Biomechanical Cadaveric Analysis of Biotenodesis Screw Versus Bone Tunnel Fixation Methods in Flexor Hallucis Longus Transfers

The Achilles tendon is the largest tendon in the human body. It connects the gastrosoleus complex to the calcaneus bone in the foot. It thus allows for transfer of force and heel elevation during forward propulsion of the foot in gait. It is also one the most commonly injured tendons. (1). Acute repair or acute intervention for non-operatively treated tendons do well to restore function. However, chronic Achilles tendon ruptures often require tendon transfer rather than attempt at primary repair. The treatment considered the gold standard is the transfer of the flexor hallucis longus (FHL) tendon to the Achilles insertion of the calcaneus (2).