Which muscle is paralyzed in obturator nerve damage?
Clinical Presentation. Patients with obturator nerve injury may present with paralysis of the adductors and numbness over the medial side of the thigh.
Where does the obturator nerve exit?
The obturator nerve emerges from the medial side of the psoas muscle, crosses the lesser pelvis, and passes through the obturator foramen into the medial thigh, innervating the adductor longus, brevis, and magnus; gracilis; obturator externus; and pectineus muscles, whose action is to adduct the thigh.
Does the obturator nerve innervate the knee?
Provides sensory innervation to the medial upper thigh and provides articular branches to the hip and knee. The obturator nerve can become entrapped at the exit of the obturator canal or more distally by fascia, causing exercise-induced medial thigh pain, typically in athletes.
Does obturator nerve go through adductor canal?
The obturator nerve can become entrapped as it passes through the obturator canal. The anterior branch of the obturator nerve innervates the adductor longus, adductor brevis, and gracilis muscles, as well as giving innervation to the hip joint.
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.
What is a obturator in anatomy?
Anatomical Course The obturator nerve is formed from the lumbar plexus. It receives fibres from the anterior divisions of L2, L3 and L4. It then travels posteriorly to the common iliac arteries and laterally along the pelvic wall – towards the obturator foramen of the pelvis.
What type of nerve is the obturator?
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.
What does obturator nerve do?
The obturator nerve (L2–L4) supplies the pectineus; adductor (longus, brevis, and magnus); gracilis; and external obturator muscles. This nerve controls adduction and rotation of the thigh. A small cutaneous zone on the internal thigh is supplied by sensory fibers.
What are the primary contents of the popliteal fossa?
The primary contents of the popliteal fossa are: Along with the above-mentioned structures, the popliteal fossa also includes these structures: Posterior cutaneous nerve of the thigh (terminal part). Descending genicular branch of the obturator nerve.
What nerves are in the popliteal fossa?
Common fibular nerve (common peroneal nerve) The tibial and common fibular nerves are the most superficial of the contents of the popliteal fossa. They are both branches of the sciatic nerve. The common fibular nerve follows the biceps femoris tendon, travelling along the lateral margin of the popliteal fossa.
Where does the obturator nerve come from?
A.Prof Frank Gaillard ◉ ◈ and Dr Aaron Wong et al. 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.
What passes through the popliteal fascia?
The small saphenous vein pierces the popliteal fascia of the popliteal fossa to enter the diamond, and empty into the popliteal vein. In the popliteal fossa, the deepest structure is the popliteal artery. It is a continuation of the femoral artery, and travels into the leg to supply it with blood. Fig 2 – The contents of the popliteal fossa.