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CALCIFIC TENDINITIS: NATURAL HISTORY AND ASSOCIATION WITH ENDOCRINE DISORDERS



Abstract

The purpose of this study was to investigate the association of endocrine disease with calcific tendinitis and the effects that such disease has on its natural history.

A retrospective observational cohort study of 102 consecutive patients (125 shoulders) with calcific tendinitis is presented. Seventy-three (71.6 %) female, 29 (28.4 %) male. Compared with population prevalences, significant levels of endocrine disorders were found in our study cohort. Sixty-six patients (81 shoulders, 62 female (93.9 %), 4 male (6.1 %), mean age 50.3 years) with associated endocrine disease were compared with 36 patients (44 shoulders, 11 female (30.6 %), 25 male (69.4 %), mean age 52.4 years) without endocrine disease. The endocrine cohort were significantly younger than the non-endocrine cohort when symptoms started (mean 40.9 years and 46.9 years respectively, p=0.0026), had significantly longer natural histories (mean 79.7 months compared with 47.1 months, p=0.0015) and a significantly higher proportion underwent operative treatment (46.9 % compared with 22.7 %, p=0.0014).

Disorders of thyroid and oestrogen metabolism may contribute to calcific tendinitis aetiology. Classifying calcific tendinitis into Type I idiopathic and Type II secondary or endocrine-related aids prognosis and management.

Correspondence should be addressed to BESS c/o BOA, 35-43 Lincoln’s Inn Fields, London WC2A 3PE