Traumatic ruptures of the subscapularis tendon in children are rare and often missed. In this case report, a 70 kg person landed on a 13-year-old boy with his arm abducted and rotated, causing pain and restricted motion. An MRI showed a total rupture of the subscapularis with avulsion of the minor tubercle and subluxation of the biceps tendon. The avulsion was fixed to the foot print and the biceps tendon in the bicipital groove, by delto-pectoral approach, using three anchors. It is important to avoid missing these injuries. They may cause chronic shoulder pain and decreased motion if left untreated.
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