subscapularis
Technique
1. Templating
Xray
AP in plane of scapula
- template glenoid
- most inferior screw is in thick bone of scapular axillary border
AP humerus
- size and fit of diaphyseal and metaphyseal humeral components
CT
Subscapularis tears
Anatomy
Largest and most powerful rotator cuff
- arises coastal border of scapula
- superior 2/3 tendon inserts into LT
- inferior 1/3 inserts into proximal humerus
Action
- IR (with T major, P major, Lat Dorsi)
- part of force couplet depressing humeral head
Incidence