IRCT20190718044261N1 IRCT 2019-10-11 Fund for the Protection of Researchers and Technologists of the Country Effect of foot insoles and exercise program on subjects with Leg Length Discrepancy (LLD) Effect of Two Types of Shoe Insole and Exercise Program on the Dynamics of Lower Extremities Joints in the Disabled with Leg Limb Length Discrepancy during Stance Phase of Walking 2018-09-23 anticipated 34 Complete https://irct.ir/trial/40995 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention, Randomization description: In this method, all participants in the study were assigned a number, and then they were selected using the lottery for each group. N/A Leg Limb Length Discrepancy. Intervention 1: First Intervention group: The intervention in this group involves the use of internal insole for Shortness of leg compensation for twelve weeks. The height of the insole in the heel area is equal to the length difference of two legs and does not have a high in the toe area and made of a semi-rigid material. Intervention 2: Second Intervention group: The intervention in this group involves the use of external insole for shortness of leg compensation for twelve weeks. The height of the insole in the heel to toe area is equal to the length difference of two legs and made of a semi-rigid material. Intervention 3: Third intervention group: The intervention in this group involves the use of exercise for twelve weeks. In subjects with short leg limbs due to lateral pelvic tilt, weakness hip abductors, shortness of iliopsoas muscle, muscle weakness lumbar muscles and the shorten of Plantar flexor muscles in short leg, exercise program with an emphasis on weakened muscle strength and stretch the muscles shortened. No - There is not a plan to make this available Justification or reason for not sharing IPD is Data will only be presented in general and in the results of the report of the study.