Picture 1: Endoscopic release of the Flexor Hallucis Longus tendon.

Flexor hallucis longus (FHL) tenosynovitis is a well recognized cause of posteromedial ankle pain. In ballet dancers this entity has been described as ‘'dancer's tendinitis''. Athletes performing repetitive forceful pushoffs are at risk to develop flexor hallucis longus tendinopathy.

Conservative treatment is always the first treatment of choice. If it fails, surgical intervention involves tendon debridement and a release of the flexor retinaculum and tendon sheath at the level of the posterior talar process.

For the complete FHL release technique: CLICK HERE.