What is an obturator nerve block?
Obturator nerve block is used to treat hip joint pain and is also used in the relief of adductor muscle spasm associated with hemiplegia or paraplegia.
What happens when the obturator nerve is stimulated?
Electrical stimulation of the nearby obturator nerve during electroresection of lateral wall tumors can result in a powerful adductor spasm of the leg known as an “obturator jerk”. An obturator jerk during TURBT greatly increases the risk of bladder perforation.
Does the obturator nerve supply the knee joint?
The posterior branch (division) of the obturator nerve pierces the obturator externus and then passes over the adductor magnus. It supplies both of these muscles and gives articular branches that supply the capsule of the knee joint.
Why is obturator nerve spared in spinal Anaesthetic?
Spinal anesthesia does not reliably prevent the obturator reflex. Regional anesthesia is another potential treatment modality to prevent the obturator reflex during TURBT. Motor blockade of the obturator nerve will prevent this adduction in the event of inadvertent nerve stimulation.
How long does an obturator block last?
Step 1 – Obturator and Femoral Nerve Block: This is meant to determine and confirm if these nerves are responsible for the pain. This relief is only intended to last approximately 5-8 hours.
How do you assess an obturator nerve block?
A simple method of assessing adductor muscle strength (motor block) is to instruct the patient to adduct the blocked leg from an abducted position against resistance. Weakness or inability to adduct the leg indicates a successful obturator nerve block.
How long does an obturator nerve block last?
Where is the obturator nerve located?
The obturator nerve is derived from L2-4 and travels along the medial border of the iliopsoas 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 painful is a nerve block?
Will having a nerve block hurt? The placement of a nerve block is associate with minor discomfort. Most patients report that it is less painful than the placement of a small IV catheter. We give all patients sedating medicine to help you relax and then numb the skin prior of the nerve block placement.
How is an obturator nerve damage treated?
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.
Do they put you to sleep for a nerve block?
Will I be awake during the operation? After a nerve block, the part of your body that will be operated on will be numb. Many times it is your choice to be as awake or asleep as you want. You never get to see the surgery itself because a large sterile drape is always placed between you and the surgeon.