Muscular lacuna

{{short description|Lateral compartment of the thigh inferior to the inguinal ligament}}

{{Other uses|Lacuna (disambiguation){{!}}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.{{Cite web |title=lacuna musculorum |url=https://medical-dictionary.thefreedictionary.com/lacuna+musculorum |access-date=2023-06-14 |website=TheFreeDictionary.com}} The lateral cutaneous nerve of the thigh may pass through the muscular lacuna,{{Cite book |last=Gray |first=Andrew T. |title=Atlas of Ultrasound-Guided Regional Anesthesia |publisher=Elsevier |year=2019 |isbn=978-0-323-50951-0 |edition=3rd |pages=143–149 |language=en |chapter=39 - Lateral Femoral Cutaneous Nerve Block |doi=10.1016/B978-0-323-50951-0.00039-6 |chapter-url=https://www.sciencedirect.com/science/article/pii/B9780323509510000396}} or it may pierce the inguinal ligament itself.{{Cite book |last=Sinnatamby |first=Chummy S. |title=Last's Anatomy |publisher= |year=2011 |isbn=978-0-7295-3752-0 |edition=12th |pages=326}}