[Suprascapular nerve impairment syndrome] Suprascapular nerve impairment syndrome is the most common cause of shoulder pain. It accounts for 1% to 2% of all patients with shoulder pain. [Cause] 1. It can mostly be caused by acute injuries such as scapula fracture or glenohumeral

【Suprascapular nerve impairment syndrome 】

Suprascapular nerve impairment syndrome is the most common cause of shoulder pain. It accounts for 1% to 2% of all patients with shoulder pain and .

[Cause]

1. It can mostly be caused by acute injuries such as scapula fracture or glenohumeral joint injury.

2, shoulder joint dislocation damages the suprascapular nerve. Forward flexion during scapula fixation reduces the mobility of the suprascapular nerve and is prone to injury.

3, tumors, nodular cysts of glenohumeral joints, and fibrosis of the suprascapular notches are the main causes of suprascapular nerve pressure.

4, local lipoma and nodules can compress the backbone of the suprascapular nerve or its nerve branches, causing pressure.

[Clinical manifestations]

1. The dull pain in the periphery of the shoulder is located on the outer side of the shoulder and can radiate to the back of the neck and arms, but the radiation pain is often located on the back of the upper arm.

2. Patients often feel shoulder abduction and external rotation. However, most cases do not have significant muscle atrophy, so clinical diagnosis is difficult.

3. Patients with trauma or strain mainly have sharp pain on their shoulders, which can be aggravated when their shoulders move.

4. Most of them are persistent, which affects sleep, difficulty lifting the arm or the affected hand cannot reach the opposite shoulder. Some patients have no other symptoms except shoulder pain, and the pain can last for several years.

5, , scapular , tenderness in the inter-triangular area of ​​the clavicle and scapular supratrium is the most common sign of suprascapular nerve impairment, and tenderness may also occur in trapezoidal muscle.

【Examination】

1, EMG

EMG EMG velocity test and nerve conduction speed test help diagnose the disease. The supraspinatus myomyospinatus may experience positive waves, fibrillation waves, and reduced or disappeared in the motor potential.

2, X-ray examination

tilt scapula toward the tail on the posterior anterior X-ray film to check the morphology of the suprascapular notch, which is helpful for diagnosis.

[Diagnosis]

requires medical history, physical examination and electromyography to confirm the diagnosis.

1. Place the affected hand on the opposite shoulder and keep the elbow at a horizontal position, so that the affected elbow pulls to the healthy side, which can stimulate the suprascapular nerve that is pressed and induce shoulder pain.

2. Lidocaine injection locally blocks the symptoms quickly relieve, which helps the diagnosis of suprascapular nerve impairment syndrome.

[Differential Diagnosis]

1. It should be distinguished from shoulder joint diseases such as rotator cuff injury, shoulder periarthritis , shoulder impact syndrome, as well as brachial plexus neuritis , cervical disc disease, glenohumeral arthritis, acroclavicular joint diseases, etc. B ultrasound , CT, and MRI examinations help differential diagnosis.

【How to deal with it?

1, conservative treatment

adopts rest, physiotherapy, painkillers and local closed treatment. To clarify chronic pressure, neurorelieving treatment should be performed.

2. Surgical therapy

is mainly surgical loosening, and three approaches are often used: posterior approach, anterior approach and neck approach. The posterior approach is the most commonly used surgical approach

3. Accurate minimally invasive relaxation treatment under the guidance of three muscle bones, which can relieve nerve impairment and have an immediate effect.

Doctor Brother Xiaoqiang