Pedretti Ot Muscle Grades Pg. 536

Front 1

Part moves through complete ROM, against gravity, and maximal resistance

Back 1

Normal (N) Grade 5

Front 2

Part moves through complete ROM, against gravity, and moderate resistance

Back 2

Good (G) Grade 4

Front 3

Part moves through complete ROM, against gravity, and slight resistance

Back 3

Fair + Grade 3+

Front 4

Part moves through complete ROM, against gravity

Back 4

Fair Grade 3

Front 5

Part moves through more than 50% of available ROM, against gravity

Back 5

Fair - Grade 3-

Front 6

Part moves through less than 50% of available ROM against gravity or through complete ROM with gravity minimized

Back 6

Poor + (2+)

Front 7

Part moves through complete ROM with gravity minimized

Back 7

Poor (2)

Front 8

Part moves through incomplete ROM with gravity minimized

Back 8

Poor- (2-)

Front 9

Contraction can be observed or felt, but there is not motion

Back 9

Trace (1)

Front 10

No muscle contraction can be seen or felt

Back 10

Zero (0)