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The extrapelvic part of the LFCN runs in a fatty tissue layer between the sartorius and tensor fasciae latae muscles directly under the subcutaneous fascia. It crosses the sartorius origin next to the ASIS. Incising the fascia over the tensor muscle (dotted line) and holding the muscle laterally offer the best protection of the main branch of the LFCN during the deeper approach distal to the ASIS. When present, the lateral branch has to be cut.
