医原性脛骨神経踵骨枝断裂に対し，人工神経による神経再生誘導術が有用であった1例

抄録

　We report a case of iatrogenic medial calcaneal nerve injury caused by ankle arthroscopy that was repaired using a collagen nerve conduit. The patient was a 16-year-old female who had trained abroad to become a ballerina. She previously underwent two arthroscopic surgeries on her left ankle. She presented to our hospital with progressive pain in the left heel, accompanied by localized point tenderness at the scar posterior to the medial malleolus, with an overlying radiating Tinel’s sign. Exploration of the left medial calcaneal nerve revealed complete division and a neuroma involving the proximal stump. After neurolysis and neuroma excision, the medial calcaneal nerve was reconstructed using a collagen nerve conduit. Nine months post-surgery, the pain disappeared, and she successfully returned to ballet. The collagen nerve conduit is an effective option to recover acceptable sensation and nerve function after sensory peripheral nerve injury in the lower extremity.