Table 1.

Anatomical landmarks used to approximate joint centers of rotation

Joint	Anatomical landmark
Shoulder	Midpoint between the acromion process of the scapula and the greater tubercle of the humerus
Elbow	Midpoint between the lateral epicondyle of the humerus and the lateral aspect of the radial head
Wrist	Radial styloid process
Hip	Greater trochanter of the femur
Knee	Midpoint between the lateral epicondyle of the femur and the lateral condyle of the tibia
Ankle	Lateral malleolus of the fibula