How is the obturator nerve formed?
The obturator nerve is formed from the lumbar plexus. It receives fibres from the anterior divisions of L2, L3 and L4. After its formation, the obturator nerve descends through the fibres of the psoas major and emerges from its medial border.
What makes up the obturator nerve?
The obturator nerve is one of the largest branches of the lumbar plexus. It is a mixed nerve which arises from the ventral (anterior) rami of the spinal nerves L2-L4. Motor: Adductor longus, adductor brevis, gracilis, obturator externus and ischiocondylar part of adductor magnus muscle.
What is a obturator in anatomy?
Introduction. The obturator nerve arises from the lumbar plexus and provides sensory and motor innervation to the thigh. This nerve provides motor innervation to the medial compartment of the thigh and as a result, is essential to the adduction of the thigh.
What is the obturator foramen formed by?
The obturator foramen is the large opening created by the ischium and pubis bones of the pelvis through which obturator nerve and blood vessels pass.
What plexus does the obturator nerve originate from?
The obturator nerve arises from the lumbar plexus and provides sensory and motor innervation to the thigh. The obturator nerve : Provides motor innervation to the medial compartment of the thigh.
What is the correct origin and termination for the obturator nerve?
The obturator nerve originates from the anterior divisions of the L2, L3, and L4 spinal nerve roots. It descends through the fibers of the psoas major, and emerges from its medial border near the brim of the pelvis.
Which plexus contains the obturator nerve?
lumbar plexus
The beginning of your obturator nerve (nerve root) is in your lumbar plexus. The lumbar plexus is a network of nerves that enables movement and sensation (innervation) in your lower limbs. These include your upper and lower leg along with your foot.
Where is the obturator located?
Description. The obturator internus is the deep muscle of hip joint which is part of lateral wall of pelvis. It is found in the superior inner side of the obturator membrane.
Where is obturator nerve found?
The obturator nerve is derived from L2-4 and travels along the medial border of the psoas muscle; it is both a motor and a sensory nerve. It travels through the obturator foramen with the obturator artery and vein into the thigh. The obturator nerve divides into anterior and posterior branches.
How do you test the obturator nerve?
Currently, an obturator nerve injury is diagnosed via physical examination and imaging studies [including magnetic resonance imaging (MRI), computed tomography (CT), or ultrasonography]. However, these techniques are not always effective in detecting nerve injuries (1).
What structures make up the obturator foramen?
The obturator foramen (Latin foramen obturatum) is the large opening created by the ischium and pubis bones of the pelvis through which nerves and blood vessels pass.