Long and short legs, also known as unequal length of both lower limbs, are caused by femoral head collapse, which can be restored to normal after surgery.
Collapse of femoral head is a stage of femoral head necrosis, after the femoral head collapses and absorbs, the femoral head becomes smaller and the length of the limb becomes shorter, resulting in the limb on the affected side becoming shorter and the limb on the healthy side becoming longer, thus unequal lengths occur. Artificial joint replacement is used to make the lengths of the lower limbs of the two limbs return to equal lengths, and the hip joints have normal movement and normal walking posture at this time.
If you are diagnosed with unequal length of both lower limbs caused by femoral head collapse, it is recommended that you go to the hospital in time for standardized treatment under the guidance of the doctor in order to reduce the adverse effects of the disease.