Compression or irritation of the soft tissues on the humerus, including the rotator cuff and the slide acromial bursa, is called shoulder pinch syndrome.
Is the most common cause of shoulder pain.
Symptoms usually result from the shoulder being held high above the head or from repetitive load.
During humerus lifting, rotator cuff to the anterior and lower 1/3 acromial area causes wear, which is related to excessive or unstable glenohumeral joint activity and increased displacement of humerus head to the humerus tissue, in addition to structural factors of the bone.
Pincer pain usually occurs in the position of lift, horizontal abduction, and maximum external rotation of the shoulder.
It is usually seen in the throwing movements of athletes.
Strains of other muscles and tendons of the shoulder joint occur in the middle and anterior pectoralis, biceps brachycephali and coracobrachialis during racket movement.
Before a member to find us, complained of shoulder discomfort after play tennis, can’t do lift on abducent movement, there was a pain in do push pull, after assessment, her chest and biceps and tense (, thoracic flexibility is poorer, back muscle of diamond, trapezius muscle middle beam strength is weak, lack of stability of the rotator cuff muscles, after rehabilitation training four pain, discomfort, have very big improvement, and gradually improve the previous incorrect posture.
Common causes of injury
- Impaired posture or muscle imbalance
The kyphosis of the thoracic spine increases, the scapula protrudes forward, and the glenohumeral joint is in the position of internal rotation. At this time, the pectoralis minor, biceps brachii, and levator scapulae muscles are tense, and the external rotation muscles are weak. Lift up the arm will destroy the correct motion order of the scapula.
- Decrease of stretching activity of thoracic spine
This is related to the kyphosis of the thoracic spine, the forward tilt of the head, the long-term kyphosis of the thoracic spine, the range of motion of the extension of the thoracic spine will be reduced, and it will be very difficult to lift your arms in this position.
- Fatigue caused by overuse of rotators or biceps brachii
Unable to provide the strength to support the movement of the joint, the stability of the shoulder joint decreased in the movement prone to pain.