Congenital elbow joint fusion

　　This disease is a rare congenital disease, the pathogenesis of which is not yet clear. It is generally believed that around the 5th week of embryonic development, the mesenchymal cartilage of the trunk develops and matures, forming the ulna and radius during the process, due to the proximal non-separation.

　　1, This disease can occur alone or be associated with other diseases, such as the absence of the ulna, carpal, metacarpal, or phalangeal fusion or absence.

　　In some non-pure osseous fusion deformities, in addition to skeletal deformities, there may also be fascial tissue contraction, abnormal fiber direction, narrowing of the interosseous membrane, abnormal or absent supinator muscle.

　　Stiffness of the joint can occur in the humeroradial, humeroulnar, or ulnar joint. If there is fusion of the humeroulnar or humeroradial joint, there is often a lack of the radius or ulna.
　　In the neonatal period, joint fusion may be chondral and not visible on X-rays. As the child grows and ossifies, the fusion of the elbow joint can be displayed on X-rays. The fusion of the elbow joint can be displayed on X-rays.
　　The degree of loss of elbow joint function is related to the fixed position of the elbow joint fusion, and the underdevelopment or absence of the glenoid of the shoulder joint or the humeral head can worsen the deformity and instability of the shoulder joint.

　　This is a congenital disease with no effective preventive measures. Early diagnosis and treatment are the key to the prevention and treatment of the disease. However, attention should be paid to not delaying the surgical treatment time for children to prevent muscle atrophy due to disuse.

　　1. Stiffness of the joint can occur in the humeroradial, humeroulnar, or humerus-ulna joint. If there is fusion of the humerus-ulna or humeroradial joint, there is often a lack of the radius or ulna.

　　2. In the neonatal period, joint fusion may be chondral and not visible on X-rays. As the child grows and ossifies, the fusion of the elbow joint can be displayed on X-rays. The degree of loss of elbow joint function is related to the fixed position of the elbow joint fusion, and the underdevelopment or absence of the glenoid of the shoulder joint or the humeral head can worsen the deformity and instability of the shoulder joint.

　　Increase the intake of high-fiber foods as well as fresh vegetables and fruits, maintain a balanced diet including proteins, sugars, fats, vitamins, trace elements, and dietary fibers, and make full use of the complementary effects of nutrients between foods.

　　Precautions before treatment of congenital elbow joint fusion:

　　1. In terms of treatment, if the patient has contraction function of the biceps brachii and triceps brachii, artificial joint replacement can be considered.

　　2. For those with unilateral elbow joint fusion, the forearm can be fixed in a functional position through osteotomy to partially restore the function of the right elbow joint and daily living ability. For those with affected contralateral elbow joint, elbow joint arthroplasty can be considered. For those without epiphysis of the elbow joint, osteotomy correction can be considered up to school age to prevent muscle atrophy due to disuse.