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The prevalence of cam hip morphology in a general population sample
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Dickenson, Edward J., Wall, Peter D. H., Hutchinson, Charles E. and Griffin, Damian R. (2019) The prevalence of cam hip morphology in a general population sample. Osteoarthritis and Cartilage, 27 (3). pp. 444-448. doi:10.1016/j.joca.2018.09.019 ISSN 1063-4584.
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Official URL: https://doi.org/10.1016/j.joca.2018.09.019
Abstract
Objective
Cam hip morphology is associated with femoroacetabular impingement (FAI) syndrome and causes hip osteoarthritis (OA). We aimed to assess the prevalence of cam hip morphology in a sample representative of the general population, using a measure with a predefined diagnostic accuracy.
Design
Patients aged 16–65, who were admitted to a major trauma centre and received a computed tomography (CT) pelvis were retrospectively screened for eligibility. Subjects with proximal femoral, acetabular or pelvic fractures and those who were deceased were excluded. Eligible subjects were divided into 10 groups based on gender and age. 20 subjects from each group were included. Subjects' index of multiple deprivation (IMD) and ethnicity were recorded. CT imaging was assessed and alpha angles (a measure of cam morphology) measured in the anterosuperior aspect of the femoral head neck junction. An alpha angle greater than 60° was considered to represent cam morphology. This measure and technique has a predefined sensitivity of 80% and specificity of 73% to detect cam morphology associated with FAI syndrome. The prevalence of cam morphology was reported as a proportion of subjects affected with 95% confidence intervals.
Results
200 subjects were included. The sample was broadly representative of the UK general population in terms of IMD. 155 subjects (86%) identified as white. Cam morphology was present in 47% (95% CI 42,51) of subjects.
Conclusions
In this sample, broadly representative of the UK general population 47% of subjects had cam hip morphology; a hip shape associated with FAI syndrome and OA.
| Item Type: | Journal Article | ||||||||
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| Subjects: | R Medicine > RD Surgery | ||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Clinical Trials Unit Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School > Health Sciences Faculty of Science, Engineering and Medicine > Medicine > Warwick Medical School |
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| Library of Congress Subject Headings (LCSH): | Hip joint -- Diseases, Acetabulum (Anatomy) -- Diseases | ||||||||
| Journal or Publication Title: | Osteoarthritis and Cartilage | ||||||||
| Publisher: | Elsevier Science BV | ||||||||
| ISSN: | 1063-4584 | ||||||||
| Official Date: | 1 March 2019 | ||||||||
| Dates: |
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| Volume: | 27 | ||||||||
| Number: | 3 | ||||||||
| Page Range: | pp. 444-448 | ||||||||
| DOI: | 10.1016/j.joca.2018.09.019 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Date of first compliant deposit: | 15 November 2018 | ||||||||
| Date of first compliant Open Access: | 15 November 2018 | ||||||||
| RIOXX Funder/Project Grant: |
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