The musculocutaneous nerve

Abstract

We have analysed the results of repair of traumatic lesions of the musculocutaneous nerve in 85 patients, which were graded by Seddon's modification of the Medical Research Council system into three types of injury: open 'tidy', open 'untidy' and closed 'traction'. They were also correlated with associated arterial injury. There were 57 good, 17 fair and 11 poor results. The type of injury was the most important factor in determining the result; 12 of 13 open-tidy lesions gave good results compared with 30 of 48 closed-traction lesions. The results were better when the nerves were repaired within 14 days of injury and when grafts were less than 10 cm long. They were worse in the presence of associated arterial or bony injury.

Factors predicting sensory and motor recovery after the repair of upper limb peripheral nerve injuries

“…Of these, 126 were selected for review of the full text after primary screening, and 67 were judged to meet the criteria for inclusion in the present study[78910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273]. …”

The Musculocutaneous Nerve: Ultrasound Appearance for Peripheral Nerve Block

“…5 The MCN is a mixed motor and sensory peripheral nerve, which typically originates from the lateral cord of the brachial plexus (C5 and C6 roots). 6 During its path through the CB, the MCN innervates the biceps, the brachialis, and the CB itself. After giving off its motor fibers, the MCN becomes the lateral cutaneous nerve that innervates the forearm to the styloid process of the radius.…”

High-resolution 3-Tesla magnetic resonance neurography of musculocutaneous neuropathy

“…Surgical decompression is reserved for refractory cases and in cases of nerve transection. 1,8 Conclusion 3T MRN enables accurate visualization of musculocutaneous nerve injury and associated brachial plexopathy. It serves as a useful adjunct tool in the clinical decision-making process to determine the appropriateness of surgery.…”

“…5 Depiction of musculocutaneous nerve continuity is important because an earlier surgical intervention is associated with better prognosis. 8 MRN has several advantages compared with ultrasound imaging: it is not operator-dependent, it depicts subtle signal intensity changes of nerves and muscles due to its higher soft tissue contrast resolution, and it can easily detect other joint or tendon pathologies that may mimic neuropathy. This was apparent in our first patient, where the biceps tendon was partially torn in its intra-articular portion, accounting for some of the symptoms of biceps weakness.…”