Muscular lacuna - Misplaced Pages

Lateral compartment of the thigh inferior to the inguinal ligament For other uses, see Lacuna.

The muscular lacuna (Latin: lacuna musculorum) is the lateral compartment of the thigh beneath the inguinal ligament. It is separated from the medial vascular lacuna by the iliopectineal arch. It is occupied/traversed by the iliopsoas muscle, and femoral nerve. The lateral cutaneous nerve of the thigh may pass through the muscular lacuna, or it may pierce the inguinal ligament itself.

References

"lacuna musculorum". TheFreeDictionary.com. Retrieved 2023-06-14.
Gray, Andrew T. (2019). "39 - Lateral Femoral Cutaneous Nerve Block". Atlas of Ultrasound-Guided Regional Anesthesia (3rd ed.). Elsevier. pp. 143–149. doi:10.1016/B978-0-323-50951-0.00039-6. ISBN 978-0-323-50951-0.
Sinnatamby, Chummy S. (2011). Last's Anatomy (12th ed.). p. 326. ISBN 978-0-7295-3752-0.

Muscles and ligaments of abdomen and pelvis

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

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

Gluteal muscles Maximus Medius Minimus Tensor fasciae latae
Lateral rotator group:	Quadratus femoris Inferior gemellus Superior gemellus Internal obturator External obturator Piriformis

Femoral sheath Femoral canal Femoral ring Adductor canal Adductor hiatus Muscular lacuna
Fascia lata	Iliotibial tract Lateral intermuscular septum of thigh Medial intermuscular septum of thigh Cribriform fascia

Superficial	Triceps surae Gastrocnemius Soleus Accessory soleus Achilles tendon Plantaris
Deep	tarsal tunnel Flexor hallucis longus Flexor digitorum longus Tibialis posterior Popliteus

Pes anserinus
Intermuscular septa	Anterior Posterior Transverse

Dorsal	Extensor hallucis brevis Extensor digitorum brevis
Plantar	1st layer Abductor hallucis Flexor digitorum brevis Abductor digiti minimi 2nd layer Quadratus plantae Lumbrical muscle 3rd layer Flexor hallucis brevis Adductor hallucis Flexor digiti minimi brevis 4th layer Dorsal interossei Plantar interossei
Fascia	Plantar fascia retinacula Peroneal Inferior extensor Superior extensor Flexor

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