cubitus varus deformity
Introduction
Introduction to elbow varus deformity Elbow varus deformity: due to congenital or acquired factors, the ulnar axis is offset to the inside, and the carrier angle <0° is called elbow varus. Mainly due to trauma caused by tibia fracture, eliminating pain, surgical treatment is an important treatment, the disease generally has a good prognosis. basic knowledge The proportion of illness: 0.005%-0.007% Susceptible people: no specific population Mode of infection: non-infectious Complications: dislocation of the elbow joint elbow joint rigidity
Cause
Elbow varus deformity etiology
(1) Causes of the disease
It is caused by various traumas causing the elbow joint to carry an angle of <0°.
(two) pathogenesis
1. The most common cause of supracondylar fracture of the humerus is about 80% of the total cubitus varus. It has been reported that the incidence of humeral humeral fracture and cubitus varus can reach 30% to 57%. Most scholars believe that the cause is due to fracture. The distal end was tilted to the medial side. Studies have shown that post-fracture reduction is poor, medial bone compression is inserted, and the lateral fracture of the fracture and the distal rotation of the fracture are the main causes of the medial tilt of the distal end of the fracture.
2. Distal humerus separation and internal iliac crest injury This injury is prone to early closure of the epiphysis and cause elbow deformity. It may also cause slow or stop sacral tendon growth due to ischemic necrosis of the humerus and eventually lead to the elbow. turn.
3. The reduction of humeral internal malleolus fracture is also more common, especially in the case of obvious swelling, which may cause failure to reset, or failure to replace gypsum in time.
4. Old elbow dislocation is relatively rare, mostly in the case of more complicated injuries.
Prevention
Elbow varus deformity prevention
First, avoid fractures caused by traumatic factors, and if the fracture occurs, actively treat to avoid deformity.
Complication
Elbow varus deformity complications Complications elbow joint dislocation elbow joint rigidity
First, the dysfunction of the elbow, such as the flexion, extension of the elbow, and the influence of the extract.
Second, the muscle strength is reduced, the muscle tension is reduced: when the muscle is relaxed, the resistance encountered by the active body is reduced, the muscle lacks the expanded muscle belly and the normal toughness and relaxation. The clinical manifestations may vary depending on the location of the lesion. The anterior horn of the spinal cord is accompanied by segmental distribution of muscle weakness, atrophy, no sensory disturbance, and muscle fiber tremor.
Symptom
Elbow varus deformity symptoms Common symptoms Elbow joint extension position... Elbow joint malformation motor dysfunction elbow joint can not flex
The varus angle of the elbow joint is obviously increased, reaching 15°~35°. The triangular joint of the elbow is changed, and the distance between the external malleolus and the olecranon is widened. Generally, the elbow joint activity is normal, but the muscle strength is weakened to varying degrees. The elbow varus angle can be measured from the X-ray photograph.
1. Elbow deformity : that is, after the treatment of the elbow joint injury (or untreated), the varus angle of the elbow joint extension is obviously increased, and the severe one can reach 15° to 35°. Change, the distance between the outer and the eagle mouth is widened.
2. Dysfunction : The general activity of the elbow joint can be basically normal, but the muscle strength is weakened to varying degrees.
3. X-ray photographs can be measured: the elbow varus angle can be measured from the measurement, that is, the angle between the longitudinal axis of the tibia and the longitudinal axis of the ulna. In normal, the elbow joint has a carrying angle of 10° to 15° (ie, it is outside Turned over; when the elbow is inverted, the angle becomes inwardly turned.
Examine
Elbow varus deformity examination
1. Clinical manifestations, elbow deformity: that is, after the treatment of elbow joint injury (or untreated), the varus angle of the elbow joint extension is obviously increased, and the severe one can reach 15° to 35°. The post-triangle relationship changes and the distance between the nephew and the eagle mouth widens.
2. Dysfunction: The general activity of the elbow joint can be basically normal, but the muscle strength is weakened to varying degrees.
3. X-ray photographs can be measured: the elbow varus angle can be measured from the measurement, that is, the angle between the longitudinal axis of the tibia and the longitudinal axis of the ulna. In normal, the elbow joint has a carrying angle of 10° to 15° (ie, it is outside Turned over; when the elbow is inverted, the angle becomes inwardly turned.
Diagnosis
Diagnosis and identification of cubitus varus deformity
Traumatic history, after treatment, the varus angle of the elbow joint is significantly increased, severe cases can reach 15 ° ~ 35 °, three bones after the elbow change, elbow joint function, muscle strength weakened, X-ray Check to confirm and measure the angle.
Generally not confused with other diseases.
