Patients with hip dysplasia will have a series of gait abnormalities when walking, the common situation is as follows: 1, may appear lameness, the so-called lameness is what the people call a limp, often the patient’s hip dysplasia on one side of the hip joint causes abnormal activities of the hip joint during walking, and there can be pain on one side of the hip, at this time, the patient will take a limp to alleviate this situation This kind of gait; 2, may appear waddling gait, waddling gait clinical also known as duck gait, can be understood as walking like a duck, that is, walking with the body swaying from side to side, and there will be abnormal twisting of the hips, such patients are often caused by the above-mentioned lesions in both hip joints, which leads to abnormal hip activities, and there is a serious lack of muscle strength around the hip joint; 3, the patient may show If the hip joint is severely dysplastic, the patient may lose the weight-bearing function of the lower limbs and be unable to walk.