Causes. Leg length discrepancies can be caused by poor alignment of the pelvis or simply because one leg is structurally longer than the other. Regardless of the reason, your body wants to be symmetrical and will do its best to compensate for the length difference.
Date of Onset. When the Social Security Administration (SSA) refers to a disability applicant's Date of Onset, they are referring to the date that a Social Security Disability applicant became disabled. When you fill out your Social Security Disability claim forms, you will be asked to provide the date your disability began.
Under current law, people are eligible for Social Security Disability Insurance (DI) until they reach the full retirement age, which is currently 66 and is scheduled to increase gradually beginning in 2017 for those born in 1955 until it reaches 67 for workers born in 1960 or later.