Obturator externus muscle
Disclosures
- updated 27 Nov 2022:
Nothing to disclose
Updates to Article Attributes
Body
was changed:
The obturator externus is a flat, triangular muscle, which covers the outer surface of the anterior wall of the pelvis.
Summary
origin: external surface of obturator membrane and adjacent bone (inferior pubic ramus and the ramus of the ischium)
insertion: trochanteric fossa of femur
action: laterally rotates thigh at the hip-
arterialblood supply: obturatorarteryand medial circumflex femoral arteries innervation: obturator nerve (L2 - L4)
action: thigh external rotation, stabilisation of hip joint
-<li>-<strong>origin</strong>: external surface of obturator membrane and adjacent bone (inferior pubic ramus and the ramus of the <a href="/articles/ischium">ischium</a>)</li>-<li>-<strong>insertion</strong>: trochanteric fossa of <a href="/articles/femur">femur</a>-</li>-<li>-<strong>action</strong>: laterally rotates thigh at the hip</li>-<li>-<strong>arterial supply</strong>: <a href="/articles/obturator-artery">obturator artery</a>-</li>-<li>-<strong>innervation</strong>: <a href="/articles/obturator-nerve">obturator nerve</a>-</li>- +<li><p><strong>origin</strong>: external surface of obturator membrane and adjacent bone (inferior pubic ramus and the ramus of the <a href="/articles/ischium">ischium</a>)</p></li>
- +<li><p><strong>insertion</strong>: trochanteric fossa of <a href="/articles/femur">femur</a></p></li>
- +<li><p><strong>blood supply</strong>: <a href="/articles/obturator-artery">obturator </a>and <a href="/articles/medial-circumflex-femoral-artery" title="Medial circumflex femoral artery">medial circumflex femoral</a> arteries</p></li>
- +<li><p><strong>innervation</strong>: <a href="/articles/obturator-nerve-1">obturator nerve</a> (L2 - L4)</p></li>
- +<li><p><strong>action</strong>: thigh external rotation, stabilisation of hip joint</p></li>
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