Functional Assessment in Hand with Flexor and Extensor Tendon Injuries

Abstract

Integrity of flexor and extensor tendons is a major prerequisite for dexterous hand function. While flexor tendons on the volar side of the forearm and hand flex the fingers for grasping, extensor tendons on the dorsum straighten the wrist and the fingers to release or reach the objects. Flexor tendons are classified into five zones, while extensor tendons are evaluated in seven zones. The primary aims of rehabilitation after tendon injury are to prevent adhesions and gain maximum tendon gliding, to ensure effective joint motion, and to restore hand function. It is also very important to prevent tendon rupture, contracture, and excessive scarring. In order to achieve these goals, various early active and passive mobilization methods for the first four postoperative weeks have been described. The efficacy of the postoperative rehabilitation is evaluated by validated and reliable methods that assess hand function and disability.