Muscular lacuna

The muscular lacuna (Latin: lacuna musculorum) is the lateral compartment of the thigh inferior to the inguinal ligament, for the passage of the iliopsoas muscle, the femoral nerve and the lateral cutaneous nerve of the thigh; it is separated by the iliopectineal arch from the vascular lacuna.

Muscles and ligaments of abdomen and pelvis

Abdominal wall

Anterior/
lateral

Muscle

Fascia

Abdominal fascia panniculus adiposus Fascia of Camper Membranous layer Fascia of Scarpa Transverse fascia Interfoveolar ligament Linea alba Linea semilunaris

Inguinal	Inguinal triangle Inguinal canal Deep inguinal ring Superficial inguinal ring Intercrural fibers Crura of superficial inguinal ring Inguinal ligament Pectineal ligament Lacunar ligament Reflected ligament

Posterior

Muscle	quadratus lumborum Iliopsoas psoas major psoas minor iliacus

Fascia	Iliac fascia Iliopectineal arch

Pelvis

Muscle	levator ani iliococcygeus pubococcygeus puborectalis coccygeus rectococcygeus

Fascia	pelvic fascia Visceral Rectovaginal fascia Rectoprostatic fascia Parietal Obturator fascia Tendinous arch Piriformis fascia floor superior fascia Pubovesical ligament Puboprostatic ligament inferior fascia Anococcygeal body

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