The most common reasons for the inability to squat with legs together are hip dislocation, hip synovitis, gluteal myoclonus, etc. If the symptoms persist, it is recommended to seek medical treatment in time. 1. Hip dislocation: usually the acetabulum wraps around the head of the femur, when the patient is dislocated due to external violent factors, the patient will experience severe pain in the hip, and may also be unable to squat with legs together. 2. Hip synovitis: due to infection, trauma and other factors, resulting in inflammation of the synovial membrane of the hip joint, there will be pain in the hip joint as well as redness and swelling, and may be accompanied by the inability to squat with the legs together. 3. gluteal myoclonus: usually related to trauma, heredity and other factors, the patient’s hip muscles, fascia deformation, necrosis, it is easy to cause the patient’s hip weakness, and then the legs together can not squat. Cause legs together can not squat more reasons, may also be related to osteoarthritis, infection, hip dysplasia and other reasons, it is recommended to promptly go to the hospital to identify the cause of the disease, targeted treatment.