Operative technique: The use of a flexor retinacular flap to cover an osteophytic hook of hamate post repair of a chronic rupture of the flexor digitorum profundus tendon of the little finger.

The Use of a Flexor Retinacular Flap to Cover an Osteophytic Hook of Hamate Post repair of a Chronic Rupture of The Flexor Digitorum Profundus Tendon of The Little Finger Closed ruptures of the Flexor Digitorum Profundus (FDP) tendon associated with hook of hamate pathology are rare but have previously been described in the literature. It is mostly associated with fracture non-union of the Hook of Hamate resulting in roughened bone surfaces which over time can erode the flexor tendons. The preferred treatment for a spontaneous flexor tendon rupture in the hand is interposition tendon grafting. Most commonly a resection of the Hook of Hamate is performed however occasionally sharp, or roughened bone surfaces can persist. In our recent case of a closed FDP repair of the little finger we used a flexor retinacular flap to cover the roughened edge of the bone post resection of the Hook of Hamate to create a smooth surface for our tendon repair to glide. This flap should be considered as a beneficial technique in all cases requiring resection of arthritic bone within the carpal tunnel.