American Academy of Orthopaedic Surgeons
- Shoulder, arm, and elbow section http://orthoinfo.org/menus/arm.cfm [1]
- Shoulder joint replacement http://orthoinfo.org/topic.cfm?topic=A00094 [2]
Links:
[1] http://orthoinfo.org/menus/arm.cfm
[2] http://orthoinfo.org/topic.cfm?topic=A00094