| Histopathology of the palmar beak ligament in trapeziometacarpal osteoarthritis. | |
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MedLine Citation:
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PMID: 10357527 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Eighteen cadaver hands were studied to investigate the relationship between degeneration of the palmar beak ligament and articular disease of the trapeziometacarpal joint. Eight of 18 joints had chondromalacia alone; 10 contained areas of eburnation in the palmar aspect of the joint. Beak ligament degeneration correlated closely with the presence of articular degeneration; all joints with eburnation demonstrated frank detachment of the ligament from its metacarpal insertion site. Histologically, the collagen fibers of the beak ligament were disorganized at the metacarpal attachment. The normal insertional zone of fibrocartilage was often unrecognizable on the metacarpal side and, in more degenerative specimens, an intervening synovial recess appeared at the palmar beak of the metacarpal. The trapezial insertion of the beak ligament showed no degenerative change. Increasingly severe cartilage disease was associated with progressive and selective degeneration of the collagen framework of the beak ligament at its insertion onto the thumb metacarpal. These localized histopathologic findings further support the existence of an anatomically distinct intra-articular beak ligament essential to the normal function of the trapeziometacarpal joint and suggest an etiologic relationship to osteoarthritic disease. |
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Authors:
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S H Doerschuk; D G Hicks; V M Chinchilli; V D Pellegrini |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of hand surgery Volume: 24 ISSN: 0363-5023 ISO Abbreviation: J Hand Surg Am Publication Date: 1999 May |
Date Detail:
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Created Date: 1999-07-08 Completed Date: 1999-07-08 Revised Date: 2009-06-08 |
Medline Journal Info:
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Nlm Unique ID: 7609631 Medline TA: J Hand Surg Am Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 496-504 Citation Subset: IM |
Affiliation:
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Department of Orthopaedics and Rehabilitation, The Pennsylvania State University, College of Medicine, Milton S. Hershey Medical Center, Hershey 17033, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Cadaver Female Finger Joint / pathology Humans Ligaments, Articular / pathology* Male Osteoarthritis / pathology* Thumb / pathology* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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