Shoulder strain

Introduction Shoulder joint strain is more common than acute trauma. Some sports that need to increase and rotate the upper limbs, such as throwing the ball, swimming and raising the hand, have the opportunity to cause shoulder strain. Shoulder strain includes shoulder tendonitis, shoulder instability and shoulder impact syndrome. The causes of these three problems are related to pathology, and three symptoms may also exist at the same time.

Cause

major factor

1. The shoulder movement is too large.

2. The action is too strong.

3. The shoulder movement frequency is too high.

Secondary factor

1. Training and physical condition are not good.

2. The action is wrong.

3. Unbalanced muscle strength.

4. The joint is too tight or too loose.

5, the posture is not correct.

an examination

Related inspection

CT examination of bone and joint soft tissue examination of the shoulder joint abduction test scapula examination

1, history of chronic shoulder strain, long-term fixed medical history, etc., combined with shoulder pain, activity disorders and so on.

2, X-ray examination: there is a certain diagnostic effect on the inflammation around the shoulder joint, mainly showing the blur deformation or even disappearance of the fat line under the shoulder. The soft tissue contrast is reduced, and the fat line under the shoulder is blurred and even disappeared. Calcification of the soft tissue of the shoulder, in addition, osteoporosis, joint hyperplasia or formation of osteophytes or narrowing of joint space in the acromioclavicular joint.

3, bone and joint soft tissue CT examination: can accurately find the problem of shoulder joints and muscle soft tissue.

Differential diagnosis

Periarthritis around the shoulder, also known as leaking shoulder wind, fifty shoulders, frozen shoulder, referred to as shoulder periarthritis, is a common symptom of shoulder joint pain and mobility inconvenience. The prevalence of this disease is around 50 years old, and the incidence rate of women is slightly higher than that of men, which is more common in manual workers. If you do not get effective treatment, it may seriously affect the functional activities of the shoulder joint and hinder daily life. In the early stage of the disease, the shoulder joint showed paroxysmal pain, which was often induced by weather changes and fatigue. Later, it gradually developed into persistent pain, and gradually increased, sputum light and heavy, night can not be paralyzed, can not lie on the side of the affected side, shoulder joint Active and passive activities in all directions are limited. When the shoulder is pulled, it can cause severe pain. The shoulder joint can be extensively tender and radiate to the neck and elbow, and there can be varying degrees of deltoid atrophy.

Traumatic anterior dislocation of the shoulder has a significant history of trauma, shoulder pain, swelling and dysfunction. The injured limb is elastically fixed in the mild abduction internal rotation, elbow flexion, and the affected side forearm is supported by the contralateral hand. The appearance is a "square shoulder" deformity, the shoulder peak is prominent, and the shoulder is empty. The humeral head can be touched under the armpits, under the condyles or under the collarbone. Mild abduction of the injured limb can not be close to the chest wall. If the elbow is attached to the chest, the palm cannot touch the opposite shoulder at the same time (Dugas sign, that is, the shoulder test is positive). The upper arm is placed on the outside of the upper arm to simultaneously contact the acromion and the external iliac crest (straight rule test). X-ray examination can determine the type of dislocation and determine the presence or absence of fracture.

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