Prevalence of Abnormal Hip Findings in Asymptomatic Participants
- 25 October 2012
- journal article
- research article
- Published by SAGE Publications in The American Journal of Sports Medicine
- Vol. 40 (12), 2720-2724
- https://doi.org/10.1177/0363546512462124
Abstract
Background: The prevalence of abnormal magnetic resonance imaging (MRI) findings in an asymptomatic population has yet to be determined.Purpose: The purpose of this study was to assess a cohort of asymptomatic people to determine the prevalence of hip lesions.Study Design: Cross-sectional study; Level of evidence, 3.Methods: Forty-five volunteers with no history of hip pain, symptoms, injury, or surgery were recruited for enrollment in this institutional review board–approved study. The subjects underwent a unilateral MRI scan with a Siemens 3.0-tesla scanner. The extremity side evaluated by MRI was alternated. All MRI scans were reviewed by 3 fellowship-trained musculoskeletal radiologists. The scans were mixed randomly with 19 scans from symptomatic patients to blind the radiologists to the possibility of patient symptoms. An abnormal finding was considered positive when 2 of 3 radiologists agreed on its presence.Results: The average age of volunteers was 37.8 years (range, 15-66 y); 60% were men. Labral tears were identified in 69% of hips, chondral defects in 24%, ligamentum teres tears in 2.2%, labral/paralabral cysts in 13%, acetabular bone edema in 11%, fibrocystic changes of the head/neck junction in 22%, rim fractures in 11%, subchondral cysts in 16%, and osseous bumps in 20%. Participants older than 35 years were 13.7 times (95% CI, 2.4-80 times) more likely to have a chondral defect and 16.7 times (95% CI, 1.8-158 times) more likely to have a subchondral cyst compared with participants 35 or younger. No other joint lesions were associated with age. Male subjects were 8.5 times (95% CI, 1.2-56 times) more likely to have an osseous bump than female subjects. No other joint lesions were associated with sex.Conclusion: Magnetic resonance images of asymptomatic participants revealed abnormalities in 73% of hips, with labral tears being identified in 69% of the joints. A strong correlation was seen between participant age and early markers of cartilage degeneration such as cartilage defects and subchondral cysts.Keywords
This publication has 26 references indexed in Scilit:
- High Prevalence of Pelvic and Hip Magnetic Resonance Imaging Findings in Asymptomatic Collegiate and Professional Hockey PlayersThe American Journal of Sports Medicine, 2011
- Acetabular Labral Tears and Cartilage Lesions of the Hip: Indirect MR Arthrographic Correlation With Arthroscopy—A Preliminary StudyAmerican Journal of Roentgenology, 2010
- High resolution noncontrast MRI of the hipJournal of Magnetic Resonance Imaging, 2010
- A comprehensive review of hip labral tearsCurrent Reviews in Musculoskeletal Medicine, 2009
- Arthroscopic Management of Labral Tears in the HipPublished by Ovid Technologies (Wolters Kluwer Health) ,2007
- Comprehensive Morphologic Evaluation of the Hip in Patients with Symptomatic Labral TearClinical Orthopaedics & Related Research, 2006
- Magnetic resonance imaging of the hip: Detection of labral and chondral abnormalities using noncontrast imagingArthroscopy: The Journal of Arthroscopic & Related Surgery, 2005
- Diagnostic Accuracy of Clinical Assessment, Magnetic Resonance Imaging, Magnetic Resonance Arthrography, and Intra-Articular Injection in Hip Arthroscopy PatientsThe American Journal of Sports Medicine, 2004
- The Role of Labral Lesions to Development of Early Degenerative Hip DiseaseClinical Orthopaedics and Related Research, 2001
- A Prospective and Blinded Investigation of Magnetic Resonance Imaging of the KneeClinical Orthopaedics and Related Research, 1992