Proximal neuropathies of the upper extremity

Area of Science:

• Neurology
• Anatomy
• Clinical Medicine

Background:

• Mononeuropathies affecting specific nerves of the upper limb are common.
• Injuries to the long thoracic, suprascapular, axillary, and musculocutaneous nerves can occur in isolation or with brachial plexus injuries.

Purpose of the Study:

• To provide a comprehensive review of the diagnosis and management of isolated mononeuropathies of the long thoracic, suprascapular, axillary, and musculocutaneous nerves.
• To consolidate information on the anatomy, clinical presentation, differential diagnosis, electrodiagnostic findings, etiology, treatment, and prognosis for each nerve.

Main Methods:

• Literature review of existing studies and clinical guidelines.
• Synthesis of information regarding the specific mononeuropathies of the four named nerves.
• Focus on isolated injuries, differentiating them from more complex brachial plexus injuries.

Main Results:

• Detailed description of the anatomy relevant to each nerve.
• Outline of characteristic clinical presentations and differential diagnoses.
• Summary of electrodiagnostic findings aiding in diagnosis.
• Discussion of various etiologies and management strategies.
• Prognostic indicators for recovery and functional outcomes.

Conclusions:

• Accurate diagnosis and timely management are crucial for optimizing outcomes in these specific mononeuropathies.
• Understanding the distinct features of each nerve injury facilitates effective treatment planning.
• This review serves as a resource for clinicians managing these conditions.