Arthroscopic Management of Posteromedial Ankle Impingement.

Posteromedial ankle impingement is a rare clinical entity. It usually follows an inversion injury, with compression of the posterior tibiotalar ligament between the medial malleolus and talus. This can be treated by posterior ankle endoscopy through the posteromedial and posterolateral portals. The flexor hallucis longus tendon can be examined for any tenosynovitis or tendinopathy. The posteromedial corner of the ankle joint is reached with the instruments staying on the lateral side of the flexor hallucis longus tendon. The inflamed synovium, scar tissue, and fibrillated cartilage are debrided.