Hip dysplasia as risk factor for clinically relevant and radiographic hip osteoarthritis: 10-year results from the CHECK cohort

Author:

Vinge Rebecka12ORCID,Riedstra Noortje3ORCID,Tiderius Carl Johan14ORCID,Bierma-Zeinstra Sita35ORCID,Agricola Rintje3ORCID,Runhaar Jos5ORCID

Affiliation:

1. Department of Clinical Sciences, Lund University , Lund, Sweden

2. Department of Orthopaedics, Halland Hospital , Halmstad, Sweden

3. Department of Orthopaedics and Sports Medicine, Erasmus University Medical Center Rotterdam , Rotterdam, The Netherlands

4. Department of Orthopaedics, Skåne University Hospital , Lund and Malmö, Sweden

5. Department of General Practice, Erasmus University Medical Center Rotterdam , Rotterdam, The Netherlands

Abstract

Abstract Objectives To investigate hip dysplasia as a risk factor for clinically relevant and incident radiographic hip OA. Methods From a prospective cohort (CHECK) of 1002 middle-aged, new consulters for hip and/or knee pain, 468 hips (251 individuals) were selected based on hip pain, available lateral center edge angle (LCEA) and absence of definite radiographic hip OA (Kellgren and Lawrence [KL] grade <2) at baseline, as well as available follow-up measures. Clinically relevant hip OA was defined by an expert diagnosis based on clinical and radiographic data obtained between years 5 and 10 from baseline. Incident radiographic hip OA was defined by KL grade ≥2 or a total hip replacement at the 10-year follow-up. Associations between hip dysplasia (LCEA ≤20°) and outcomes were expressed as an odds ratio (OR) adjusted for age, sex and BMI. Results At baseline, participants had a mean age of 55.5 (5.4) years, 88% were female and, on hip level, the prevalence of hip dysplasia was 3.6% (n = 17). After 10 years, hip dysplasia was associated with an increased risk for clinically relevant hip OA (OR 2.80; 95% CI: 1.15, 6.79), but not for incident radiographic hip OA (OR 0.78; 95% CI: 0.26, 2.30). Conclusion In the long term, baseline hip dysplasia was associated with an increased risk for clinically relevant hip OA, but not for incident radiographic hip OA. With this in mind, we suggest that future research investigating the link between hip dysplasia and OA strives to include a definition for OA that is clinically relevant.

Funder

Greta and Johan Kock Foundation

Erik and Angelica Sparre Foundation and Skåne University Hospital Foundation

Publisher

Oxford University Press (OUP)

Subject

Pharmacology (medical),Rheumatology

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