| Three-dimensional assessment of cam engagement in femoroacetabular impingement. | |
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MedLine Citation:
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PMID: 20952150 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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PURPOSE: The purpose of our study was to 3-dimensionally assess cam engagement in male patients with symptomatic femoroacetabular impingement during motion. METHODS: A total of 13 hips with cam-type impingement were investigated. Patient anatomy and clinical range of motion were determined. After 3-dimensional segmentation and reconstruction, the dynamic behavior of the cam lesion was investigated for the previously analyzed motions. RESULTS: Important differences in the pattern of cam engagement were noticed. Abutment of the cam lesion and the acetabular cartilage was observed in flexion in 7 hips (54%) and in abduction in 11 hips (84%). Internal rotation with the hip in 90° of flexion caused intrusion of the cam lesion into the joint in 10 of the investigated cases (77%). Neutral rotation did not cause any conflict between the cam lesion and acetabulum for the measured range of motion. A similar area in the anterosuperior quadrant of the acetabulum appeared to be involved in the different motions that were analyzed. CONCLUSIONS: Typically, during internal rotation in 90° of flexion, the centromedial portion of the cam lesion was found to abut against the anterosuperior quadrant of the acetabular cartilage. During abduction and flexion, this appeared to be the lateral and medial portions of the cam lesion, respectively. All motions causing cam intrusion appeared to focus on the same cartilage area of the acetabulum in its anterosuperior quadrant. LEVEL OF EVIDENCE: Level II, diagnostic study. |
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Authors:
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Emmanuel A Audenaert; Peter Mahieu; Christophe Pattyn |
Publication Detail:
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Type: Journal Article Date: 2010-10-16 |
Journal Detail:
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Title: Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association Volume: 27 ISSN: 1526-3231 ISO Abbreviation: Arthroscopy Publication Date: 2011 Feb |
Date Detail:
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Created Date: 2011-01-26 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 8506498 Medline TA: Arthroscopy Country: United States |
Other Details:
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Languages: eng Pagination: 167-71 Citation Subset: IM |
Copyright Information:
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Copyright © 2011 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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