| The prevalence of cam-type femoroacetabular deformity in asymptomatic adults. | |
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MedLine Citation:
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PMID: 21969426 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We performed a retrospective examination of the anteroposterior pelvic CT scout views of 419 randomly selected patients between April 2004 and August 2009 in order to determine the prevalence of cam-type femoroacetabular deformity in the asymptomatic population. The CT scans had all been undertaken for conditions unrelated to disorders of the hip. The frequency of cam-type femoroacetabular deformity was assessed by measuring the α-angle of each hip on the anteroposterior images. The α-angles were classified according to the Copenhagen Osteoarthritis Study. Among 215 male hips (108 patients) the mean α-angle was 59.12° (37.75° to 103.50°). Of these, a total of 30 hips (13.95%) were defined as pathological, 32 (14.88%) as borderline and 153 (71.16%) as normal. Among 540 female hips (272 patients) the mean α-angle was 45.47° (34.75° to 87.00°), with 30 hips (5.56%) defined as pathological, 33 (6.11%) as borderline and 477 (88.33%) as normal. It appears that the cam-type femoroacetabular deformity is not rare among the asymptomatic population. These anatomical abnormalities, as determined by an increased α-angle, appear to be twice as frequent in men as in women. Although an association between osteoarthritis and femoroacetabular impingement is believed to exist, a long-term epidemiological study is needed to determine the natural history of these anatomical abnormalities. |
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Authors:
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K A Jung; C Restrepo; M Hellman; H AbdelSalam; W Morrison; J Parvizi |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of bone and joint surgery. British volume Volume: 93 ISSN: 0301-620X ISO Abbreviation: J Bone Joint Surg Br Publication Date: 2011 Oct |
Date Detail:
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Created Date: 2011-10-04 Completed Date: 2011-11-22 Revised Date: 2012-02-01 |
Medline Journal Info:
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Nlm Unique ID: 0375355 Medline TA: J Bone Joint Surg Br Country: England |
Other Details:
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Languages: eng Pagination: 1303-7 Citation Subset: AIM; IM |
Affiliation:
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Rothman Institute, 925 Chestnut Street, Philadelphia, Pennsylvania 19107, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Age Factors Aged Aged, 80 and over Female Femoracetabular Impingement / epidemiology*, pathology, radiography Hip Joint / radiography Humans Male Middle Aged Pennsylvania / epidemiology Prevalence Retrospective Studies Tomography, X-Ray Computed |
| Comments/Corrections | |
Erratum In:
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J Bone Joint Surg Br. 2011 Dec;93(12):1679 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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