopic results and there is no major complication. Open syndesmotic repair for open-book type syndesmotic injury is effective in healing and maintaining the injured joint. Therefore this procedure could be a reasonable alternative treatment for traumatic syndesmosis injury of the ankle.

Category: Sports. Introduction/Purpose: The modified Broström operation (MBO) is frequently used to treat chronic lateral ankle instability. The open MBO is currently the gold standard procedure for treatment of chronic lateral ankle instability. The all-inside arthroscopic MBO has been developed for chronic lateral ankle instability. Clinical outcome of all-inside arthroscopic MBO was reported as good or excellent. Biomechanically, the stiffness, torque to failure, and degree to failure of all-inside arthroscopic MBO and open MBO have the same results. But there were no report about comparison of clinical outcome between all-inside arthroscopic MBO and open MBO for chronic lateral ankle instability. The purpose of this study is to compare the clinical outcomes of the all- inside arthroscopic MBO and open MBO for chronic lateral ankle instability. Methods: From September 2013 to August 2014, MBO was performed in 87 patients. Of these, 50 consecutive patients were included in terms of inclusion criteria. All patients had giving way, persistent pain and an inability to resume one’s preinjury activity level for more than 6 months. Patients were randomized into 2 groups: all-inside arthroscopic MBO and open MBO using permuted block randomization method. Evaluation was performed preoperatively, at 6 weeks and 6 months postoperatively, and at a final follow-up a minimum of 12 months postoperatively using the Karlsson score, the American Orthopedic Foot and Ankle Society (AOFAS) hindfoot ankle score, pain Visual Analogue Scale (VAS), anterior talar translation, and talar tilt angle. Results: After randomization, 25 ankles were allocated in the all-inside arthroscopic MBO group, and 25 ankles were placed in the open MBO group. Two ankles in the open MBO group were excluded from analysis due to loss of follow-up. Therefore the evaluation was performed for 25 ankles in the all-inside arthroscopic MBO group and 23 ankles in the open MBO group. There were no differences in age, sex, symptom duration, preoperative Karlsson, AOFAS, and VAS scores between the 2 groups (P >.05). At final follow-up, the Karlsson, AOFAS, and VAS scores were significantly improved in both groups (P < .001). There were no differences in the Karlsson, AOFAS, VAS scores, anterior talar translation and talar tilt angle between the 2 groups at final follow-up (P >.05). Conclusion: There was no difference in the clinical evaluation and radiologic evaluation between all-inside arthroscopic MBO group and open MBO group at a minimum 12 months follow-up. All-inside arthroscopic MBO should be carefully considered as a reasonable alternative method in patients who have chronic lateral ankle instability.

Category: Midfoot/Forefoot Introduction/Purpose: Many radiographic measurements have been developed and used for evaluating hallux valgus, but their relationships have not been clearly established. The purpose of the present study was to investigate the relationship and reliability of sesamoid position and other radiographic measurements in hallux valgus. Methods: We included 180 patients(mean age 52 years; 18 males and 162 females) with weightbearing plain radiograph. In anteroposterior view, hallux valgus angle, intermetatarsal angle, distal metatarsal articular angle, proximal phalangeal articular angle, hallux interphalangeal angle, sesamoid subluxation and metatarsophalangeal congruency were measured. In lateral view, Meary angle(tarso-1st metatarsal angle) was measured. 3 trained observers measured. Correlations among the radiographic measurements were analyzed. Relationship of sesamoid position and other radiographic measurements were evaluated using ANOVA or Fisher’s exact test. Results: The sesamoid subluxation had the correlation with the hallux valgus angle (p < 0.001), intermetatarsal angle (p < 0.001) and metatarso-phalangeal joint congruency (p < 0.001). As the sesamoid subluxation grade increased, the metatarso-phalangeal joint congruency was non-congruent joint. In intraobserver reliability, the hallux valgus angle showed the highest ICC value (0.989; 95% CI, 0.984–0.992) Conclusion: we suggest that the measurements of sesamoid subluxation in assessments of hallux valgus deformity may be helpful for operation and degree of metatarsophalangeal congruency.