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.
By the time they get their approval letter from Social Security, most disability applicants are eligible for back payments of benefits. The number of months of back payments you'll receive will depend on when you applied for SSDI and the date the SSA decided you became disabled (called your âestablished onset date,â or EOD.)