About Peripheral Nerve Stimulation (PNS)
Peripheral nerves run from the spinal cord out to the arms, legs, and trunk. When one of these nerves or the area it supplies stays painful for months, mild electrical stimulation near the nerve can change how pain signals are processed. Most people feel a gentle tingling or no sensation at all while it runs.
Several PNS systems exist. Some use a temporary lead that stays in place for a set treatment period of weeks and is then removed. Others are implanted for longer-term use, and those usually begin with a trial period to see whether stimulation helps before a lasting system is placed.
Dr. Chen places the lead through a needle under ultrasound, which lets him see the nerve and the surrounding blood vessels. PNS is typically an outpatient procedure, and it works best as part of a broader plan that keeps you moving and building strength.
What happens during treatment
- 1.
Dr. Chen evaluates your pain, reviews prior treatments, and may use a diagnostic nerve block to confirm which nerve is involved.
- 2.
The skin is cleaned and numbed. Using ultrasound, the lead is guided through a needle to lie close to the target nerve.
- 3.
The lead is connected to a small stimulator, and the settings are adjusted until the pulses cover your painful area comfortably.
- 4.
You go home the same day with instructions for using the device, caring for the lead site, and follow-up visits to adjust settings.
Who may be a good candidate
- People with chronic nerve pain after an injury or surgery, such as pain from an irritated or entrapped nerve.
- Adults with persistent shoulder, knee, or back pain that has not responded well enough to rehab and injections.
- People who want to reduce reliance on pain medication.
- People with residual limb or phantom limb pain after amputation.
Recovery
Most people return to normal daily activity within a day or two. With a temporary lead, you will keep the lead site clean and dry and avoid heavy strain on the area so the lead does not shift. Relief can begin during treatment and, for some people, continues after the lead is removed. Follow-up visits allow the settings to be fine-tuned.
Risks and limits
Possible problems include skin irritation from the adhesive or dressing, infection at the lead site, and the lead moving out of position, which can reduce relief. Rarely, a small piece of lead can remain under the skin when it is removed. Some systems limit certain MRI scans. PNS may not be right if you have an active infection, a bleeding disorder, or certain implanted heart devices, and it does not help everyone.
What to expect at your visit
- 1.
We listen first
Your visit opens with a real conversation: how the problem started, what you have already tried, and the activity you want back.
- 2.
Exam and in-office ultrasound
A hands-on exam, then ultrasound at the exam table, often while you move, so your physician can see the tendon, joint, or nerve involved.
- 3.
A clear diagnosis and plan
You leave knowing what is wrong and what your options are, from strength-based rehab to procedures, and why we recommend each one.
- 4.
Treatment and follow-through
Most procedures happen here in the office. We coordinate with your physical therapist and check progress against the goals you set.
Questions about PNS
- Is peripheral nerve stimulation permanent?
- It depends on the system. Some PNS leads are temporary and removed after a set number of weeks, while others are implanted for long-term use after a successful trial. Dr. Chen will explain which option fits your situation.
- What does peripheral nerve stimulation feel like?
- Most people feel a mild tingling or pulsing over the painful area, and some newer settings produce little or no sensation. The strength can be adjusted so it stays comfortable.
- Can I exercise with a peripheral nerve stimulator?
- Yes, most people can walk and do light exercise. With a temporary lead, you should avoid heavy lifting or intense movement of the treated area and keep the site dry. Your physician will tell you when to progress your training.