suprascapular nerve


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Related to suprascapular nerve: subscapular nerve, Lateral pectoral nerve

su·pra·scap·u·lar nerve

[TA]
arises from the upper trunk of the brachial plexus (fifth and sixth cervical spinal nerves), passes downward parallel to the cords of the brachial plexus, then through the scapular notch, supplying the supraspinatus and infraspinatus muscles, and also sending branches to the shoulder joint. It is vulnerable to injury in fractures of the middle third of the clavicle; a lesion of the suprascapular nerve results in a loss of lateral rotation at the shoulder so that when relaxed the limb rotates medially (waiter's tip position); ability to initiate abduction is also affected.
Synonym(s): nervus suprascapularis [TA]

su·pra·scap·u·lar nerve

(sū'pră-skap'yū-lăr nĕrv) [TA]
Arises from the upper trunk of the brachial plexus (fifth and sixth cervical spinal nerves), passes downward parallel to the cords of the brachial plexus, then through the scapular notch, supplying the supraspinatus and infraspinatus muscles, and also sending branches to the shoulder joint. It is vulnerable to injury in fractures of the middle third of the clavicle; a lesion of the suprascapular nerve results in a loss of lateral rotation at the shoulder so that when relaxed the limb rotates medially (waiter's tip position); ability to initiate abduction is also affected.
Synonym(s): nervus suprascapularis [TA] .

suprascapular nerve

A mixed shoulder nerve originating in the superior trunk of the brachial plexus and composed of axons from spinal cord segments C5–C6. It runs through the scapular notch under the superior transverse scapular ligament.

Sensory

It innervates the glenohumeral joint.

Motor

It innervates the supraspinatus and infraspinatus muscles.

See also: nerve
References in periodicals archive ?
The majority of the glenohumeral joint is innervated by the suprascapular nerve (C5-C6; originates from upper trunk of brachial plexus) and the axillary nerve (C5-C6; originates from posterior cord of brachial plexus).
Occurrence of a completely ossified superior transverse scapular ligament can have a genetic influence and can cause suprascapular nerve entrapment syndrome.
[2] found that the anterior coracoscapular ligament reduced the space available for the passage of the suprascapular nerve and postulated that the presence of this ligament may be a new factor contributing to suprascapular neuropathy.
Percutaneous radiofrequency lesioning of the suprascapular nerve for the management of chronic shoulder pain: A case series.
Preliminary study of suprascapular nerve block (SSNB) in hemiplegic shoulder pain.
The suprascapular nerve passes through the suprascapular notch which is converted into foramen by superior transverse scapular liga-ment.1 The suprascapular nerve provides motor inner-vation to the supraspinatus and infraspinatus muscles in addition to branches to the coracohumeral and cora-coacromial ligaments subacromial bursa and the acromioclavicular joint.
The ossification STSL is considered a rare occurrence; it has been a very recurrent theme in the literature and most often correlated with suprascapular nerve entrapment [1, 3,12,13].
The test indicated right suprascapular neuropathy at the suprascapular notch with supraspinatus and infraspinatus involvement, evidence of mild ongoing denervation and mild chronic neuropathic changes of the suprascapular nerve with absence of right cervical radiculopathy or brachial plexopathy.
Suprascapular nerve paralysis is one of the causes of forefoot lameness and is usually associated with trauma to the shoulder region (Weaver, 2004).
(16,17) Good outcome ([greater than or equal to] M3) has been reported in 86% of patient undergoing concurrent transfer to both the axillary and suprascapular nerve. (16,17)
Most involve supraspinatus; blockade of suprascapular nerve thus ablates pain from spasm of this muscle, a predominant feature of the early postoperative pain.
If suprascapular nerve entrapment is suspected, this nerve may be placed under tension in scapular depression and protraction combined with horizontal flexion.