Manual Muscle Testing
Rehabilitation
≈ ¥20-50
(≈ $3-7)
15 min
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Description
Estimated cost for Manual Muscle Testing at general public hospitals in China is about ¥15-40, and at Grade 3A hospitals about ¥20-50, varying by hospital tier and region.
Main Uses
Assessing voluntary muscle strength for neurological and musculoskeletal diagnosis; monitoring disease progression or rehabilitation response (e.g., post-stroke, post-surgery, ICU-acquired weakness); guiding physical/occupational therapy interventions; establishing baseline function before treatment; detecting focal weakness to localize nerve root or peripheral nerve involvement.
Normal Range
Manual muscle testing (MMT) does not yield numerical values; it uses the Medical Research Council (MRC) scale, ranging from 0 to 5: 0 = no contraction; 1 = flicker or trace of contraction; 2 = movement with gravity eliminated; 3 = movement against gravity only; 4 = movement against gravity and moderate resistance; 5 = normal strength (full resistance). A score of 5/5 per muscle group is considered normal.
Low Values - Possible Causes
Neuromuscular disorders (e.g., peripheral neuropathy, ALS), deconditioning or disuse atrophy, acute or chronic musculoskeletal injury (e.g., rotator cuff tear, ACL rupture), central nervous system lesions (e.g., stroke, spinal cord injury), systemic illness (e.g., severe malnutrition, advanced cancer, inflammatory myopathies like polymyositis).
High Values - Possible Causes
Manual muscle testing (MMT) has no clinically meaningful 'high' value — scores cannot exceed 5/5. A rating >5/5 is not valid per MRC standards; apparent 'hyperstrength' may reflect compensatory strategies, tester error, inadequate resistance application, or misinterpretation (e.g., using synergistic muscles). True supranormal isolated muscle strength is not physiologically measurable via MMT.