Table 1.

Positions for testing key muscles for grades 4 or 5

C5	Elbow flexed at 90°, arm at patient's side and forearm supinated
C6	Wrist in full extension
C7	Shoulder is in neutral rotation, adducted, and in 90° of flexion with elbow in 45° of flexion
C8	Full-flexed position of the distal phalanx with the proximal finger joints stabilized in extended position
T1	Full-abducted position of fifth digit (of the hand)
L2	Hip flexed to 90°
L3	Knee flexed to 15°
L4	Full-dorsiflexed position of ankle
L5	First toe fully extended
S1	Hip in neutral rotation, the knee is fully extended, and the ankle in full plantar flexion