Open reduction of the metacarpophalangeal joint of the thumb

Dislocation of bone and joint has two types of traumatic dislocation and habitual dislocation. Traumatic dislocation is the result of violence directly affecting normal bone joints, such as playing football and rugby. Traumatic dislocation can be divided into upper dislocation and outward dislocation of two arsenic, while habitual dislocation is often the result of congenital abnormality or traumatic dislocation not treated in time. Pathological changes The pathological changes of the dislocation of the bone joint are complete rupture of the patellar ligament, and the pathological change of the lateral dislocation of the bone joint is that the knee joint capsule is avulsed from the attachment of the inner edge of the bone joint. The soft tissue damage is usually wide, and the four heads are The medial part of the dilated section of the tendon membrane: there may be avulsion at the attachment of the medial and femoral medial muscles. The bones and joints are usually dislocated to the outside, and sometimes bone and cartilage debris fall into the knee joint to form a free body. It may also be accompanied by meniscal and medial collateral ligament injuries. Habitual dislocation often contains congenital factors, such as osseointegration of the small bone joint and femoral condyle, knee valgus, etc.: According to the length of the internal and external articular surface of the bone joint, Wiberg divides the bone joint into three types: work type, The length of the articular surface on both sides is equal, and the medial articular surface is slightly depressed; type II, the lateral articular surface is significantly longer than the medial aspect, and the medial articular surface is still concave; type III, the lateral articular surface is parallel, and the medial articular surface is short and convex. Near right angle. Type II bone joints are easily dislocated outward. The safest and most effective treatment for dislocation of the bones is the open reduction. For details on how to treat dislocation of the bones, click on the open reduction. Treatment of diseases: hand traumatic metacarpophalangeal joint dislocation Indication Thumb metacarpophalangeal joint dislocation failure or old thumb metacarpophalangeal joint dislocation. Preoperative preparation Take the positive and lateral X-ray films and prepare the Kirschner wire. Surgical procedure The X-ray lateral radiograph of the thumb shows that the proximal phalanx is off to the dorsal side. Thumb X-ray positive position. When the reduction is performed, the thumb is seen to have soft tissue embedded between the articular surfaces to block the joint from being reset. The soft tissue of the inter-section of the switch, the dislocation joint is easy to reset. The X-ray film shows that the joint has been reset. Stitch the torn joint capsule and skin incision. complication Can be complicated by median nerve injury and flexor tendon rupture.