Posterior Cord of Brachial Plexus:
- three posterior divsions of brachial plexus form posterior cord: (C5 , C6 , C7, C8, T1)
- upper subscapular nerve to subscapularis
- thoracodorsal to latissimus dorsi
- lower subscapular nerve to subscapularis and teres major
- axillary nerve
- radial nerve (C5, C6, C7 , C8 , and T1 ) is largest & most frequently injured branch of brachial plexus.
- injury to the brachial plexus below the clavicle usually involves cords cords or peripheral nerves;
- damage to the posterior cord weakens elbow, wrist, and MP joint extension (radial nerve), and shoulder abduction (from axillary nerve)
Injury to the brachial plexus by a fragment of bone after fracture of the clavicle.
Original Text by Clifford R. Wheeless, III, MD.
Last updated by Data Trace Staff on Thursday, December 15, 2011 11:02 am