Fracture of the lower third of the radial shaft with dislocation of the radioulnar joint

Introduction

Brief introduction of the lower third of the humeral shaft fracture combined with the dislocation of the lower ankle joint In 1929 the French called it an anti-Monts fracture. Galaezzi described this damage in detail in 1934 and was later called the Gai's fracture. The incidence of this injury is six times higher than the Monteggia fracture. The examination of this disease is mainly image examination. The X-ray examination should include the wrist joint, the dislocation of the ulnar joint, the type of fracture and the direction of displacement. For some patients who may have nerve injury, nerve-muscle can also be performed. Electrographic examination, etc. X-ray examination: It is very important to keep the wrist joint in the true lateral position when filming. Only when the boat is at this position, the lunar bone overlaps with the triangular bone, and the distal end of the radius and ulna overlaps to determine whether the lower ankle joint is dislocated or Whether the distal end of the ulna is displaced, if necessary, can be compared on both sides of the ulnar or before and after the reduction to prevent missed diagnosis. basic knowledge The proportion of illness: 0.003% Susceptible people: no special people Mode of infection: non-infectious Complications: radial nerve injury ulnar nerve injury median nerve injury

Cause

The lower third of the humeral shaft fracture combined with the cause of dislocation of the lower ankle joint

(1) Direct violence

Violence directly affects a part of the bone and causes fractures in the part, which often causes fractures in the injured area, often accompanied by varying degrees of soft tissue destruction. If the wheel hits the calf, a fracture of the humerus shaft occurs at the impact.

(2) Indirect violence

Indirect violence causes fractures in the distance through longitudinal conduction, leverage or torsion. When the foot falls from a height, the trunk flexes forward rapidly due to gravity, and the vertebral body at the junction of the thoracolumbar spine is subjected to folding force. The role of compression fracture (conduction).

(3) Accumulative strain damage

Long-term, repeated, mild direct or indirect injury can cause a specific part of the limb to fracture, such as long-distance marching to cause the second, third metatarsal and the lower third of the humerus fracture.

Prevention

Prevention of the lower third of the humeral shaft fracture combined with the lower ankle joint dislocation

The disease is caused by traumatic factors, so pay attention to production and life safety, avoid trauma, and ensure personal safety is the key to prevent this disease. In addition, it should be noted that for patients undergoing treatment, functional exercise should be performed early in order to restore the function of the affected limb as soon as possible.

Complication

Complications of the lower third of the humeral shaft fracture combined with the lower ankle joint dislocation Complications, radial nerve injury, ulnar nerve injury, median nerve injury

The disease is caused by traumatic factors, because the blood vessels and nerves are distributed in the fracture, so the disease is easy to have a median nerve or ulnar nerve, radial nerve injury. Interosseous membrane damage is also more serious. Poor healing in the late stage can cause deformity of the hand and affect the rotation function of the arm.

Symptom

The lower third of the humerus fracture combined with the lower ankle joint dislocation symptoms common symptoms simple fractures exposed bone fractures shoulder joint movement limited butterfly fracture

Patients with this disease are not significantly displaced, only pain, swelling and tenderness, and forearm rotation activity is limited. Apparent shift, the humerus appeared short and angular deformity, the lower ankle joint tenderness, ulnar head bulging. X-ray films showed a transverse or short oblique fracture at the junction of the lower third of the humerus. If the fracture of the humerus fracture is obvious, the lower ankle joint will be completely dislocated. On the anterior and posterior radiographs, the humerus is shortened, the distance between the distal and the ulna is reduced, and the humerus is close to the ulna. On the lateral position, the humeral head is angled to the volar side, and the ulnar head protrudes toward the dorsal side.

Examine

Examination of the lower third of the humeral shaft fracture combined with the dislocation of the lower ankle joint

The auxiliary examination method for this disease is mainly X-ray examination:

X-ray films showed a transverse or short oblique fracture at the junction of the lower third of the humerus. If the fracture of the humerus fracture is obvious, the lower ankle joint will be completely dislocated. On the anterior and posterior radiographs, the humerus is shortened, the distance between the distal and the ulna is reduced, and the humerus is close to the ulna. On the lateral position, the humeral head is angled to the volar side, and the ulnar head protrudes toward the dorsal side.

Diagnosis

Diagnosis and diagnosis of the lower third of the humeral shaft fracture combined with the lower ankle joint dislocation

Diagnosis can be based on the cause, symptoms and related tests.

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