Where is the obturator nerve located?
The obturator nerve (L2, L3, L4) descends through the fibers of the psoas major and emerges from its medial border. It then passes behind the common iliac vessels, on the lateral side of the ureter, and runs along the lateral wall of the lesser pelvis, above and in front of the obturator vessels.
Where does the obturator nerve pass through?
Origin and course Here, the nerve runs on the lateral wall of the pelvis, posterior to the common iliac artery and lateral to the internal iliac vessels. Then, it exits the pelvis by passing through the obturator canal and to enter the medial compartment of the thigh.
What does the obturator nerve contain?
| Obturator nerve | |
|---|---|
| From | Lumbar plexus L2-L4 |
| To | posterior branch of obturator nerve, anterior branch of obturator nerve |
| Innervates | medial compartment of thigh |
| Identifiers |
What is a obturator in anatomy?
Your obturator nerve is in your groin. It enables sensation and muscle movement in your inner thigh. Sports injuries and medical procedure complications can damage the nerve (obturator neuropathy).
Where does the obturator nerve come 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.
Is obturator externus and adductor?
Obturator externus is located in the pelvis on the anterior aspect of the innominate bones. It covers the obturator foramen and is located deep to pectineus and superior parts of the adductors of the thigh. Its tendon lies deep to the quadratus femoris muscle and separates it from the neck of the femur.
How do you test the obturator nerve?
Slump with hands behind back and bend forward with neck flexed, slight over pressure on head. Pull affected leg out to increase abduction. If abductors are tight then let head come up – if pain goes away then more likely to be nerve involvement.
What is a obturator nerve definition?
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.
How is the obturator nerve damaged?
It can be damaged through direct injury to the nerve or to surrounding muscle tissue. Mild damage to the obturator nerve can be treated with physiotherapy. More severe cases may require surgery.
What is the function of the obturator?
| Internal obturator muscle | |
|---|---|
| Actions | Abducts & laterally rotates the extended hip and abducts the flexed thigh at the hip, and stabilizes the hip during walking |
| Identifiers | |
| Latin | Musculus obturatorius internus |
| TA98 | A04.7.02.012 |
Is obturator internus anterior or posterior?
Obturator internus muscle
| Origin | Posterior surface of the obturator membrane; bony boundaries of the obturator foramen |
|---|---|
| Insertion | Medial surface of greater trochanter of femur |
| Action | External rotation of extended thigh; Abduction of flexed thigh; Stabilization of hip joint |
| Innervation | Nerve to obturator internus (L5 and S1) |
The obturator nerve is a large nerve arising from the lumbar plexus and the nerve of the medial compartment of the thigh. It arises from the anterior divisions of L2-4 in the lumbar plexus . The nerve descends medial to psoas major to the obturator canal where it divides into anterior and posterior divisions.
What is an obturator nerve impingement?
Nerve impinged due to incorrect positioning of an infant’s lower limb during delivery The symptoms caused by the impingement of the obturator nerve affect the structures and functions of the lower back, hip and knee areas.
What are the symptoms of obturator nerve damage?
Symptoms of obturator nerve damage include: 1 Numbness, reduced sensation, or abnormal sensation in the skin of the inner thigh 2 Pain that may extend down the inner thigh and is worsened by walking or spreading the legs 3 Weakness in adduction of the thigh 4 Gait and posture problems linked to loss of adduction ability More
What is obturator nerve block used for?
Obturator nerve block is used in the management of pain after lower limb surgery or for chronic hip pain. The anaesthetic is injected inferior to the pubic tubercle and lateral to the tendon of the adductor longus muscle.