5/5 Is the right answer.
The nurse will record 5/5 using a scale of 0 - 5 because the client has complete range of motion against gravity with full resistance.
2/5, 3/5 and 4/5 shows that the client has complete range of motion with gravity with low, fair and moderate resistance respectively. None of these 3 shows complete range of motion against gravity with full resistance.
5/5-muscle strength is rated on a 0-5 scale (no muscle contraction-normal muscle strength). a rating of 5/5 is considered normal muscle strength, meaning that the client has full range of motion against gravity with full resistance.
2/5 muscle strength is full range of motion without gravity (passive motion).
a rating of 3/5 muscle strength is considered fair and means the client has full range of motion with gravity, but not against resistance.
4/5 muscle strength is documented if the client has full range of motion against gravity with moderate resistance.