Obturator Externus
Original Editor - Manisha Shrestha
Top Contributors - Manisha Shrestha, Vidya Acharya and Kim Jackson
Description[edit | edit source]
Origin[edit | edit source]
The Obturator externus (OE) muscle originated from the external bony margin of the obturator foramen in clockwise direction from 12 o'clock around to the 10 o'clock position (right hip viewed from the front) and a few fibres arose from the obturator membrane.[1]
Insertion[edit | edit source]
It formed a musculo-tendinous junction at the level of femoral neck. The fibres passed laterally along the inferior margin of the acetabulum acting like a sling at the inferior part of the neck. The muscle inserted as a cylindrical tendon into the trochanteric fossa with some fibres extending towards the piriformis fossa. [1]
Nerve[edit | edit source]
the posterior branch of the obturator nerve
Artery[edit | edit source]
Function[edit | edit source]
Primary function is to Externally rotate hip during hip flexion.
Acts as Hip stabiliser during hip flexion and internal rotation.
Clinical relevance[edit | edit source]
Assessment[edit | edit source]
Treatment[edit | edit source]
Resources[edit | edit source]
- ↑ 1.0 1.1 Gudena R, Alzahrani A, Railton P, Powell J, Ganz R. The anatomy and function of the obturator externus. Hip International. 2015 Sep;25(5):424-7.
