Patellar abrasion of X-leg is mostly caused by repeated friction of leg deformity, and its treatment needs to be considered according to the specific conditions of the patients, such as binding band binding, surgical correction, etc., as follows: 1. Binding: If children or infants who are still in the stage of growth and development are found to have signs of X-shaped leg and patella injury is found during repeated rubbing, binding is needed to correct X-shaped leg. 2. Surgical correction: If the patient’s bone growth is basically shaped, due to the usual large amount of activity, walking in the process of repeated friction caused by patella damage need to perform surgery to correct the leg to prevent wear and tear aggravation of the treatment, need to be actively eliminated before the surgery to treat the infection, avoid the lower limb activities after the operation, to be completely recovered until the bone tissue to return to normal activities. The patient needs to go to the hospital, follow the doctor’s instructions to improve the relevant examination and treatment.