Non-key muscle functions

Movement	Root level
Shoulder: Flexion, extension, abduction, adduction, internal and external rotation Elbow: Supination	C5
Elbow: Pronation Wrist: Flexion	C6
Finger: Flexion at proximal joint, extension Thumb: Flexion, extension and abduction in plane of thumb	C7
Finger: Flexion at metacarpophalangeal joint Thumb: Opposition, adduction, and abduction perpendicular to palm	C8
Finger: Abduction of little finger	T1
Hip: Adduction	L2
Hip: External rotation	L3
Hip: Extension, abduction, internal rotation Knee: Flexion Ankle: Inversion and eversion Toe: Metacarpophalangeal and interphalangeal extension	L4
Hallux and toe: Distal interphalangeal and proximal interphalangeal flexion and abduction	L5
Hallux: Adduction	S1