{"id":1611,"date":"2020-08-14T11:26:33","date_gmt":"2020-08-14T11:26:33","guid":{"rendered":"https:\/\/meddists.com\/learn\/pre-clinical\/anatomy\/abdomen-and-pelvis\/structures-and-regions\/subinguinal-hiatus\/"},"modified":"2022-09-09T22:31:43","modified_gmt":"2022-09-09T20:31:43","slug":"subinguinal-hiatus","status":"publish","type":"page","link":"https:\/\/meddists.com\/learn\/pre-clinical\/anatomy\/abdomen-and-pelvis\/structures-and-regions\/subinguinal-hiatus\/","title":{"rendered":"Subinguinal hiatus and femoral canal"},"content":{"rendered":"\n

The subinguinal hiatus is an opening formed between the hip bone and the inguinal ligament that functions as a passage from the abdomen and pelvis into the thigh.<\/div><\/p>\n\n\n\n
\"\"<\/a>
The subinguinal hiatus<\/strong><\/figcaption><\/figure>\n\n\n\n

Borders<\/h3>\n<\/span>\n\n\n
  • Superior <\/strong>(roof) \u2014 Inguinal ligament<\/li>
  • Inferior <\/strong>(floor) \u2014 The iliac bone below the ASIS, the superior pubic ramus and pectineus muscle<\/li><\/ul>\n\n\n<\/span>\n

    Divisions<\/h3>\n<\/span>\n\n\n

    The subinguinal hiatus is divided into three compartments (lacunae):<\/p>\n\n\n\n

    • Lacuna musculonervosa<\/strong> (musculo-nervous compartment)<\/li>
    • Lacuna vasorum<\/strong> (vascular compartment)<\/li>
    • Lacuna lymphatica\u00a0<\/strong>or herniosa<\/strong> (lymphatic compartment)<\/li><\/ul>\n\n\n\n

      Some authors group the lacuna vasorum and lymphatica together as a single compartment.<\/p>\n\n\n<\/span>\n

      Lacuna musculonervosa<\/h4>\n<\/span>\n\n\n

      The lateral compartment containing:<\/p>\n\n\n\n

      • Lateral femoral cutaneous nerve<\/li>
      • Iliopsoas muscle<\/li>
      • Femoral nerve<\/li><\/ul>\n\n\n<\/span>\n

        Lacuna vasorum<\/h4>\n<\/span>\n\n\n

        The middle compartment containing:<\/p>\n\n\n\n

        • Femoral artery (lateral)<\/li>
        • Femoral vein (medial)<\/li>
        • Femoral branch of the genitofemoral nerve<\/li><\/ul>\n\n\n<\/span>\n

          Lacuna lymphatica (herniosa)<\/h4>\n<\/span>\n\n\n

          The medial compartment containing lymphatic vessels.<\/p>\n\n\n\n

          • The lacuna lymphatica forms the\u00a0inlet of the femoral canal known as the femoral ring<\/strong>.<\/li>
          • The Rosenm\u00fcller node (or Cloquet\u2019s node) is an important inguinal lymph node located within the femoral ring.<\/li>
          • The name herniosa derives from the fact that this is a potential location for a herniation.<\/li><\/ul>\n\n\n\n

            The lacuna vasorum and lacuna lymphatica are engulfed by the femoral sheath.<\/p>\n\n\n<\/span>\n

            Femoral ring and femoral canal<\/h3>\n<\/span>\n\n\n

            The femoral ring is the inlet of the femoral canal<\/strong>, a potential space spanning from the femoral ring down to the saphenous opening (hiatus\/oval fossa).<\/p>\n\n\n\n

            Superior<\/td>Inguinal ligament<\/td><\/tr>
            Inferior<\/td>Pectineal fascia
            Pubic bone (superior ramus)<\/td><\/tr>
            Medial<\/td>Lacunal ligament<\/td><\/tr>
            Lateral<\/td>Femoral vein<\/td><\/tr><\/tbody><\/table>
            Table 1.<\/strong> Borders of the femoral ring.<\/figcaption><\/figure>\n<\/span>

            Borders<\/h3>

            Divisions<\/h3>

            Lacuna musculonervosa<\/h4>

            Lacuna vasorum<\/h4>

            Lacuna lymphatica (herniosa)<\/h4>

            Femoral ring and femoral canal<\/h3><\/div>","protected":false},"excerpt":{"rendered":"

            Borders Superior (roof) \u2014 Inguinal ligament Inferior (floor) \u2014 The iliac bone below the ASIS, the superior pubic ramus and pectineus muscle Divisions The subinguinal hiatus is divided into three compartments (lacunae): Lacuna musculonervosa (musculo-nervous compartment) Lacuna vasorum (vascular compartment) Lacuna lymphatica\u00a0or herniosa (lymphatic compartment) Some authors group the lacuna vasorum and lymphatica together as a single compartment. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":1605,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1611","page","type-page","status-publish","hentry"],"yoast_head":"\nSubinguinal hiatus and femoral canal – Meddists<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/meddists.com\/learn\/pre-clinical\/anatomy\/abdomen-and-pelvis\/structures-and-regions\/subinguinal-hiatus\/\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" 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