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Introduction: Compartment syndrome of the lower extremity following arterial vascular trauma can cause irreversible damage to muscle as well as nerve tissue leading to long-term functional impairment of the extremity or worse limb loss. Prompt diagnosis and treatment of compartment syndrome is mandatory to preserve muscle tissue and prevent limb loss. The aim of the study was to analyze the fasciotomy rate of our patient cohort and to perform a predictors analysis for the need of fasciotomy.Material and Methods: In a retrospective study all patients treated for arterial vascular trauma since 1990 were identified. Demographics, clinical data and outcome were analysed. After separation in a fasciotomy and non-fasciotomy group, a Bayes Network was used to arrive at a predictor ranking for the need of fasciotomy via a gain ratio feature evaluation.Results: In the period of 28 years, 88 (73.9%) of a total of 119 patients, predominantly male (80.7%) and aged under 40 years (37.5 ± 17.5), required fasciotomy after arterial vascular trauma. Patients of the fasciotomy group presented at higher Rutherford categories (grade III 34.1% vs. 9.7%, p = 0.005), varied in terms of the type of arterial vascular injury (dissection 25% vs. 61.3%, p <0.001, occlusion 15.9% vs. 0%, p = 0.011) and showed prolonged hospitalization (35.17 ± 29.3 vs. 21.48±25.4, p = 0.002). Ischaemia duration exceeding 2.5 h followed by the Rutherford grade IIa and greater, the site (popliteal artery segment 3), type (transection and occlusion), and mechanism of vascular trauma (work related accident over traffic and sports accidents), as well as the male gender presented as strong predictors for fasciotomy.Conclusions: Arterial vascular trauma requiring fasciotomy for compartment syndrome accounted for 73.9% of all cases. Immediate diagnosis and treatment is mandatory to prevent long-term functional impairment or limb loss. The above mentioned predictors should help identifying patients at risk for developing a compartment syndrome to provide best possible treatment. [ABSTRACT FROM AUTHOR] more...

Objective: Patient compliance with weight bearing and physical therapy recommendations is critical following an orthopedic injury. Proper compliance requires knowledge of the postinjury plan, but there is little published data regarding comprehension of postinjury recommendations among orthopedic trauma patients. We hypothesized that patient knowledge of weight bearing and physical therapy instructions following an orthopaedic injury would be poor.Design: Prospective Observational Cohort SETTING: Level I Trauma Center PATIENTS: 194 prospectively enrolled patients completed a questionnaire testing their knowledge of their weight bearing status and physical therapy plan at their first clinic visit following an inpatient admission with an orthopedic injury RESULTS: Despite the fact that 73% of patients were participating in physical therapy following hospital discharge, only 66% (95% CI 60-73%) of patients correctly identified their postinjury weight bearing status. A multivariate analysis found no significant correlation between chance of knowing postoperative weightbearing status or physical therapy plan and any of the socioeconomic patient factors we collected.Conclusions: Orthopedic trauma patients had a relatively poor understanding of even basic postinjury physical therapy instructions. This did not appear to be affected by age, gender, or socioeconomic factors. Orthopedic trauma surgeons should be aware of the significant potential for knowledge deficits among their patients and should make specific efforts to identify and correct those deficits. [ABSTRACT FROM AUTHOR] more...

Background: Grade III open fractures of the lower extremity are serious injuries and are difficult to reconstruct. The optimal treatment for such injuries is unclear. We aimed to determine the safety and efficacy of orthoplastic reconstruction, using a primary free anterolateral thigh flap combined with the Masquelet technique and internal fixation for Gustilo grade IIIB/C open tibial fractures.Methods: From April 2018 to April 2019, 15 patients, ranging from 19 to 72 years old, with Gustilo grade IIIB/C open fractures were treated using a primary free anterolateral thigh flap combined with the Masquelet technique and internal fixation. This involved wound debridement and removal of free bone fragments, followed by bone cement packing of the defect, external fixation, and vacuum sealing drainage treatment. The final stage involved switching from external to internal fixation and wound repair using a free anterolateral thigh flap. Repair time ranged from 2 to 7 days. Flap size ranged from 25 × 15 cm2 to 13 × 7cm2. Hospital stay ranged from 11 to 50 days (mean, approximately 33.3 days). Bone cement was removed after 6-19 weeks and replaced with autogenic cancellous bone.Results: All flaps survived without incident. One patient experienced a wound infection, but there were no deep infections. For all patients, bone union was achieved after 4 to 7 months.Conclusion: The use of a primary free anterolateral thigh flap combined with the Masquelet technique and internal fixation is a safe and effective procedure for reconstruction of Gustilo grade IIIB/C open fractures. [ABSTRACT FROM AUTHOR] more...

