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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 .
The supraspinatus (pl.: supraspinati) is a relatively small muscle of the upper back that runs from the supraspinous fossa superior portion of the scapula (shoulder blade) to the greater tubercle of the humerus. It is one of the four rotator cuff muscles and also abducts the arm at the shoulder.
The nerves supplying the shoulder joint all arise in the brachial plexus. They are the suprascapular nerve, the axillary nerve and the lateral pectoral nerve. Anatomical illustration of the brachial plexus
A common cause of shoulder pain in rotator cuff impingement syndrome is tendinosis, which is an age-related and most often self-limiting condition. [ 14 ] Studies show that there is moderate evidence that hypothermia (cold therapy) and exercise therapy used together are more effective than simply waiting for surgery and they suggest the best ...
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.
The dorsal scapular nerve innervates rhomboid major, minor and levator scapulae. The long thoracic nerve innervates serratus anterior. The suprascapular nerve innervates supraspinatus and infraspinatus; The lateral pectoral nerve innervates pectoralis major; The medial pectoral nerve innervates pectoralis major and minor; The upper subscapular ...
Dorsal scapular nerve syndrome can be caused by nerve compression syndrome. A winged scapula is the most common symptom. [7] Shoulder pain may occur. [7] It causes weakness in rhomboid major muscle, rhomboid minor muscle, and levator scapulae muscle. [7] The range of motion of the shoulder may be limited. [7] Treatment is usually conservative. [7]
Suprascapular notch stenosis is a narrowing of the notch internal space that can potentially compress the suprascapular nerve leading to suprascapular nerve entrapment. Al-Redouan et al. 2020 predicted the morphological pattern of the suprascapular notch stenosis revealing higher incidence in the discrete notch (Type V according to the ...