What's the best approach for modeling imported human lower limbs?

For example, we scan the deformed leg (the leg is deformed due to the consequences of certain diseases).

How would I define a new local coordinate system on a deformed leg in Solidworks and then relative to that local coordinate system modify the leg surface until it is in the correct ("healthy") position, without losing the basic geometry and dimensions? Is this even possible, or is there any alternative to this?

Some examples:

- rotate and move the legs

- leveling the feet...