Background: The medial sural artery perforator (MSAP) flap provides a thin, pliable and durable soft tissue reconstruction with adequate pedicle length and low donor morbidity. It is an ideal choice for small-to-moderate defects of the lower extremity, although it does have limitations. We report our experience of the flap in a three-pronged anatomical, clinical and patient reported outcome-based study.Methods: Cadaveric fresh frozen lower limbs (n = 10) were used for anatomical dissections to assess pertinent and clinically relevant findings. Data relating to MSAP flaps was collected from a prospectively maintained database over a 2-year period. Both clinical data and modified Enneking scores were analysed.Results: Anatomical study: A mean of 2.1 ± 0.99 perforators arose from the medial sural artery, located 11.9 cm ± 2.07 along the line between the popliteal fossa and medial malleolus. The largest perforator was located 13.58 cm ± 2.01 from the popliteal artery. The distance from the dominant perforator to the first branching point within the gastrocnemius was 7.39 ± 1.50 (range 5-9.2 cm). The short saphenous vein was located on average 3.08 cm ± 0.77 from the dominant perforator. Clinical study: Twenty free and nine pedicled MSAPs were included (n = 29). Open lower limb fractures (n = 18, 62%) and infection (n = 10, 35%) were the most common aetiologies. Defects sites included: foot-and-ankle (n = 12, 55%), knee (n = 9, 31%) and anterior leg (n = 4, 14%). Four patients (14%) required SSG to for donor site coverage. Venous congestion was responsible for partial flap necrosis in 6.9%(n = 2) of patients. All wounds were healed at discharge. At 14 months, the mean Enneking score was 72.5%. All patients were ambulant, 96% returned to work and 87% were using pre-operative footwear.Conclusions: The MSAP provides robust foot-and-ankle reconstruction, whilst permitting glide when over the knee. Patient satisfaction and functional outcomes are excellent with careful patient selection. Care should be taken to avoid compression or kinking of the large, thin walled veins as the most commonly observed complication was venous congestion. We advocate MSAP as a first choice flap for small-to-moderate foot, ankle or knee defects. [ABSTRACT FROM AUTHOR] more...

• Time to brake was prolonged and functional outcome measurements denoted dysfunction among patients released to full weightbearing and driving following lower extremity injury. • When MFA scores worsened by one point, time to brake increased. • When PROMIS pain interference scores worsened by one point, time to brake increased. • When PROMIS mobility scores worsened by one point, time to brake increased. Inability to drive a motor vehicle due to lower extremity injury is a major inconvenience. Timing of safe return to driving has not been much studied. Objective measurements such as time to brake (TTB) have been proposed; however, utility and concordance of functional outcome measurements have not been previously evaluated. The purpose of this project is to measure these parameters and to assess for associations with ability to safely return to driving, improving the ability of clinicians to assess for measurements of driving readiness without specifically measuring TTB. A prospective, cohort study of 232 patients with complex lower extremity injuries to the pelvis, acetabulum, hip, femur, knee, tibia, ankle, and foot was performed. Time to brake (TTB) was measured once weightbearing was allowed. Function was assessed by the Musculoskeletal Function Assessment (MFA) questionnaire, and pain, mobility, and physical functions, via patient reported outcome measurement information system (PROMIS) surveys. Patients with longer TTB had significantly elevated MFA scores indicating increased musculoskeletal dysfunction post-injury. As the MFA score increased by 1 point, TTB increased by 0.013 s (p <0.001). PROMIS metrics were also significantly associated with patients experiencing more pain and worse mobility as TTB increased. Many patients continue to exhibit musculoskeletal dysfunction several months post-treatment for complex lower extremity injuries. Patients with better PROMIS metrics and MFA scores, and shorter TTB are more appropriate to return to driving. Surgeons may be better informed about safe driving ability by considering these measurements. II [ABSTRACT FROM AUTHOR] more...

