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The Journal of Bone & Joint Surgery British Volume
Vol. 86-B, Issue 5 | Pages 696 - 700
1 Jul 2004
Harvie P Ostlere SJ Teh J McNally EG Clipsham K Burston BJ Pollard TCB Carr AJ

From a retrospective, cohort study of 205 patients diagnosed with full-thickness tears of the rotator cuff, we determined, using ultrasound, the prevalence of such tears in their 129 siblings. Using 150 spouses as controls, the relative risk of full-thickness tears in siblings versus controls was 2.42 (95% CI 1.77 to 3.31). The relative risk of symptomatic full-thickness tears in siblings versus controls was 4.65 (95% CI 2.42 to 8.63). The significantly increased risk for tears in siblings implies that genetic factors play a major role in the development of full-thickness tears of the rotator cuff