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Abstract
IntroductionTherapy after flexor pollicis longus (FPL) repair typically mimics finger flexor management, but this ignores anatomic and biomechanical features unique to the FPL. Purpose of the studyWe measured FPL tendon tension in zone T2 to identify biomechanically appropriate exercises for mobilizing the FPL. MethodsEight human cadaver hands were studied to identify motions that generated enough force to achieve FPL movement without exceeding hypothetical suture strength. ResultsWith the carpometacarpal and metacarpophalangeal joints blocked, appropriate forces were produced for both passive interphalangeal (IP) motion with 30° wrist extension and simulated active IP flexion from 0° to 35° with the wrist in the neutral position. DiscussionThis work provides a biomechanical basis for safely and effectively mobilizing the zone T2 FPL tendon. ConclusionOur cadaver study suggests that it is safe and effective to perform early passive and active exercise to an isolated IP joint. Level of evidenceNA.
Published Version
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