Abstract
OBJECTIVE--To estimate the prevalence of hip osteoarthritis (OA hip) and hip dysplasia in a sample of Hong Kong men who were unselected with respect to hip symptoms. METHODS--The postmicturition films of 999 men aged 60-75 years, consecutive attenders for intravenous urography between 1987 and 1990 at a regional hospital, were reviewed. OA hip was diagnosed as the occurrence of two or more features of OA using a modified version of the Kellgren and Lawrence scale, or a minimal joint space of 1.5 mm or less. Hip dysplasia was defined as a centre-edge angle of less than 25 degrees, or an acetabular depth of less than 9 mm. The results were compared with British data obtained by similar methods. RESULTS--In the Hong Kong sample, the proportion of men with two or more features of osteoarthritis in at least one hip was about 50% that of the men in the British study (5.4% and 11.0%, respectively). Severe joint space narrowing (of 1.5 mm or less) occurred in 0.7% of the hips in Hong Kong men, compared with 2% in the British men. The proportion of hips with centre-edge angles less than 25 degrees was 4.5% in Hong Kong, compared with 3.6% in Britain, and the prevalence of shallow acetabular depth was greater in Chinese (14.5%) than in the British (2.1%). Radiographic measures of hip dysplasia were not associated with minimal joint space. CONCLUSIONS--Our results have confirmed the lower prevalence of radiographic hip osteoarthritis in Hong Kong men compared with British men. However, acetabular dysplasia was as prevalent among Chinese men as in the British sample. This is evidence against the hypothesis that variations in the frequency of hip osteoarthritis are caused by differences in the occurrence of hip dysplasia.
Full text
PDF
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- Cooperman D. R., Wallensten R., Stulberg S. D. Acetabular dysplasia in the adult. Clin Orthop Relat Res. 1983 May;(175):79–85. [PubMed] [Google Scholar]
- Croft P., Coggon D., Cruddas M., Cooper C. Osteoarthritis of the hip: an occupational disease in farmers. BMJ. 1992 May 16;304(6837):1269–1272. doi: 10.1136/bmj.304.6837.1269. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Croft P., Cooper C., Wickham C., Coggon D. Defining osteoarthritis of the hip for epidemiologic studies. Am J Epidemiol. 1990 Sep;132(3):514–522. doi: 10.1093/oxfordjournals.aje.a115687. [DOI] [PubMed] [Google Scholar]
- Croft P., Cooper C., Wickham C., Coggon D. Osteoarthritis of the hip and acetabular dysplasia. Ann Rheum Dis. 1991 May;50(5):308–310. doi: 10.1136/ard.50.5.308. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Ho S. C. Risk factors of obesity among Hong Kong youths. Public Health. 1990 Jul;104(4):249–255. doi: 10.1016/s0033-3506(05)80473-1. [DOI] [PubMed] [Google Scholar]
- Hurley M. V. The way forward for hydrotherapy. Br J Rheumatol. 1994 Jan;33(1):102–102. doi: 10.1093/rheumatology/33.1.102. [DOI] [PubMed] [Google Scholar]
- KELLGREN J. H., LAWRENCE J. S. Radiological assessment of osteo-arthrosis. Ann Rheum Dis. 1957 Dec;16(4):494–502. doi: 10.1136/ard.16.4.494. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lau E., Symmons D., Bankhead C., MacGregor A., Donnan S., Silman A. Low prevalence of rheumatoid arthritis in the urbanized Chinese of Hong Kong. J Rheumatol. 1993 Jul;20(7):1133–1137. [PubMed] [Google Scholar]
- Murray R. O. The aetiology of primary osteoarthritis of the hip. Br J Radiol. 1965 Nov;38(455):810–824. doi: 10.1259/0007-1285-38-455-810. [DOI] [PubMed] [Google Scholar]
- Solomon L. Patterns of osteoarthritis of the hip. J Bone Joint Surg Br. 1976 May;58(2):176–183. doi: 10.1302/0301-620X.58B2.932079. [DOI] [PubMed] [Google Scholar]
- Vingård E. Overweight predisposes to coxarthrosis. Body-mass index studied in 239 males with hip arthroplasty. Acta Orthop Scand. 1991 Apr;62(2):106–109. doi: 10.3109/17453679108999233. [DOI] [PubMed] [Google Scholar]