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Background: The effect of obliquity of tendon laceration on repair strength is not well studied. The overwhelming majority of biomechanical studies assess repair strength following a laceration that is perpendicular to the long axis of the tendon. The aim of this study was to investigate whether the angle of tendon laceration affects the core suture strength. Methods: In all, 110 fresh human cadaveric flexor tendons were cut at varying angles of 15°, 30°, 45°, and 60° and the control group at 90°. All tendons were repaired with 6-strand modified Tang technique. The repair strength was tested using a custom-made tensioning machine, and the initial static gap force and the ultimate breaking force were measured. Results: The mean gap force and 95% confidence interval (CI) for the 15°, 30°, 45°, 60°, and 90° groups were 15.2 N (11.4-19.0 N), 15.8 N (13.6-18.1 N), 15.6 N (13.1-18.4 N), 16.6 N (13.7-19.5 N), and 22.3 N (16.6-27.9 N), respectively. In the same respective order, the break force and 95% CI were 25.9 N (21.9-29.8 N), 26.5 N (23.2-29.7 N), 31.1 N (26.1-36.1 N), 35.6 N (28.2-43.1 N), and 51.8 N (62.5-41.0), respectively. The Fisher least significant difference demonstrated significant differences between the control group and all experimental groups for both gap force and break force. Conclusions: Obliquity of tendon laceration affects the core suture strength when compared with a transverse cut. Flexor tendons cut at 90° demonstrated a higher overall gap force and breaking strength that were statistically significant when compared with all obliquely cut groups. These findings should be considered when repairing and starting postoperative therapy for obliquely cut tendons. [ABSTRACT FROM AUTHOR]

Puffy Hand Syndrome is a complication of intravenous (IV) drug abuse that causes swelling and edema in the hands. It was first described in prisoners in New York in 1965 and can affect up to 16% of IV drug users. The syndrome is characterized by non-pitting or minimally pitting edema, affecting the dorsal surface of the fingers and hands, and can progress to permanent swelling. The exact cause is not fully understood, but it is believed to be due to the sclerosing of the superficial venous system and lymphatics from IV injections of irritants commonly found in street drugs. There are currently no known medical or surgical treatments to reverse the swelling, and management focuses on symptomatic relief through elevation and compression. [Extracted from the article]

Proper injection of the posterior interosseous nerve (PIN) is important for both the therapeutic and diagnostic management of wrist pain. However, no anatomical study exists describing the site of injection based on individual wrist width. We sought to develop a reproducible anthropometric ratio utilizing external wrist surface anatomy to predict a safe and accurate injection site for the PIN. Fresh frozen cadaver forearms were dissected at the University of Louisville tissue lab. Several anthropometric measurements were obtained in order to develop a reproducible ratio to calculate location of injection. A total of 16 cadaver forearms of equal male to female ratio were obtained. On average, the male forearm had a greater mean wrist circumference obtained at the level of Lister's tubercle compared to female forearms, 17.1 cm vs. 13.5 cm. An injection given ulnar to proximal edge of Lister's tubercle at a length of one-fourth the distance between Lister's tubercle and radial aspect of ulnar styloid resulted in 100% accurate perineural injection without intraneural injection. An anthropometric ratio of one-fourth the distance from Lister's tubercle to the ulnar styloid was able to predict accurate injection sites for the distal PIN in cadaveric specimens of varying anatomical proportions. [ABSTRACT FROM AUTHOR]

