Flexor Hallucis Longus Tendinopathy: Great Toe Loading, Ballet Mechanics, and Targeted Rehabilitation

Flexor Hallucis Longus Anatomy and First MTP Joint Kinematics

The flexor hallucis longus originates from the posterior fibula, navigating through the fibro-osseous tunnel behind the medial malleolus and beneath the sustentaculum tali before inserting at the distal phalanx of the great toe.

Mechanisms of Stenosing Tenosynovitis in Forefoot Loading

Repetitive forceful plantarflexion and en pointe posturing subject the FHL tendon to severe compressive and shearing friction within the retromalleolar groove, leading to chronic nodular thickening and pseudotriggering.

Progressive Loading, Sesamoid Mobilization, and Footwear Modification

Non-operative therapy centers on first ray mobilization, eccentric hallux flexion, and customized orthotics with first metatarsal cutouts or stiffened rocker soles to minimize terminal extension stresses.

Clinical Precautions and When to Seek Medical Evaluation

Persistent posterior medial ankle clicking, hallucis triggering, or sensory changes along the medial plantar nerve require orthopaedic foot and ankle evaluation with dynamic ultrasound imaging.

Sources

1. Forefoot rocker footwear mechanics and great toe joint offloading during walking gait
2. Flexor hallucis longus tendinopathy in athletes: anatomy, biomechanics, and conservative management