© 1992 British Society for Rheumatology
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IS THE HIP INVOLVED IN GENERALIZED OSTEOARTHRITIS?
*MRC Environmental Epidemiology Unit, University of Southampton, Southampton General Hospital Southampton SO9 4XY
Rheumatology Unit, Department of Medicine, Bristol Royal Infirmary Bristol BS2 8HW
Correspondence to:
Correspondence to Dr Croft, current address: ARC Epidemiology Research Unit, Stopford Building (University of Manchester), Oxford Road, Manchester M13 9PT
Elbow pain is a common complaint and elbow hyperostosis a frequent radiological condition. However, little is known about the association between the clinical and radiological findings. To evaluate the relationship between spinal and extraspinal hyperostotic features and the clinical relevance of elbow hyperostosis we have performed the first controlled, double-blinded study of 85 hospitalized probands, 33 with and 52 without thoracospinal hyperostosis on lateral chest X-ray. Elbow and shoulder hyperostosis were graded on bilateral standard radiographs. Elbow pain was assessed by an interviewer using a standardized questionnaire and extraskeletal causes of elbow pain were recorded. The prevalence of elbow hyperostosis was increased in cases with thoracospinal hyperostosis compared to controls (82% versus 58%, X2 = 5.32, P<0.025, n = 85, odds ratio (OR) 3.30 (95% Cl 1.16–9.35)). Similarly, the prevalence of elbow hyperostosis was increased in cases with shoulder hyperostosis compared to controls (83% versus 60%, x2 = 4.51, P<0.05, n = 84, OR = 3.20 (95% CI 1.06–9.66)), emphasizing the multifocal nature of hyperostotic features. Elbow pain was only slightly more prevalent in cases with elbow hyperostosis compared to controls (21% versus l3%, x2 = 0.75, NS, OR = 1.84 (95% CI 0.46–7.44)). We conclude that elbow hyperostosis is a radiological finding of doubtful clinical relevance.
KEY WORDS: Hyperostosis, Spinal osteophytosis, Elbow, Pain
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