Objective: Lateral breast defects of various causes can be reconstructed with random patterned local flaps utilizing oncoplastic techniques. These local flaps are used frequently in other areas but are infrequent in breast reconstruction despite affording excellent utility in small lateral defects.We sought to demonstrate this with a case series involving 5 patients who underwent oncoplastic breast surgery with random patterned flap reconstruction. Methods: From 2016 to 2017, 3 different varieties of random flaps were used in 5 women requiring lateral breast defect reconstruction secondary to resection of localized cancer or cutaneous lesion. The local flaps included a rhomboid flap, the bilobed flap, and a rotational flap. Patients were then evaluated in the clinic 10 to 12 months postoperatively for complications, symmetry, and satisfaction of reconstruction. Results: In 4 of 5 patients, the local flap remained fully viable and therewas no incidence of seroma, infection, or further complications. One patient developed a post-operative hematoma requiring evacuation and a second patient experienced distal flap necrosis and delayed wound healing. Patients reported satisfaction with the reconstruction. Conclusions: Several random patterned local flaps exist for a variety of breast defects. They can yield excellent cosmetic results, high patient satisfaction, and bolster a low rate of complications. Our case series emphasizes the utility of random patterned flaps for lateral breast oncoplastic reconstruction. [ABSTRACT FROM AUTHOR]

Objective: Management of calcaneal wounds is challenging due to a paucity of tissue, complex local anatomy, and limited vascularity. These wounds are commonly associated with lower extremity fractures, which are often treated with external fixation. Free tissue transfers are frequently employed as a means for closure of plantar heel wounds; however, postoperative management can be challenging due to their dependent location. We sought to describe how simple modification of the external fixator can help relieve direct pressure, provide joint immobilization, and optimize accessibility necessary for flap survival. Methods: Three patients requiring autologous free tissue reconstruction of hindfoot defects were immobilized using an external fixator with a “kickstand” modification. Viability of the transferred tissue and the postoperative outcomes were assessed. Results: All free flaps survived with no associated complications. The “kickstand” modification was well tolerated with minimal discomfort. All 3 patients expressed satisfaction with early return to ambulation. Conclusion: An external fixator with a “kickstand” modification provides an essential function in maintaining the viability of the transferred tissue to plantar calcaneal wounds. [ABSTRACT FROM AUTHOR]

Purpose: Breast augmentation is the most commonly performed aesthetic operation in the Unites States annually. With the increasing popularity of gel implants, optimal incisional length for specific implant volumes becomes a factor to consider. Our study is the first, to date, to measure optimal incisional length for increasing Mentor smooth, round, moderate plus silicone implant volumes. Method: Three cadaver breasts were dissected in our anatomy laboratory. After dissection of a subpectoral pocket via an inframammary fold incision, time of implant insertion was measured for increasing volumes with the use of increasing incisional site lengths. Results: Values for increased incisions are as follows: 2.5-cm incision facilitated 100-cm3 implant (average time [AvgT] 76 seconds); 3-cm incision 100-cm3 implant (AvgT 32 seconds), 200 cm3 (AvgT 84.33 seconds); 3.5-cm incision 100-cm3 implant (AvgT 13.00 seconds), 200 cm3 (AvgT 22.00 seconds), 300 cm3 (AvgT 33.67 seconds); 4-cm incision 100-cm3 implant (AvgT 5.67 seconds), 200 cm3 (AvgT 11.33 seconds), 300 cm3 (AvgT 21.33 seconds), 400 cm3 (AvgT 26 seconds); 4.5-cm incision 100-cm3 implant (AvgT 5 seconds), 200 cm3 (AvgT 15.17 seconds), 300 cm3 (AvgT 19.67 seconds), 400 cm3 (AvgT 26 seconds), 500 cm3 (AvgT 39.67 seconds), 600 cm3 (AvgT 59.33 seconds), 700 cm3 (AvgT 78.67 seconds); 5-cm incision 100-cm3 implant (AvgT 1 second), 200 cm3 (AvgT 3.67 seconds), 300 cm3 (AvgT 8 seconds), 400 cm3 (AvgT 13 seconds), 500 cm3 (AvgT 19.33 seconds), 600 cm3 (AvgT 23.33 seconds), 700 cm3 (AvgT 28 seconds), 800 cm3 (AvgT 33 seconds). Conclusion: Based on our results, the optimal incision size for increasing Mentor smooth, round, moderate plus volumes is as follows: 2.5 cm for 100-cm3 implant, 3 cm for 200-cm3 implant, 3.5 cm for 300-cm3 implant, 4 cm for 400-cm3 implant, 4.5 cmfor 500- to 700-cm3 implant, and 5 cm for 800-cm3 implant. This guideline can be used to provide the most aesthetic results without tissue compromise. [ABSTRACT FROM AUTHOR]

