Axillary neuropathy
Background
Axilary nerve
- The axillary nerve supplies innervation to:
- Deltoid
- Teres minor
- Long head of triceps
- Skin over lateral shoulder
Clinical Features
Cutaneous innervation of the upper limb
- Injury associated with the following injuries:
- Weak arm abduction (from 15 to 90 degrees)
- Weak shoulder flexion, extension and rotation of shoulder
- Decreased sensation of upper lateral arm (over deltoid)
Differential Diagnosis
Upper extremity peripheral nerve syndromes
Median Nerve Syndromes
- Carpal tunnel syndrome
- Pronator teres syndrome
- Anterior interosseous neuropathy
Ulnar Nerve Syndromes
- Ulnar neuropathy at the elbow and wrist
Radial Nerve Syndromes
- Radial neuropathy at the spiral groove (ie. "Saturday night palsy")
- Posterior interosseous neuropathy
Proximal Neuropathies
- Suprascapular neuropathy
- Long thoracic neuropathy
- Axillary neuropathy
- Spinal accessory neuropathy
- Musculocutaneous neuropathy
Evaluation
- Typically a clinical diagnosis in the ED
Management
Disposition
External Links
References
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