Causes and care of shoulder joint instability

Due to the failure of the dynamic or static stabilization mechanism to maintain the balance of the glenohumeral joint, the humeral head cannot be maintained in the center of the glenoid, and excessive movement occurs. Including unstable front, unstable rear and multi-directional instability. The shoulder joint consists of the head of the humerus and the scapular glenoid. At any time, only 1/4 of the humeral head forms a joint with the joint. This small and flat glenoid does not provide inherent stability to the humeral head as the acetabulum to the hip joint. Due to the presence of the glenoid labrum, the glenoid is deepened by 50%. The end point of the long head of the biceps brachii tendon is one of the essential components of the glenoid labrum. It stops at the upper end of the joint and gradually merges with the posterior glenoid. The joint lip can be used as a "blocking mold" to prevent the excessive backward rolling of the pus bone. The shoulder joint capsule is loose and weak, and by itself only provides little resistance or stability. The front of the joint capsule is strengthened by the thickened parts or ligaments of the three joint capsules, and these structures are closely integrated with the labrum surrounding the glenoid. Another factor that maintains the stability of the shoulder joint is the action of the ligaments and muscles around the joint. If the stabilization mechanism of the shoulder joint fails, the relative stability of the joint can be destroyed and the shoulder joint may be unstable.

Cause

There are many related causes of shoulder joint instability. Congenital developmental deformities, trauma, and idiopathic shoulder joint instability can all lead to shoulder joint instability. There is no transmission route, and the predisposing population is mainly related to dangerous occupational population and trauma population, and the predisposing factor is mental factor.

Prone crowd

Occupations that often lift joints, such as cleaners, nurses, etc., as well as people with psychological disorders, traumatic injuries, and repeated shoulder joint strains, are the main patients. Cleaners, nurses, and repeated shoulder joint strains are mainly due to long-term repeated shoulder lifting, which can cause shoulder joint instability. The common causes of psychological disorders and traumatic injuries are described in the etiology.

Predisposing factors

Predisposing factors

Failure to fully recover after dislocation

Failure to fully recover after dislocation is the main predisposing factor of this disease, especially patients with habitual dislocation, who have not undergone formal rehabilitation treatment after shoulder dislocation. Incomplete rehabilitation of shoulder dislocation, loose joint capsule, and chronic instability of the shoulder joint are caused.

symptom

The main symptoms of shoulder joint instability include dull shoulder pain, joint instability, snapping sensation, fatigue, numbness, deformity, joint dysfunction, etc. It can also cause complications such as subluxation or dislocation of the shoulder joint, snapping shoulders, and adverse effects on normal life.

Other symptoms

Habitual dislocation is also a symptom of shoulder joint instability. Some patients can move their muscles to make the shoulder joint dislocated. Then you can take it back on your own. Generally, patients with this symptom have a longer course of disease and are less likely to recover.

Daily care

Pay attention to whether the drainage tube is unobstructed: avoid squeezing. The drainage volume on the first day after surgery is about 300ml. If there is too much or too little, inform the doctor in time.

Pay attention to the side effects of drugs. Some patients may have allergies to topical drugs, such as redness and swelling of the skin. Discontinue the drug and seek medical attention immediately after it occurs.

Appropriate activities: The shoulder joint activities within the normal range can effectively promote the recovery of its functions.

Special considerations

Some patients may have shoulder joint dislocation under normal activities, but cannot reset themselves. They need to seek medical attention in time, which is a special precaution for the care of this disease.

prevention

There are many causes of shoulder joint instability, so there is no special prevention method, mainly to prevent trauma, regular physical examination, and avoid engaging in related dangerous occupations. X-ray or CT examination as soon as possible is the main early screening method.

Precaution

In related high-risk occupations, such as cleaning workers, pay attention to proper exercise of the shoulder joints to avoid long-term lifting that may cause joint instability.

Do a good job of self-protection to avoid shoulder joint trauma. After the trauma, you should go to the doctor for a comprehensive examination to prevent the development of shoulder joint instability.

People with congenital shoulder dysplasia should seek surgery as soon as possible, so as to completely cure the disease.

Keep exercising, avoid keeping the same posture for a long time, and pay attention to your own health.