The obturator nerve comes from the lumbar plexus and innervates the thigh with sensory and motor innervation. In the thigh, the obturator nerve is responsible for providing motor innervation to the medial compartment.
Where does the obturator nerve begin and end?
A branch of the obturator nerve (located at L2, L3, and L4) descends into the psoas major and exits from the medial border of the muscle. Afterwards, it goes behind the common iliac vessels and on the lateral side of the ureter before running along the lateral wall of the smaller pelvis, just above and in front of the obturator vessels, before returning to the heart.
What is the correct origin and termination for the obturator nerve?
The obturator nerve is derived from the anterior divisions of the L2, L3, and L4 spinal nerve roots, which are located in the lower back. It descends through the fibers of the psoas major and exits from its medial border at the brim of the pelvis, where it attaches to the iliac crest.
What is the origin and insertion of the obturator externus?
The gluteal area is home to the flat, triangular, paired muscle known as the obturator externus. Muscle of the obturator externus.
|Anterior surface of obturator membrane, bony boundaries of obturator foramen
|Trochanteric fossa of femur
Where is the obturator located?
The obturator internus is a deep hip joint muscle that is a component of the lateral wall of the pelvis. It is responsible for a variety of functions. It is situated on the superior inner side of the obturator membrane, on the superior inner side of the obturator membrane.
Where does the obturator internus muscle originate?
This muscle arises from the inferior edge of the superior pubic ramus as well as from the pelvic surface of the obturator membrane, which are both located in the lower abdomen. Its tendon emerges from the pelvis through the lesser sciatic foramen and inserts onto the greater trochanter of the femur, allowing the thigh to be rotated laterally as a result.
Where does the obturator nerve terminate?
The obturator nerve finishes at the distal aspect of the adductor longus, where it connects with the anterior cutaneous branches of the femoral and saphenous nerves to create a subsartorial plexus.The femoral and saphenous nerves also communicate with the obturator nerve.The nerve then sends out motor branches to the muscles and articular branches to the hip joint, which are both controlled by the spinal cord.
Where does the obturator nerve pass through?
The origins and progression of the problem The nerve travels along the lateral wall of the pelvis, posterior to the common iliac artery and lateral to the internal iliac arteries, and it is located in this region. Then it departs the pelvis by going via the obturator canal and enters the medial compartment of the thigh, where it remains for the rest of its life.
What causes obturator pain?
One of the most common problems associated with an obturator nerve damage is neuropathic pain. It can be caused by a variety of factors, including: Nerve entrapment occurs when nerves become unable to function as a result of aberrant pressure exerted by adjacent tissue, such as bulging ligaments or disorders in your pelvic like endometriosis.
Which is the origin of the Gemellus superior?
Origin. The gluteal surface of the ischial spine, a slender pointed eminence that arises from the posterior border of the ischium, serves as the origin of the superior gemellus muscle’s base (the sacrospinous ligament is attached to the point of the ischial spine).
What is the primary difference between the obturator internus and Externus?
The obturator internus abducts the leg (moves the leg away from the body), whereas the obturator externus adducts the leg (moves the leg toward the body) (moves the leg toward the body).
What is the origin of the Pectineus?
|Superior pubic ramus (pectineal line of pubis)
|Pectineal line of femur, linea aspera of femur
|Hip joint: Thigh flexion, thigh adduction, thigh external rotation, thigh internal rotation; pelvis stabilization
|Femoral nerve (L2, L3) (Obturator nerve (L2, L3))
What is the origin insertion and action of the obturator internus?
Muscle of the obturator internus
|Posterior surface of the obturator membrane; bony boundaries of the obturator foramen
|Medial surface of greater trochanter of femur
|External rotation of extended thigh; Abduction of flexed thigh; Stabilization of hip joint
|Nerve to obturator internus (L5 and S1)
Is the obturator nerve a branch of the femoral nerve?
The femoral nerve is on the left, while the obturator nerve is on the right.The psoas major tendon is the white structure that runs between them.Both of these nerves derive from the lumbar plexus, which is located up here inside the thickness of the psoas major muscle and connects to the rest of the body.The femoral nerve arises lateral to the psoas major muscle, whereas the obturator nerve emerges medial to the psoas major.
What nerve Innervates the Pectineus?
The supply of nerves The pectineus is regarded as a transitional muscle between the anterior thigh and the medial thigh because it receives innervation mostly from the femoral nerve, with some innervation also coming from the obturator nerve on occasion.