Document Detail

Influence of index finger proximal interphalangeal joint arthrodesis on precision pinch kinematics.
MedLine Citation:
PMID:  22051227     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To evaluate the impact of proximal interphalangeal (PIP) joint arthrodesis on the kinematics of precision pinch.
METHODS: Eleven healthy subjects performed index finger-thumb pinch motions under 4 conditions: unrestricted thumb and index finger (CONTROL) and fusion of the PIP joint of the index finger in flexion of 30° (PIP30), 40° (PIP40), and 50° (PIP50). Fusion was simulated with metallic splints. Kinematics of the thumb and index finger were recorded with a motion capture system.
RESULTS: Proximal interphalangeal joint fusion at 30°, 40°, and 50° restricted maximal pinch span between the thumb tip and index finger tip by 6%, 10%, and 14%, respectively. At the time of pulp contact, PIP fusion led to an increase in index metacarpophalangeal joint flexion angle for the PIP30 condition and an increase in variability of thumb tip location for the PIP50 condition. Furthermore, the dynamic coordination between joint angles throughout the movement was affected by PIP fusion.
CONCLUSIONS: This study reports impairment in the kinematics of precision pinch associated with index finger PIP joint fusion. A PIP joint fusion at 40° to 50° leads to a more natural precision pinch posture, but it restricts the aperture and reduces pinch precision.
Mathieu Domalain; Peter J Evans; William H Seitz; Zong-Ming Li
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't     Date:  2011-11-03
Journal Detail:
Title:  The Journal of hand surgery     Volume:  36     ISSN:  1531-6564     ISO Abbreviation:  J Hand Surg Am     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-11-29     Completed Date:  2012-04-03     Revised Date:  2014-09-11    
Medline Journal Info:
Nlm Unique ID:  7609631     Medline TA:  J Hand Surg Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1944-9     Citation Subset:  IM    
Copyright Information:
Copyright © 2011 American Society for Surgery of the Hand. Published by Elsevier Inc. All rights reserved.
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MeSH Terms
Arthrodesis / methods*
Biomechanical Phenomena
Finger Joint / physiology*,  surgery*
Motor Skills / physiology*
Range of Motion, Articular / physiology*
Thumb / physiology*
Young Adult
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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