Endoscopic fasciotomy for chronic exertional compartment syndrome of the forearm: Clinical results of a new technique using an endoscopic carpal tunnel release device.

Exertional compartment syndrome of the forearm is a rare pathology, occurring almost exclusively in motorcycle racers. The results of endoscopic techniques are similar to those of open fasciotomies, but they are less invasive and leave smaller scars. The aim of our study was to present a new endoscopic technique for superficial fasciotomy using the Agee® system and to describe the results. This was a single-center, retrospective descriptive study of 21 patients (36 forearms) operated on between 2006 and 2016. All patients but one were competitive motorcycle racers. The mean operating time was 38.2min (standard deviation (SD), 10.5min). The QuickDASH score was 23.3±10.2% preoperatively versus 1±2% postoperatively (mean±SD). Among the 18 patients who came back for a follow-up visit after 4.9±2.7 years, 17 (94%) were satisfied or very satisfied. The mean time before returning to sport was 4.3 weeks (SD, 1.8 weeks), 9 patients (50%) at the same level as before surgery, 8 (44%) at a higher level, and one at a lower level. There were a few minor complications (superficial vascular lesions, hematoma, transitory hypoesthesia) and symptoms recurred in two patients. Our technique yields outcomes similar to those of other published endoscopic procedures and allows early return to sport. It has the advantage of being based on the Agee endoscope, which is commonly used to treat carpal tunnel syndrome, making the procedure easy to master.