Shoulder pain is one of the most common problems among athletes, particularly those involved in overhead activities. While rotator cuff tendon and labral tears are well recognised, another important but often overlooked cause is suprascapular nerve entrapment. This condition occurs when the suprascapular nerve is compressed as it passes through narrow anatomical spaces in the shoulder blade, resulting in weakness, dysfunction, and persistent suprascapular nerve compression or pain.

Anatomy and Why Suprascapular Nerve Entrapment Happens

spuparscapular nerve block outline of nerve picture

The suprascapular nerve originates from the brachial plexus and supplies the supraspinatus and infraspinatus muscles, as well as sensation branches to the shoulder joint.

Entrapment usually occurs at two main sites:

  • Suprascapular notch: where the nerve passes under the transverse scapular ligament

  • Spinoglenoid notch: where the nerve runs behind the scapular spine toward the infraspinatus

Repetitive overhead movement, traction injuries, growths (such as paralabral cysts), or direct trauma can all contribute to suprascapular nerve compression. Sports associated with suprascapular nerve entrapment include baseball, tennis, weightlifting, handball and volleyball. 

Symptoms of Suprascapular Nerve Entrapment

Athletes with suprascapular nerve entrapment often describe:

  • Dull, aching pain in the back or top of the shoulder, sometimes moving toward the neck. 

  • Weakness in overhead or throwing movements

  • Fatigue during repetitive activities such as serving in tennis or spiking in volleyball

  • Loss of power when throwing, often described as a “dead arm” sensation

  • In chronic cases, visible muscle wasting in the supraspinatus or infraspinatus muscles

Pain may radiate around the shoulder and upper back, but numbness and tingling are usually absent. 

Clinical Presentation

On examination, doctors may notice:

  • Weakness of shoulder abduction or external rotation 

  • Wasting of the muscles surrounding the scapula

  • Reduced performance in sport-specific tasks such as overhead serving, throwing, or swimming strokes

  • Tenderness at the suprascapular notch in the supraspinatus muscle or spinoglenoid notch behind the AC joint
  • Reproduction of pain in the back of the shoulder with moving the arm across the body. 

Because the presentation can mimic rotator cuff tears or labral injuries, suprascapular nerve entrapment is often challenging to diagnose. Other possible causes of pain and weakness in the back and top of the shoulder include rotator cuff tendonitis, labral tear, quadrilateral space syndrome, Parsonage-Turner syndrome and thoracic outlet obstruction. 

Investigations

  • MRI: useful to exclude labral tears or paralabral cysts, which may compress the nerve, and to assess muscle atrophy. In cases of supraspinatus compression, imaging often reveals atrophy of the supraspinatus and infraspinatus muscles. 

  • Ultrasound: can visualise paralabral cysts and guide targeted injections around the suprascapular nerve 

  • Nerve conduction studies confirm nerve compression, supporting the diagnosis of suprascapular nerve compression.

  • Suprascapular nerve block: local anaesthetic injection around the suprascapular notch may temporarily relieve pain, helping confirm the source.

Treatment of Suprascapular Nerve Pain

Conservative management

  • Rest and activity modification, especially reducing repetitive overhead loading

  • Physiotherapy to optimise scapular control, strengthen unaffected shoulder muscles, and correct biomechanics

  • Ultrasound-guided suprascapular nerve block in the suprascapular fossa for pain relief

Surgical treatment

Surgery is sometimes required if there are ongoing symptoms despite conservative management. If there are no lesions, surgeons consider decompression of the nerve at the suprascapular or spinoglenoid notch. For paralabral cysts and labral tears, arthroscopic surgery is beneficial in repairing the labrum and decompressing the cyst. 

Nerve hydrodissection

An emerging, minimally invasive technique where fluid is injected around the nerve under ultrasound guidance to free it from surrounding tissue and relieve suprascapular nerve compression

Final Word from Sportdoctorlondon about Suprascapular Nerve Entrapment

Suprascapular nerve entrapment is a significant cause of shoulder pain and weakness in athletes, particularly those involved in sports that require overhead movements. Awareness of this condition is essential, as it can mimic other conditions. With accurate diagnosis through imaging and nerve conduction studies, and with targeted management ranging from physiotherapy to injections or surgery, athletes can achieve significant pain relief and restoration of shoulder function. 

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