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WASTING OF SMALL MUSCLES OF HAND (classified according to site of pathology) |
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cord lesions affecting anterior horn cells at T1 level: |
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motor neurone disease Friedreich's ataxia syringomyelia cord compression polio meningovascular syphilis Charcot-Marie-Tooth disease |
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T1 root lesions: |
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cervical spondylosis 'dumb-bell' neurofibroma |
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brachial plexus lesions (lower cord - T1): |
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cervical rib Pancoast tumour Klumpke's paralysis (traumatic) |
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peripheral nerve lesions: |
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median and ulnar nerve lesions |
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muscle disease / other: |
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disuse atrophy rheumatoid arthritis |
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click here for a classification according to whether unilateral or bilateral