Fracture of inferior 1/3 of ulna with dislocation of radioulnar joint

Introduction of the lower third of the ulna and the dislocation of the lower ankle joint The lower third of the ulna and the lower ankle joint dislocation are also known as the anti-Monts fracture and the Gai's fracture. basic knowledge The proportion of sickness: 0.01%-0.05% Susceptible people: no specific population Mode of infection: non-infectious Complications: radial nerve injury

The cause of lower 1/3 of the ulna and the cause of dislocation of the lower ankle joint

1. Direct external force, such as blow wounds or machine wounds.

2, indirect external force, falling hand support, can cause this fracture. Can be divided into the following three types.

(1) Distal humeral branch fracture combined with ulnar small skull sputum separation:

Both occur in children. This type of damage is light and easy to reset.

(2) The lower third of the humerus fracture:

Mostly horizontal, short and oblique. There is obvious shortening and dislocation of the lower ankle joint. More caused by falling hands. When the forearm is injured in the anterior position, the distal end of the humerus is displaced to the dorsal side, and the person who is injured in the supination position is displaced to the volar side. The latter is more common in clinical practice. This type of injury is heavier. Lower ulnar ligament, triangular cartilage, interosseous membrane injury, ulnar styloid fracture.

(3) The lower third of the radius of the humerus fracture, the lower ankle joint dislocation and the fracture of the radius and ulna or the traumatic curvature of the radius and ulna:

Mostly caused by machine whiplash, the damage may be open injury. In addition to the lower ulnar ligament and triangular cartilage damage, the interosseous membrane injury is also heavier.

Prevention of lower 1/3 of the ulna and fracture of the lower ankle joint

Pay attention to rest, work and rest, life in an orderly manner, and maintaining an optimistic, positive and upward attitude towards life can be of great help in preventing diseases.

Complications of the lower 1/3 of the ulna and the dislocation of the lower ankle joint Complications, radial 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.

The lower third of the ulna fracture combined with the lower ankle joint dislocation symptoms Common symptoms Forearm supination function limited oblique fracture Forearm and wrist pain Forearm Rotation pain Forearm has pronation deformity

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.

Examination of the lower third of the ulna and the dislocation of the lower ankle joint

Diagnosis and diagnosis of the lower third of the ulna and the dislocation of the lower ankle joint

diagnosis

Diagnosis can be performed based on clinical manifestations and examinations.

Differential diagnosis

The disease is mainly caused by traumatic factors. This type of fracture is rare, often combined with other injuries and fractures. There are two main types of fractures that need to be distinguished from this disease:

1. Ulnar fractures;

2, fracture of the tibia.

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