| Precontoured fixed-angle volar distal radius plates: a comparison of anatomic fit. | |
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MedLine Citation:
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PMID: 18762111 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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PURPOSE: To compare distal radius volar fixed-angle plates for anatomic fit. METHODS: Twenty embalmed radii were stripped of soft tissues. The volar lip (watershed line) on the volar distal radius served as a reference line. Seven volar fixed-angle plates were tested (Acumed Acu-loc Standard, Hand Innovations DVRAW and DVRAN, Synthes Juxta-articular [JA], Synthes Extra-articular [EA], Trimed Volar Bearing, Zimmer Volar Lateral Column). Four parameters of anatomic fit were studied: (1) site of best fit; (2) percent plate contact; (3) pin-subchondral bone distance; and (4) extraosseous penetrations. The Wilcoxon signed rank test and Pearson's correlation coefficient were used to compare interobserver plate placement. A Kruskal-Wallis analysis of variance was used to compare percent plate contact and pin-subchondral bone distance across all plates. The Bonferroni correction for multiple comparisons was used to compare pin-subchondral bone distances for all possible plate combinations. RESULTS: There was no difference between observers for plate placement. Each plate had a specific site of best fit, and the 7 plates varied widely in best fit location. Percent contact (range, 3% to 6%) between plates was significantly different. Pin-subchondral bone distance across all plates was significantly different. Analysis of all possible plate combinations showed that the Synthes EA pin-subchondral bone distances were significantly different than those of all plates except Zimmer. Amongst the 140 plate insertions, the radiocarpal joint was penetrated in 17, the styloid in 7, (with 6 associated with the DVRAW plate), and the distal radioulnar joint in 9 (all associated with the DVRAW plate). CONCLUSIONS: There was considerable variation in ideal plate location among the 7 plates tested. Total contact was minimal for all plates tested. The Synthes EA pin-subchondral bone distance was significantly greater than those of other plates tested. Joint penetration was relatively common, necessitating use of fluoroscopy and proper plate width. |
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Authors:
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Jonathan E Buzzell; Douglas R Weikert; Jeffry T Watson; Donald H Lee |
Publication Detail:
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Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: The Journal of hand surgery Volume: 33 ISSN: 1531-6564 ISO Abbreviation: J Hand Surg Am Publication Date: 2008 Sep |
Date Detail:
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Created Date: 2008-09-02 Completed Date: 2009-01-30 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: 1144-52 Citation Subset: IM |
Affiliation:
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Vanderbilt Orthopaedic Institute, Hand and Upper Extremity Center, Nashville, TN 37232-8828, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aged Aged, 80 and over Bone Plates* Cadaver Female Fracture Fixation, Internal / instrumentation* Humans Male Radius / anatomy & histology* |
| Comments/Corrections | |
Comment In:
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J Hand Surg Am. 2009 Feb;34(2):365-6; author reply 366
[PMID:
19181243
]
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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