Elbow valgus increased

Introduction The elbow valgus is characterized by an increase in the elbow valgus angle when the elbow is extended. When the normal elbow joint is fully extended, there is a mild valgus male about 10° and a female about 15°. This valgus angle is called a carrying angle. If this angle is increased, the forearm is too abducted, called the elbow valgus deformity. The most common cause of elbow valgus is a supracondylar fracture of the humerus and a distal radius fracture in a child who has not been reset or has a poor reduction. Elbow valgus can be caused by failure of timely reduction or reduction of the medial or lateral humeral fractures of the humerus, lateral closure of the tibia, or ischemic necrosis of the humerus and dislocation of the elbow without proper reduction or reduction.

Cause

The causes of this disease include the following:

1. Children with unconformed or poorly displaced humeral supracondylar fractures and distal radius fractures are the most common causes of elbow valgus deformity. The reason is the uneven growth of the medial and lateral sides of the distal radius.

2. Children with internal and external iliac fractures failed to be reset or poorly restored, humeral epiphysis, early closure or ischemic necrosis may cause elbow valgus; temporomandibular fracture caused by elbow valgus is due to excessive growth of tibia .

3. Dislocation of the elbow joint without poor reset or reset.

4. After the humeral head resection: the cause of elbow valgus is due to the disappearance of the important mechanical barrier of the proximal humerus after removal of the humeral head, which causes abnormalities in the biomechanics of the elbow joint and forearm.

an examination

Related inspection

Joint examination of bone and joint soft tissue CT

1, elbow appearance deformity, often asymptomatic. When the elbow joint is in the straight position, the elbow valgus angle is increased to more than 30°; the elbow joint activity generally has no obvious obstacle; the joint surface damage of the late elbow joint can cause pain.

2. For patients with severe valgus, due to the high tension tension of the ulnar nerve, or the friction caused by ulnar nerve adhesion after trauma, delayed ulnar neuritis may occur and ulnar nerve injury may occur. That is, unconsciously, the tingling and sensory disturbances in the innervation of the hand ulnar (half finger and ring finger) occur, and the inner muscles of the hand are weak and atrophic.

3, engaged in heavy physical labor, can occur elbow joint osteoarthritis.

Differential diagnosis

Flexion deformity in the hips, knees, and elbows: Children with congenital nephrotic syndrome have special appearances: common appearances after birth, such as low nasal bridge, wide eye distance, low ear, cranial suture width, anterior and posterior iliac crest Wide, it is also common in the hip, knee, elbow flexion deformity. Later, abdominal distension, ascites, and umbilical hernia are common.

Elbow joint can not flex: When the elbow flexion of the elbow or the joint dislocation, the elbow joint can not flex, the forearm is straight and drooping, and the upper limb can not do the life movement of the flexion forearm, such as not washing the face, eating, etc.

Immediately after the dislocation of the elbow, the patient feels severe pain and cannot flex the elbow joint, and swelling can occur.

Abdominal elbow swelling and dysfunction: half of the radial head fracture is also called Hahn-steinthal fracture, symptoms and signs: elbow lateral swelling, elbow flexion and extension dysfunction. Abdominal elbow swelling, elbow flexion and extension dysfunction, passive flexion and extension local pain increased, elbow fossa tenderness, longitudinal forearm slamming humeral head pain. X-ray films showed that the fracture occurred at the base of the humeral head, the fracture line was on the coronal plane, and the fracture block was displaced upward or with rotational displacement.

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