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Suprascapular Nerve

 suprascapular-neuropathy-images

suprascapular-neuropathy-images

suprascapular-neuropathy-images

 Suprascapular nerve
  • Origin: Upper trunk of brachial plexus (C5, C6).
  • Innervation: Mixed peripheral nerve with motor supply to the supraspinatus and infraspinatus and sensory innervation to the posterior joint capsule. No cutaneous sensory innervation.
  • Passed beneath the superior transverse scapular ligament. Suprascapular artery passes above the superior transverse scapular ligament.
  • At risk during the posterior interval slide.
  • Curves tightly around the base of the scapular spine at its junction with the posterior glenoid neck, enveloped within a fat pad.
  • The average distance from the origin of the long tendon of the biceps to the motor branches of the supraspinatus is 2 cm. The average distance from the posterior rim of the glenoid to the motor branches of the infraspinatus muscle is 2cm. (Warner JJP,JBJS 1992; 74Am: 36-45)
  • See also Suprascapular Neuropathy. Suprascapular Neuropathy Images
  • (Bibliani LU, Arthroscopy 1990;6:301),