According to the Mathes and Nahai classification, sartorius is:
A. A Type I muscle flapA Type IV muscle flap. The supply is segmental, and this is of relevance when using this flap such as for coverage of the femoral vessels during groin lymphadenectomy with a ‘sartorius switch’. Some have suggested the proximal part of this flap is not viable during the switch procedure which simply scars and fibroses.