Document Detail

An analysis of symmetry of torque strength of the forearm under resisted forearm rotation in normal subjects.
MedLine Citation:
PMID:  16713846     Owner:  NLM     Status:  MEDLINE    
PURPOSE: To establish normative pronation and supination torque values in right-handed adults without evidence of upper-extremity dysfunction or impairment in the forearm positions of neutral, pronation, and supination. METHODS: Fifty-one normal right-handed participants ages 22 to 45 years were enrolled and tested in this study using a custom device that incorporated a torque cell and a grip system that produced a digital recording of the peak torque during maximal resisted pronation and supination in positions of neutral forearm rotation, 60 degrees pronation, and 60 degrees supination. RESULTS: The greatest peak torque strength for both male and female participants was found during resisted pronation in the supinated position. The peak torque values averaged 11.9 +/- 3.7 N.m on the right side and 10.4 +/- 3.3 N.m on the left side for men, and 6.0 +/- 1.4 N.m on the right side and 5.0 +/- 1.2 N.m on the left side for women. The weakest torque strengths were resisted pronation in the pronated position and resisted supination in the supinated position. CONCLUSIONS: Torque strength measurements are reliable and should be collected when treating patients with forearm dysfunction. Maximal torque follows the same pattern related to hand dominance as grip strength. Men generate average torque strengths that are approximately twice the magnitude of those generated by women.
Juli Matsuoka; Richard A Berger; Lawrence J Berglund; Kai-Nan An
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  The Journal of hand surgery     Volume:  31     ISSN:  0363-5023     ISO Abbreviation:  J Hand Surg Am     Publication Date:    2006 May-Jun
Date Detail:
Created Date:  2006-05-22     Completed Date:  2006-10-31     Revised Date:  2009-06-08    
Medline Journal Info:
Nlm Unique ID:  7609631     Medline TA:  J Hand Surg Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  801-5     Citation Subset:  IM    
Biomechanics Laboratory, Division of Orthopedic Research, Mayo Clinic College of Medicine, Rochester, MN 55905, USA.
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MeSH Terms
Forearm / physiology*
Hand Strength / physiology*
Middle Aged
Pronation / physiology*
Range of Motion, Articular
Supination / physiology*

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