e-journal
Endoscopic tarsal tunnel syndrome surgery using the Universal Subcutaneous Endoscope system
Background/objective: Tarsal tunnel syndrome is a relatively rare entrapment neuropathy with the lateral and medial plantar nerves entrapped inside of the tarsal tunnel. When conservative treatment fails, standard open decompression of the nerve can be achieved by releasing the flexor retinaculum of the foot through a several-centimetre-long skin incision made along the tarsal tunnel. By contrast, we made a 1-cm portal incision at the proximal part of the medial ankle, and endoscopic tarsal tunnel release of the flexor retinaculum of the foot and part of the abductor
hallucis muscle was achieved using the Universal Subcutaneous Endoscope (USE) system.
Methods: Our procedure was performed under local anaesthesia without a pneumatic tourniquet on an outpatient basis. The USE system was inserted into the tarsal tunnel at the proximal part of the medial ankle; the nerves, vessels, flexor retinaculum, tendons of the foot, and the abductor hallucis muscle were then endoscopically identified. Decompression of the lateral and medial plantar nerves entrapped inside of the tarsal tunnel was then achieved by releasing the flexor retinaculum of the foot and part of the abductor hallucis muscle with a push knife under
complete endoscopic observation.
Results: Results from eight feet of five patients were compiled and analyzed. All showed improved clinical signs compared with their preoperative condition.
Conclusion: Our less invasive endoscopic management for tarsal tunnel syndrome using the USE system produces sufficient results.
Keywords: endoscopic neurolysis; endoscopic surgery; entrapment neuropathy; peripheral nerve; tarsal tunnel syndrome
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