Hand Atrophy Differential Diagnosis
From WikiMSK
Causes of unilateral atrophy and weakness of intrinsic hand muscles
- All intrinsic hand muscles
- Combined ulnar neuropathy and carpal tunnel syndrome
- Lower brachial plexopathy (including neurogenic thoracic outlet syndrome)
- C8 radiculopathy
- Amyotrophic lateral sclerosis
- Focal motor neuron disease (monomelic amyotrophy)
- Cervical syringomyelia
- High cervical or foramen magnum spinal cord compression
- Peripheral polyneuropathy
- Distal myopathy
- All intrinsic muscles excluding the thenar muscles
- Ulnar neuropathy at the elbow
- Ulnar neuropathy at the wrist (Guyon’s canal)
- All intrinsic muscles excluding the thenar and hypothenar muscles
- Ulnar neuropathy at the wrist (distal Guyon’s canal or pisohamate hiatus)
- Limited to the thenar muscles
- Carpal tunnel syndrome
- High median neuropathy (including the pronator syndrome)
- Neurogenic thoracic outlet syndrome
- T1 radiculopathy
