This occurs for a variety of reasons but mostly commonly result from either a structural difference in the length of the bones in our legs or from soft tissue restrictions/tightness that cause the shortening of one limb compared to the other. This causes adaptions to the way we walk and increased impact pressure to the joints of the body.
Limb length difference is easily observed by the trained eye. Podiatrists trained in this area will review you both standing and lying flat. They are able to identify within a few millimetres if a difference exists and whether it is necessary to treat the difference.
The standard treatment for this condition is an in-shoe raise or soft orthotic device (innersole). Only limb length differences exceeding 15-20mm require an external build up on the shoes, therefore this can be avoided in most cases.
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