Effect of wrist and interphalangeal thumb movement on zone T2 flexor pollicis longus tendon tension in a human cadaver model

Patricia O. Rappaport, Andrew R. Thoreson, Tai Hua Yang, Ramona L. Reisdorf, Stephen M. Rappaport, Kai Nan An, Peter C Amadio

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Introduction Therapy 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 study We measured FPL tendon tension in zone T2 to identify biomechanically appropriate exercises for mobilizing the FPL. Methods Eight human cadaver hands were studied to identify motions that generated enough force to achieve FPL movement without exceeding hypothetical suture strength. Results With 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. Discussion This work provides a biomechanical basis for safely and effectively mobilizing the zone T2 FPL tendon. Conclusion Our cadaver study suggests that it is safe and effective to perform early passive and active exercise to an isolated IP joint. Level of evidence NA.

Original languageEnglish (US)
Pages (from-to)347-355
Number of pages9
JournalJournal of Hand Therapy
Volume28
Issue number4
DOIs
StatePublished - Oct 1 2015

Fingerprint

Thumb
Wrist
Cadaver
Tendons
Carpometacarpal Joints
Metacarpophalangeal Joint
Sutures
Fingers
Hand
Joints
Therapeutics

Keywords

  • Biomechanics
  • Cadaver
  • Flexor pollicis longus
  • Hand therapy
  • Human
  • Thumb

ASJC Scopus subject areas

  • Rehabilitation
  • Physical Therapy, Sports Therapy and Rehabilitation

Cite this

Effect of wrist and interphalangeal thumb movement on zone T2 flexor pollicis longus tendon tension in a human cadaver model. / Rappaport, Patricia O.; Thoreson, Andrew R.; Yang, Tai Hua; Reisdorf, Ramona L.; Rappaport, Stephen M.; An, Kai Nan; Amadio, Peter C.

In: Journal of Hand Therapy, Vol. 28, No. 4, 01.10.2015, p. 347-355.

Research output: Contribution to journalArticle

Rappaport, Patricia O. ; Thoreson, Andrew R. ; Yang, Tai Hua ; Reisdorf, Ramona L. ; Rappaport, Stephen M. ; An, Kai Nan ; Amadio, Peter C. / Effect of wrist and interphalangeal thumb movement on zone T2 flexor pollicis longus tendon tension in a human cadaver model. In: Journal of Hand Therapy. 2015 ; Vol. 28, No. 4. pp. 347-355.
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