New wrapping surfaces for Gluteus Maximus.

Each muscle element has its own wrapping cylinder (in red). The cylinders are aligned to match the overall muscle shape, and constructed to follow the underlying pelvis bone geometry. Figure a. (from posterior) show all the wrapping surfaces of the 12 strands of the muscle, while figure b. (sagittal) highlights a single cylinder for the most distal strand of the Gluteus Maximus Inferior.