Muscle Weakness: Proximal
Muscle testing
Place the muscle in a position in which its primary action can be evaluated.
The grading of muscle power is usually denoted on a 0–5 scale:
- 0/5 muscle is paralyzed
- 1/5 denotes a flicker of movement
- 2/5 is a muscle that can move slightly on the bed
- 3/5 is a muscle that can just sustain itself against gravity
- 4/5 is a slightly weak muscle
- 5/5 muscle as completely normal
Key Causes
- Neuromuscular Junction Disorders
- Myopathies