We present two cases of primary glenoid dysplasia occurring in a father and son. The father presented at age 18 years and the son 7 years later at the age of 3 years. Both presented with recurrent shoulder pain and radiographs showed primary glenoid dysplasia. Our cases would strongly suggest autosomal dominant inheritance in this condition. Very few cases of familial occurrence of the disease have been reported. Since shoulder surgeons are the most likely physicians to encounter this condition knowledge of the pattern of inheritance may allow effective counselling.
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