If the patient has short thighs and long calves, it may be due to the following reasons: 1. It may be due to genetic factors, i.e., the patient’s immediate family members have this condition due to genetic factors. 2. This is a physiological condition, not a disease. 2. This condition may be caused by damage to the epiphysis. For example, if the epiphysis around the thigh is damaged when the patient is growing, then the growth of the thigh may be delayed. The patient’s epiphysis in the calf area will compensate for more proliferation in order to maintain the patient’s height growth, thus causing the thighs and calves to be out of proportion. 3, this situation is also seen in patients with some hip joint lesions. For example, the patient has congenital hip dislocation, which leads to the length of the thigh is not as long as the original length should have.