There are two types of leg discrepancies: Apparent and True let discrepancies

An 'apparent leg discrepancy' is caused by muscle imbalances and/or joint restrictions or hypermobility.

A 'true leg discrepancy' is caused by an actual difference in length of the bones in the lower leg, pelvis or thigh bone.

Diagnosing a true leg discrepancy is done by getting an Xray of the leg bones and then measuring and comparing the bones on both sides.

Physiotherapists have clinical tests that they can use to determine whether or not you have an apparent leg length difference or a true leg length difference. The big thing that we look for in that is that lots of the activities of daily living that we do are very repetitive. So, for a lot of people, they sit in their job, they come home, they sit to watch TV, they sit to read. So, they do a lot of sitting during the day, and that starts to get muscle imbalances.