Document Detail

Biomechanical analysis of capitate shortening with capitate hamate fusion in the treatment of Kienböck's disease.
MedLine Citation:
PMID:  9620179     Owner:  NLM     Status:  MEDLINE    
The biomechanical effects of surgical treatment options for Kienböck's disease have been compared. However, no study has included a direct analysis of capitate shortening along with capitate-hamate fusion (CSCHF). To investigate the biomechanical effects of CSCHF, a cadaver model of the upper extremity was used to determine radiocarpal articular pressure changes resulting from this procedure using pressure-sensitive film. Ten specimens were tested by placing each in an apparatus that applied load across the radiocarpal joint through the wrist flexor and extensor tendons. Testing was performed in 3 wrist positions (ulnar deviation, radial deviation, and neutral) combined with 3 forearm positions (pronation, supination, and neutral) and neutral flexion/extension. Radioscaphoid, radiolunate, and mean contact pressures in the entire radiocarpal joint were determined for each of the 9 wrist positions, both intact and after surgery. The radioscaphoid mean pressure increased in 6 of 9 positions and was unchanged in 3 positions. The radiolunate mean pressure decreased in 9 of 9 positions. The radiocarpal mean pressure increased in 2 of 9 positions and was unchanged in 7 positions. These data suggests that CSCHF increases radioscaphoid mean pressure, decreases radiolunate mean pressure, and has little effect on radiocarpal mean pressure.
R W Viola; P K Kiser; A W Bach; D P Hanel; A F Tencer
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of hand surgery     Volume:  23     ISSN:  0363-5023     ISO Abbreviation:  J Hand Surg Am     Publication Date:  1998 May 
Date Detail:
Created Date:  1998-07-23     Completed Date:  1998-07-23     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:  395-401     Citation Subset:  IM    
Department of Orthopaedic Surgery, Harborview Biomechanics Laboratory, The University of Washington, Seattle, USA.
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MeSH Terms
Carpal Bones / surgery*
Osteochondritis / physiopathology,  surgery*

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

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