Superficial Peroneal Block and RFA

A superficial peroneal nerve block is a regional anesthesia technique used to block sensation in the lower leg and foot. It involves the injection of a local anesthetic near the superficial peroneal nerve, which is responsible for sensation in the dorsum (top) of the foot and part of the lower leg. This procedure is often performed for surgical interventions, pain management, or diagnostic purposes. This information will explain what it is, Dr. Singer can determine if it is for you.

Why is a Superficial Peroneal Nerve Block Performed?
The superficial peroneal nerve block is commonly used in the following situations:
• Surgical Procedures: It provides anesthesia for surgeries involving the foot or ankle, such as bunionectomy or fracture fixation.
• Pain Management: It can be used to relieve pain in patients with conditions like chronic ankle sprains or foot neuropathies.
• Diagnostic Procedures: It may assist in identifying the source of pain in the lower extremity.

How is the procedure performed?
• Positioning: You will be positioned comfortably, usually sitting or lying down, with your leg exposed.
• Cleaning the Area: The skin over the injection site will be cleaned with an antiseptic solution to reduce the risk of infection. • Identification of the Nerve: Using anatomical landmarks or ultrasound guidance, Dr. Singer will identify the location of the superficial peroneal nerve.
• Injection: A sterile needle will be inserted, and a local anesthetic will be injected around the nerve. You may feel a small pinch during this part of the procedure.
• Monitoring: After the injection, you will be monitored for a short period to ensure that the block is effective and that you do not experience any immediate adverse reactions.

What happens after an injection?
You will be advised to rest the affected limb for a period after the block. It's important to avoid activities that require full weight-bearing on the affected leg until the sensation returns. You may feel immediate pain relief and some numbness for a limited time after the injection. The numbness may last from 2-6 hours. This may indicate the medication has reached the right spot. You can usually return to work the day after the injection. Your pain may return after this short pain-free period or may even be a little worse for a day or two. It may be caused by needle irritation or by the steroid itself. Steroids usually take two or three days to start working, but can take as long as a week.