Popliteal Sciatic Nerve Block Catheter Placement for Foot Surgery

A Study to Determine the Quality of Sensory and Motor Blockade of Popliteal Sciatic Nerve Block Catheters Placed Under Ultrasound Guidance With and Without Nerve Stimulation

Hypothesis: When performed under ultrasound guidance, there is improvement in the sensory and motor blockade obtained with stimulating popliteal catheters versus those placed without nerve stimulation.

Inclusion criteria:

• patients scheduled to undergo foot or ankle surgery at Mayo Clinic Jacksonville

Exclusion criteria:

• emergency surgery
• peripheral neuropathy in the distribution of the sciatic nerve on the operative side
• history of recent alcohol or drug abuse
• allergy to local anesthetics
• pregnancy
• coagulopathy
• subjects declined to participate