Relationship between cam morphology, hip symptoms, and hip osteoarthritis: the Musculoskeletal pain in Ullersaker STudy (MUST) cohort

Joanne L. Kemp*, Nina Østerås, Alexander Mathiessen, Lars Nordsletten, Rintje Agricola, Jan H. Waarsing, Joshua J. Heerey, May Arna Risberg

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Background: The primary aim of this study was to determine the prevalence of cam morphology in a cohort of people aged 40–55 years. Secondary aims were to: (1) determine differences in participant characteristics, physical impairments, radiographic and ultrasound appearances of people with and without cam morphology; and (2) explore associations between cam morphology and radiographic measures of hip osteoarthritis (OA). Methods: 107 people (68% women; 49 ± 4 years) from the Musculoskeletal pain in Ullensaker (MUST) Study underwent the clinical and imaging examinations. Examinations included questionnaires, hip range, functional task performance, pelvic radiographs and ultrasound. Alpha angle and radiographic hip OA (Kellgren Lawrence (KL) and minimal joint space (MJS)) were determined. Results: The prevalence of cam morphology was 42% and was bilateral in 47%. People with cam morphology were 6 times more likely to have a KL score ⩾2 (adjusted odds ratio [95% confidence intervals, p-value]) 6.386 [1.582–37.646, p = 0.012]) and 4 times more likely to have MJS <2.0 mm (adjusted odds ratio 4.032 [1.031–12.639, p = 0.045]). The prevalence of radiographic OA features ranged from 4–13% in people with cam morphology, and 0–3% in those without. Those with cam morphology also demonstrated reduced hip flexion and rotation range (p = 0.018–0.036) compared with those without. There was no association between ultrasonic features and patient reported outcomes, and cam morphology. Conclusions: In a cohort aged 40–55 years, the prevalence of cam morphology was high (42%), with a significant relationship between cam morphology and radiographic measures of hip OA. Further longitudinal studies should explore the relationship between cam morphology and hip OA in younger people.

Original languageEnglish
Pages (from-to)789-796
Number of pages8
JournalHIP International
Volume31
Issue number6
Early online date23 Jul 2020
DOIs
Publication statusPublished - Nov 2021

Bibliographical note

Funding Information:
The author(s) disclosed receipt of the following financial support for the research, authorship, and/or publication of this article: The MUST study is funded by the South-Eastern Norway Regional Health Authority Osteoarthritis research group with additional funding from Anders Jahre Humanitarian Foundation, Dr Trygve Gythfeldt & Wife’s Research Fund, and the Norwegian Rheumatism Association Research Fund.

Publisher Copyright:
© The Author(s) 2020.

Fingerprint

Dive into the research topics of 'Relationship between cam morphology, hip symptoms, and hip osteoarthritis: the Musculoskeletal pain in Ullersaker STudy (MUST) cohort'. Together they form a unique fingerprint.

Cite this