Nerve to internal obturator and superior gemellus
Introduction
The nerve to the obturator internus and superior gemellus is formed by the anterior (ventral) divisions of the L5, S1, and S2 nerve roots of the sacral plexus. The nerve innervates the obturator internus and superior gemellus muscles as well as the fascia of the lateral aspect wall of the ischioanal fossa.
Gross anatomy
Origin of the nerve
The nerve to obturator internus is getting arises from the anterior divisions of the sacral plexus. It is formed from the L5-S2 nerve roots and leaves the pelvis through the greater sciatic foramen inferior to the piriformis muscle and usually between the posterior cutaneous nerve of the thigh and the pudendal nerve.
Course of the nerve
After supplying a small branch to the gemellus superior muscle the nerve then runs laterally, curves around the ischial spine, and passes via the lesser sciatic foramen to reenter the pelvis. The nerve supplies the obturator internus muscle from the medial aspect of the muscle in the perineum region.
Variant anatomy
It has been noted in cadaveric studies that the nerve to quadratus femoris and obturator internus frequently gets arises from a common root and links between these two nerves have been repeatedly observed. different branching patterns to the Gemelli have also been observed.
The superior gemellus has been demonstrated to collect supplies from the branches of the nerve to quadratus femoris as well as twigs from the links of these two nerves.
FAQ
What nerve supplies the superior gemellus muscle?
The superior gemellus is innervated by the sacral plexus, through the nerve to the obturator internus (L5-S1/2).
What supplies the superior and inferior gemellus?
nerve to the internal obturator and superior gemellus
The superior and inferior Gemelli are innervated by the inferior gluteal artery. Nerve supply to the superior gemellus is from the innervates to the internal obturator – L5, S1, and S2.
What muscles are controlled by the nerve to the obturator internus and the superior gemellus?
The nerve to obturator internus, also known as the obturator internus nerve, is a nerve that supplies the obturator internus and gemellus superior muscles.
How do I strengthen my superior Gemellus?
crook forward and place the hands onto the floor with the elbows to the outside of the right knee. Push the left leg straight outside and drop the hips while working to balance on the ball of the left foot. Repeat the same exercise on the other side. Perform 10 repetitions of this exercise on both sides.
Where is the superior gluteal nerve commonly to be damaged?
Injury to the superior gluteal nerve can take place due to dislocation of the hip joint, hip fractures, restoration of hip fractures, and also cause due to intramuscular injection in the buttocks.
What does the superior gemellus muscle do?
The Gemellus superior is a small muscle in the posterior-lateral region of the hip. It works with gemellus inferior and obturator internus, to form the triceps coxae, and help it to externally rotate the hip. These three muscles also help as the deep stabilizers of the hip joint.
What does the inferior gluteal nerve do?
The inferior gluteal nerve innervates the gluteus maximus muscle. The inferior gluteal nerve gives motor function to the gluteus maximus, a major muscle include in hip extension, as well as external rotation of the hip joint.
What happens when the obturator nerve is stimulated?
The obturator nerve conveys in close proximity to the inferolateral bladder wall, bladder neck, and lateral prostatic urethra. During a transurethral operation resection in these regions may result in stimulation of the obturator nerve, causing violent adductor contraction and possible unintentional bladder perforation.
