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The suprascapular nerve is a mixed (sensory and motor) nerve that branches from the upper trunk of the brachial plexus. It is derived from the ventral rami of cervical nerves C5-C6. It provides motor innervation to the supraspinatus muscle , and the infraspinatus muscle .
subclavian nerve (C5-C6) suprascapular nerve (C5-C6) anterior division of upper trunk (C5-C6, forms part of lateral cord) posterior division of upper trunk (C5-C6, forms part of posterior cord) The axillary, radial, musculocutaneous and median nerves all contain axons derived from the upper trunk.
All muscles in the lateral rotator group originate from the hip bone and insert on to the upper extremity of the femur. The muscles are innervated by the sacral plexus (L4-S2), except the obturator externus muscle, which is innervated by the lumbar plexus. [2]
The suprascapular nerve which innervates the supraspinatus can be damaged along its course in fractures of the overlying clavicle, which can reduce the person's ability to initiate the abduction. [ citation needed ]
The dorsal scapular nerve is a branch of the brachial plexus, usually derived from the ventral ramus of cervical nerve C5. It provides motor innervation to the rhomboid major muscle, rhomboid minor muscle, and levator scapulae muscle. Dorsal scapular nerve syndrome can cause a winged scapula, with pain and limited motion.
Innervation Supraspinatus muscle: supraspinous fossa: superior [2] facet of the greater tubercle: abducts the humerus: Suprascapular nerve Infraspinatus muscle: infraspinous fossa: middle facet of the greater tubercle: externally rotates the humerus: Suprascapular nerve (C5–C6) Teres minor muscle: middle half of lateral border: inferior facet ...
The hip-drop tackle, league executives began saying last year, inflicted injury at 25 times the rate of the average tackle. And this wasn’t just any injury, the league’s health and safety ...
The suprascapular artery and suprascapular nerve pass around the great scapular notch anteroposteriorly. Supraspinatus and infraspinatus are both supplied by the suprascapular nerve , which originates from the superior trunk of the brachial plexus (roots C5-C6).