This article discusses a case of a 23-year-old man who presented with a firework-related injury to his face. The firework became lodged in his left jaw, and the bomb squad was called to safely remove the explosive. The patient underwent surgery to repair the facial fractures and restore function and aesthetics. The article also provides information on the epidemiology of firework-related injuries, the important considerations for managing facial injuries, and the potential causes of early and long-term morbidity following facial reconstruction. The case highlights the complex management required for facial injuries caused by fireworks and emphasizes the need for multidisciplinary care. [Extracted from the article]

Background. In 2020, reduction mammoplasties and mastopexies comprised 34.2% of all breast surgeries performed by plastic surgeons. Various approaches for the skin incision of these procedures have been described. The vertical pattern has become an increasingly popular option due to its lower scar burden. However, it is prone to dog-ear formation along the caudal aspect of the incision. Herein, we describe 5 technical steps to eliminate the dog-ear in patients undergoing vertical mammoplasties. Methods. A retrospective chart review was performed on all patients who underwent vertical breast reduction and mastopexy between the years 2008 and 2020 performed by the senior author. The 5 steps employed in eliminating the dog-ear are delineated and depicted pictorially. Results. A total of 58 patients and 89 breasts were operated upon. A majority of 66.6% were Caucasian, 33.3% were African American, and 1 patient was of Hispanic descent. The mean age was 53.2 years (19-73 years), and average BMI was 31.5 kg/m² (21.3-42.7 kg/m²). The average resection weights for reduction and mastopexy patients were 479 grams (100-1500 grams) and 58.1 grams (18-100 grams), respectively. Mean follow-up was 10.5 months (1-35 months). Only one patient developed a dog-ear (1.7%) in bilateral breasts (2.2%); however, the patient did not request a revision. Our revision rate over 13 years remained at 0%. Conclusions. Utilizing these 5 technical steps reduces the risk of dog-ear deformity and thereby diminishes the overall need for revisional surgery in patients undergoing short scar vertical mammoplasties. [ABSTRACT FROM AUTHOR]

Objective: Use of local anesthesia in awake patients undergoing hand surgery has become increasingly popular. A thorough understanding of local anatomy, such as the distal wrist for ulnar nerve block, is required to provide safe blockade. We sought to conduct an anatomic study of the distal wrist and review cadaveric studies describing various techniques for ulnar nerve block. Methods: Dissection of fresh-frozen cadaver forearms at the University of Louisville Robert Acland Fresh Tissue Lab assessing relationships between the flexor carpi ulnaris tendon and the ulnar nerve and the ulnar artery was performed. Three cadaveric studies on ulnar nerve blockade using the ulnar, volar, and/or transtendinous technique were identified and reviewed. Results: A total of 16 cadaver forearms of equal male to female ratio were obtained. The ulnar nerve was noted to be directly posterior to the flexor carpi ulnaris tendon in 15 (93.8%) forearms, with 1 (6.3%) specimen having the nerve extend along the ulnar border of the flexor carpi ulnaris. The ulnar artery was radial to the ulnar nerve 1 cm proximal to the pisiform in all specimens. In all 3 cadaveric studies, only the ulnar technique was associated with no ulnar artery and/or ulnar nerve injury. Conclusion: Knowledge of distal wrist anatomy can help minimize risk of iatrogenic injury during local blockade. On review, the ulnar approach provides the safest method for ulnar nerve block. [ABSTRACT FROM AUTHOR]