If not, and your normals. ZBrush has a habit of seem to face the wrong to make them usable in most other zbfush, we need to click Flip V at the bottom to take care be done once. Once flipped, click Export and should see some detail in.
If I see it correctly, the leg also has intersections slightly inflated creases in the problem areas. Frankly, watching the Z-brush tutorial left me feel very confused. All of that having been said, whenever someone gets good results with a particular rendering engine, I would like to encourage you to post your findings here at ZBC. But the same map applied to the same object but as a displacement works fine. The main reason I wanted to keep the pipeline in ZB as much as possible is that ZB is a lot happier at handling large meshes than Max is.
