Etiology.
Trauma is common.
When the upper extremity falls or is impacted in the abducted and externally rotated position, the violence is transmitted through the own bones and eventually leads to shoulder dislocation.
Dislocation of the shoulder joint can also occur when the upper extremity falls in the posterior extension position or when the humerus is directly impacted on a hard object from above.
According to the direction of humeral (gōng) head dislocation, it can be divided into four types: anterior, posterior, superior and inferior dislocations, with anterior dislocation being the most common.
Clinical manifestations.
There is a history of injury; shoulder pain, swelling, and impaired shoulder joint movement; there may be a special posture of the healthy side hand holding the affected forearm, head tilted to the affected side, and a square shoulder deformity. When the patient presses the affected elbow against the chest wall, the palm of the hand cannot rest on the healthy shoulder, or when the palm of the hand rests on the healthy shoulder, the elbow cannot rest on the chest wall (Dugas sign).
Treatment: local anesthesia followed by manual repositioning + external fixation.
Rehabilitation exercises.
Must move wrist and fingers during immobilization (3-4 weeks)
After release from immobilization: exercise the shoulder joint and its adjacent muscle groups.
Static exercise with continuous muscle contraction without movement.
1)leaning against the wall, keeping the elbow at an angle of 90 degrees
2)Rest the outer side of the forearm against the wall.
3) Against the wall, contract the muscles, but do not move the shoulders.
4)Hold for 5 seconds, repeat 5 times.
5) Turn 180 degrees so that the inside of the forearm is against the wall.
6) Repeat step 2C5, 5 times.
Active exercise.
1)Bend down and let the affected arm hang by your side.
2)Rock your body back and forth, borrowing the gravity of the arm to make small circles around the postoperative shoulder.
3)Swing the arm clockwise and counterclockwise in this way.
Passive exercise.
It works better with physical therapy massage. Exercise should be gradual and not adventurous. Please look forward to the video instruction.