0- Zero
No muscle contraction can be seen or felt.
Contraction can be felt but there is no motion.
2- Poor -
Less than full ROM with gravity decreased
Full ROM with gravity decreased
2+. Poor +
Full ROM with gravity decreased and slight resistance; less than 50% ROM against gravity.
3- Fair -
More than 50% ROM against gravity.
Full ROM against gravity without resistance.
3+. Fair +
Full ROM against gravity with slight resistance.
Full ROM against gravity with moderate resistance.
Full ROM against gravity with maximum resistance.