Inward bending of the thighs is considered to be caused by knee valgus, arthritis, osteoporosis and other factors, and common treatments include orthopedic braces, medication, surgery and so on. 1. Knee valgus: also known as “X-shaped leg”, legs together when standing upright, knees can be contacted, thighs bent inward, calves tilted outward. The treatment can be corrected by orthopedic support or cast, and serious knee valgus can be surgically implanted with internal fixator, and the internal fixator will be removed after the deformity is corrected in about 2 years. 2. Arthritis: Arthritis in the hip or knee joints can make the thighs bend inward and cause pain. Antipyretic and analgesic medicines, such as ibuprofen, can be taken to relieve pain and improve the inward bending of the thighs. 3. Osteoporosis: Incomplete development of the leg bones may be caused by calcium deficiency, resulting in inward bending of the thighs, which can be treated with Calcium Carbonate D3. There may be other reasons for the inward bending of the thighs, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or treatment. The above medication is recommended to be taken under the guidance of a doctor.