Musculocutaneous neuropathy: Difference between revisions
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==Background== | ==Background== | ||
Musculocutaneous neuropathy is a rare peripheral nerve injury involving the musculocutaneous nerve, which arises from the lateral cord of the brachial plexus (C5–C7). It provides motor innervation to the biceps brachii, brachialis, and coracobrachialis muscles, and sensory innervation to the lateral forearm via its terminal branch—the lateral antebrachial cutaneous nerve. | |||
Injury to this nerve may result from direct trauma, shoulder dislocation, surgical complications, or repetitive overhead activity. Recognition in the ED is critical to guide appropriate workup, limit unnecessary imaging, and arrange early neurology or rehabilitation referral when needed. | |||
==Clinical Features== | ==Clinical Features== | ||
Revision as of 23:13, 5 May 2025
Background
Musculocutaneous neuropathy is a rare peripheral nerve injury involving the musculocutaneous nerve, which arises from the lateral cord of the brachial plexus (C5–C7). It provides motor innervation to the biceps brachii, brachialis, and coracobrachialis muscles, and sensory innervation to the lateral forearm via its terminal branch—the lateral antebrachial cutaneous nerve. Injury to this nerve may result from direct trauma, shoulder dislocation, surgical complications, or repetitive overhead activity. Recognition in the ED is critical to guide appropriate workup, limit unnecessary imaging, and arrange early neurology or rehabilitation referral when needed.