Introduction: Compression ultrasound is a non-invasive technique allowing for qualitative visualization and quantitative measurements of mechanical tissue properties. In acute compartment syndrome (ACS), cadaver studies have proven that the intra-compartmental pressure (ICP) measured by compression sonography correlates with the ICP measured invasively. This study aimed to evaluate compression sonography for compartment pressure measurements in an animal model.Material and Methods: The pressure in the anterior tibial compartment of 6 domestic pig legs was increased from baseline to 40mmHg in 5mmHg steps. Using compression sonography, the compartment diameter was measured without external pressure and during manual application of five levels of external pressure. The elasticity ratio (ER) was computed as the ratio of the compartment diameter with and without external pressure. At 40mmHg of external pressure the ERs at different ICP levels were compared using repeated ANOVA measurements. Post-hoc comparisons evaluated the lowest detectable ICP fulfilling the definition of ACS (ICP≥30mmHg) by starting from each pressure below 30mmHg (baseline, 20mmHg and 25mmHg, respectively). Receiver operator characteristic analyses defined ER limits with appropriate sensitivity and specificity to detect ACS.Results: The ER increased from 79.0% at baseline ICP to 89.3% at 40mmHg ICP. The ER at baseline and at 20mmHg ICP significantly differed from the ER at 30mmHg ICP (p=0.007 and 0.002, respectively); the ER at 25mmHg ICP significantly differed from the ER at 40mmHg ICP (p=0.001). An ER less than 87.1% had a sensitivity of 94.4% and a specificity of 88.9% to proper diagnosis of ACS.Conclusion: Compression sonography might offer a non-invasive technique to guide treatment in cases of uncertain acute compartment syndrome. Further studies are needed to collect elasticity ratio data in humans and to clinically validate compression sonography for compartment pressure measurements. [ABSTRACT FROM AUTHOR] more...

Introduction: Isolated fractures of the lower extremity are relatively common injuries while multifocal injuries resulting from high-energy trauma are less frequently encountered. Our objectives are to characterise patients who sustained multiple noncontiguous fractures and open fractures of the lower extremity, report the incidence of major complications, and identify factors that may contribute to complications and unplanned re-operations.Patients and Methods: A retrospective review of patients was performed at a Level 1 trauma centre from 2000 to 2013. Patients who sustained two or more noncontiguous operative fractures in an ipsilateral lower extremity, with at least one open fracture were included. Noncontiguous was defined as fractures in the same lower limb that were not in continuity on preoperative radiographs or intra-operatively. Demographic, injury characteristics, and hospitalisation data were collected. Primary outcomes included non-union, deep infection, and the need for unplanned surgeries.Results: 257 patients sustained a total of 876 lower extremity fractures with an average of 1.7 open and 2.7 operative fractures in the qualifying limb. Ninety-nine patients (38.5%) sustained bilateral lower extremity injuries. Following their initial stay, 22.6% of patients had planned procedures (definitive fixation, skin, or planned bone grafting). Nearly half (45.9%) required one or more unplanned re-operation. Complications included deep infections (19.5%), non-unions (19.5%), and mal-unions (2.7%). 17.5% of the patients had at least one procedure for removal of painful implants. A deep infection was predictive of having a non-union (odds ratio, OR 7.5). The presence of a Gustilo-type IIIB/IIIC (OR 24.6/16.0) fracture was predictive of having a deep infection. After excluding painful implant removal, a type IIIB fracture was associated with an unplanned procedure (OR 13.8).Conclusions: Patients with multiple non-contiguous lower extremity injuries associated with open fractures can expect complications including non-unions, deep infections, and painful implants. Nearly half of the patients will need further operative treatment. [ABSTRACT FROM AUTHOR] more...