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The gliding characteristics of the flexor pollicis longus tendon in the carpal tunnel: Potential implications for manual pipette users
Author(s) -
Morizaki Yutaka,
Zhao Chunfeng,
van Doesburg Margriet H. M.,
Zhao Kristin,
An KaiNan,
Amadio Peter C.
Publication year - 2012
Publication title -
journal of orthopaedic research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.041
H-Index - 155
eISSN - 1554-527X
pISSN - 0736-0266
DOI - 10.1002/jor.21539
Subject(s) - pipette , carpal tunnel , carpal tunnel release , tendon , anatomy , thumb , medicine , carpal tunnel syndrome , wrist , surgery , chemistry
To understand the potential mechanism for hand and wrist complaints in pipette users, whose motion is characterized by repetitive thumb motion in certain wrist positions, the peak (PGR) and mean (MGR) gliding resistance of the flexor pollicis longus (FPL) tendon were measured in nine human cadaver wrists. The PGR with the wrist in 30° ulnar deviation and in the neutral position were significantly lower than the PGR with the wrist in 60° flexion. The MGR with the wrist in 30° ulnar deviation was significantly lower than the MGR with the wrist in 60° flexion, 60° extension, or 20° radial deviation with 40° extension. Based on these data, we believe that a manual pipette designed to be used in neutral to ulnar deviated wrist position could have ergonomic advantages. © 2011 Orthopaedic Research Society Published by Wiley Periodicals, Inc. J Orthop Res 30:457–460, 2012