Table 3 Major preoperative and postoperative errors

1. Sphericity of humeral head

1. Incision placement

2. Dysplasia of glenoid

2. Incomplete release or restoration of lateral rotation

3. Severe glenoid retroversion

3. Excessive release of subscapularis

4. Strength of latissimus dorsi/teres major

4. Excessive lateral rotation in osteotomy

5. Injury to muscular neurovascular pedicle

6. Incorrect or poor insertion of transferred tendon

7. Immobilization in excessive medial or lateral rotation