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Surgical Treatment for Stenosing Peroneal Tenosynovitis.
Foot & Ankle International 2019 March
BACKGROUND:: Stenosing peroneal tenosynovitis (SPT) is an uncommon entity that is equally difficult to diagnose. We evaluated our outcomes with a local anesthetic diagnostic injection followed by surgical release of the sheath and calcaneal exostectomy.
METHODS:: Eleven patients diagnosed with SPT underwent surgery between 2006 and 2014. Upon initial presentation, all patients reported a persistent history of pain along the ankle. Ultrasound-guided injections of anesthetics were administered into the peroneal tendon sheath to confirm the diagnosis. In patients with a confirmed diagnosis of SPT, we proceeded with surgical intervention with release of the peroneal tendon sheath and debridement of the calcaneal exostosis. Retrospective chart review was performed, and functional outcomes were assessed using the Foot and Ankle Outcome Score (FAOS). FAOS results were collected pre- and postoperatively and were successfully obtained at 1 year or greater.
RESULTS:: Of these patients, all showed significant improvements ( P < .05) in 4 of 5 categories of the FAOS (pain, daily activities, sports activities, and quality of life).
CONCLUSION:: We present a case series in which the peroneal tendon sheath was diagnostically injected with anesthetic to confirm a diagnosis of SPT. In each of these cases, symptomatic improvement was obtained following the injection. With the fact that many of these patients had advanced imaging denoting no significant tears, we believe that this diagnostic injection is paramount for the success of surgical outcome.
LEVEL OF EVIDENCE:: Level IV, retrospective case series.
METHODS:: Eleven patients diagnosed with SPT underwent surgery between 2006 and 2014. Upon initial presentation, all patients reported a persistent history of pain along the ankle. Ultrasound-guided injections of anesthetics were administered into the peroneal tendon sheath to confirm the diagnosis. In patients with a confirmed diagnosis of SPT, we proceeded with surgical intervention with release of the peroneal tendon sheath and debridement of the calcaneal exostosis. Retrospective chart review was performed, and functional outcomes were assessed using the Foot and Ankle Outcome Score (FAOS). FAOS results were collected pre- and postoperatively and were successfully obtained at 1 year or greater.
RESULTS:: Of these patients, all showed significant improvements ( P < .05) in 4 of 5 categories of the FAOS (pain, daily activities, sports activities, and quality of life).
CONCLUSION:: We present a case series in which the peroneal tendon sheath was diagnostically injected with anesthetic to confirm a diagnosis of SPT. In each of these cases, symptomatic improvement was obtained following the injection. With the fact that many of these patients had advanced imaging denoting no significant tears, we believe that this diagnostic injection is paramount for the success of surgical outcome.
LEVEL OF EVIDENCE:: Level IV, retrospective case series.
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