How to fix a very distorted mesh after having imported a BVH file with the Manuel Bastioni Lab I've been all day working with the corrective shapekeys. I've understood how they works : I need to modify the mesh manually with the proportional editing and then I should create a shapekey with the mesh modified correctly,BUT what I'm not able to do is to fix the legs of my character,because they became very damaged after that I have imported a BVH file. I tried to modify them with the proportional editing tool,but the job done is not good,since its difficult to alter carefully the mesh,especially behind the knee. Any suggestion ? Is there a way to fix it decently ? thanks. image attached.
Other than proportional edit, the following techniques might be handy.


Move vertecies along normal :Alt+S
Smooth Mesh : Tool shelf > Mesh Tools > Deform: Smooth Vertex
To Sphere : Alt+Shift+S
Shrink Wrap Modifier (use vertex group to specify vertecies)


Hope they help.