The prevalence of cam hip morphology in a general population sample.

Autor: Dickenson EJ; University of Warwick, Coventry, CV4 7AL, UK; University Hospitals of Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, UK. Electronic address: E.J.L.Dickenson@warwick.ac.uk., Wall PDH; University of Warwick, Coventry, CV4 7AL, UK; University Hospitals of Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, UK. Electronic address: P.D.H.Wall@warwick.ac.uk., Hutchinson CE; University of Warwick, Coventry, CV4 7AL, UK; University Hospitals of Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, UK. Electronic address: C.E.Hutchinson@warwick.ac.uk., Griffin DR; University of Warwick, Coventry, CV4 7AL, UK; University Hospitals of Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, UK. Electronic address: Damian.Griffin@warwick.ac.uk.
Jazyk: angličtina
Zdroj: Osteoarthritis and cartilage [Osteoarthritis Cartilage] 2019 Mar; Vol. 27 (3), pp. 444-448. Date of Electronic Publication: 2018 Nov 28.
DOI: 10.1016/j.joca.2018.09.019
Abstrakt: 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.
(Copyright © 2018. Published by Elsevier Ltd.)
Databáze: MEDLINE
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