Predictors of Improvement After Fasciotomy for Treatment of Chronic Exertional Compartment Syndrome of the Lower Extremity.

Abstract

Previous studies have demonstrated the effectiveness of lower extremity fasciotomies in treating chronic exertional compartment syndrome (CECS). However, not all patients have demonstrated the same level of symptom improvement. Specific patient variables will lead to enhanced functional improvement after fasciotomy for CECS of the lower extremity. Case series. Level 4. A review of patients undergoing fasciotomy of the lower extremity for treatment of CECS by a single surgeon from 2009 to 2017 was performed. Pre- and postoperative measures of Foot and Ankle Ability Measure-Sports subscale (FAAM-Sports), FAAM-Sports Single Assessment Numeric Evaluation (SANE), and visual analog scale (VAS) for pain during sporting activities were collected at a minimum of 12 months postoperatively. The primary outcomes of change in FAAM-Sports, FAAM-Sports SANE, and VAS during sporting activities were calculated by taking the difference of post- and preoperative scores. Generalized multiple linear regression analyses was performed to determine independent predictors of functional and pain improvement. A total of 61 patients (58% response rate) who underwent 65 procedures were included in this study, with postoperative outcome measures obtained at mean duration of 57.9 months (range, 12-115 months) after surgery. Patients had a mean ± SD improvement in FAAM-Sports of 40.4 ± 22.3 points (P < 0.001), improvement in FAAM-Sports SANE of 57.3 ± 31.6 points (P < 0.001), and reduction of VAS pain of 56.4 ± 31.8 points (P < 0.001). Multiple linear regression analysis revealed deep posterior compartment involvement, younger age, a history of depression, and male sex to be significant independent predictors of enhanced improvement after fasciotomy. Fasciotomy is an effective treatment of CECS, with our study identifying certain patient variables leading to greater functional improvement. Male patients, younger patients, patients with depression, and patients with deep posterior compartment involvement may serve to benefit more with fasciotomies for treatment of CECS.