Two fundamentally different approaches
Joint replacement removes the damaged joint and installs a prosthetic. It's a proven, effective treatment — but it's also irreversible, requires significant recovery time, and carries surgical risks including infection, blood clots, and implant wear.
Peripheral nerve stimulation takes a different approach entirely. Instead of replacing the joint, PNS modulates the pain signals traveling from the joint to the brain. The joint itself is preserved, and the procedure is fully reversible.
Recovery and downtime
Joint replacement is followed by a structured rehabilitation programme, and mobility is limited while it runs. Your surgeon is the person who can tell you what that period would involve in your case.
PNS is an outpatient procedure. Most patients return to normal activities within days, not months. There's no hospital stay, no extended rehabilitation protocol, and no prolonged period of restricted movement.
Durability, the pain signal, and your options
Total joint replacement changes joint structure. Implantable peripheral nerve stimulation targets the nerves that carry pain signals — for some patients, that nerve-driven component matters as much as what imaging shows. PNS does not reverse arthritis, but it may calm an overactive pain pathway while you preserve anatomy and keep future options open.
Published follow-up of implantable PNS now runs to two years. A 2026 summary of 24-month results from the multicenter COMFORT randomized trial reported durable, clinically meaningful pain relief in the cohort that completed follow-up, with improvements in disability, mood, and quality of life alongside it. That is what happened in a studied population; it is not a prediction about you, and ARC does not publish an outcome rate. Source: Practical Neurology, "Implantable Peripheral Nerve Stimulation Shows Durable Pain Relief at 24 Months" (2026), https://practicalneurology.com/news/implantable-peripheral-nerve-stimulation-shows-durable-pain-relief-at-24-months/2485516/ — citing Engle MP et al., Chron Pain Manag (2026), https://doi.org/10.29011/2576-957X.100079
Implantable PNS is intended as ongoing therapy when it helps. The usual pathway puts a period of trial stimulation first, so that a longer-term implant is offered only to people who have already responded. Your physician sets the length of that trial and the criteria for reading it.
Reversibility
This is the most significant distinction. Joint replacement is permanent — once the joint is removed, it cannot be restored. If complications arise or the prosthetic wears out, revision surgery is the only path forward.
PNS is fully reversible. If it doesn't provide adequate relief, or if your condition changes, the device can be removed and you retain all future treatment options, including replacement if needed. You lose nothing by trying PNS first.
When replacement is the right choice
Replacement remains the gold standard for joints with severe structural deterioration — bone-on-bone arthritis, major deformity, or complete loss of function. In these cases, PNS may not provide sufficient relief because the underlying anatomy is too compromised.
The ARC approach doesn't oppose replacement. It sequences treatment so that less invasive options are explored first, and replacement is reserved for when it's clearly the most appropriate path.
The preserve-first principle
ARC's philosophy is simple: preserve the natural joint whenever possible. PNS gives patients and physicians an intermediate step between conservative care (therapy, injections) and irreversible surgery. For many patients, that intermediate step is all that's needed.