Isolated subscapularis tendon tears are rare and often of traumatic origin. Despite specific clinical tests and exact radiological tools (ultrasound, magnetic resonance imaging), these tendon ruptures are often overlooked. For restoration of normal biomechanical joint function, immediate operative reconstruction is recommended. Tears of the upper subscapularis and partial articular-side tendon can be safely managed arthroscopically. The biceps tendon is often involved, and adequate treatment with tenotomy or tenodesis must be given to prevent postoperative pain. Complete subscapularis tendon avulsions should be reconstructed with an open repair technique. Immediate surgical management provides better results than delayed repair.