Influence of Wrist Position on the Metacarpophalangeal Joint Motion of the Index Through Small Finger

Hand : Official Journal of the American Association for Hand Surgery
David LatzSebastian Viktor Gehrmann

Abstract

The metacarpophalangeal joints exhibit range of motion that is influenced by wrist position. Synergistic motion occurs between the wrist and the metacarpophalangeal joints with different static wrist positions affecting joints' motion capability. The aim of this study was to determine how different wrist positions influence the active range of motion of the index through small finger metacarpophalangeal joints. The active range of motion of the index through small finger metacarpophalangeal joints of 31 healthy subjects was measured in flexion/extension and radial/ulnar deviation in 5 different flexion/extension wrist positions, using biaxial electrogoniometers. There was a difference in range of motion of all fingers depending on the wrist position. The minimum metacarpophalangeal joint range of motion was found in 80° wrist extension, the maximum in neutral wrist position. For the index finger, flexion/extension was 84.7° (±8.6°) to 25.9° (±10.2°) and radial/ulnar deviation was 32.1° (±11.3°) to 22.6° (±12.8°). For the middle finger, flexion/extension was 84.8° (±8.5°) to 25.9° (±10.1°) and radial/ulnar deviation 28.8° (±11.1°) to 22.1° (±8.9). The fourth finger showed a range of motion for flexion/extension of 87.2° (±11.5°)...Continue Reading

References

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Mar 1, 1984·The Journal of Hand Surgery·V R HentzP Dev
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Oct 22, 2008·The Journal of Hand Surgery·Sebastian V GehrmannZong-Ming Li
Feb 1, 2011·The Journal of Hand Surgery·Marco Rizzo

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