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.
When Your Benefits Will Be Paid. Social Security makes payments in arrears, which means that when you receive a check, it is for the previous month. The only time this will probably have an impact on you is when you are waiting for your first check to come. Your payment date depends on whether you receive SSI or SSDI.eep in mind that for Social Security Disability Income (SSDI), there is a mandatory five-month waiting period from the date that Social Security determines your disability began (your onset date) to when your monthly payments can start.