Knee replacement surgery is one of the most common procedures that the workers’ compensation industry encounter in serious injury claims. When a warehouse worker blows out a knee, or a construction laborer’s joint finally gives way after years of wear, total knee arthroplasty (TKA) often becomes the endgame of treatment. What happens after that surgery – the recovery timeline, the pain management, the return-to-work prognosis — matters enormously in evaluating and resolving these claims.
A recent development out of the nation’s top-ranked orthopedic hospital may change the way clinicians approach post-surgical knee replacement recovery, with direct implications for workers’ compensation practice.
In October 2025, researchers at Hospital for Special Surgery (HSS) in New York — ranked number one in orthopedics by U.S. News & World Report for sixteen consecutive years – presented results of a retrospective study on a recovery approach they call the “Quiet Knee” protocol“. The findings were shared at the annual meeting of the American Association of Hip and Knee Surgeons (AAHKS).
The traditional approach to knee replacement recovery has long emphasized early, aggressive physical therapy – bending, walking, and pushing through pain as quickly as possible. The “no pain, no gain” mentality has been standard guidance for decades. The Quiet Knee protocol challenges that orthodoxy. Instead of aggressive early mobilization, the protocol focuses on controlling inflammation and swelling during the first ten days after surgery through restricted mobility, gentle passive range of motion, and intensive icing (cryotherapy). Structured telerehabilitation replaces the usual push toward immediate in-person physical therapy.
The rationale is physiological. According to the HSS researchers, overly aggressive early therapy can trigger a counterproductive cycle: the more a patient bends and walks in the first days after surgery, the more the knee swells, which increases pain, which limits the range of motion the therapy was supposed to restore. The Quiet Knee approach respects the body’s inflammatory response and gives the surgical tissue time to begin healing before progressive rehabilitation starts.
The HSS study reviewed all of their total knee replacement patients from 2020 through 2024, comparing a cohort of 271 patients who followed the structured Quiet Knee protocol against groups that received either verbal guidance alone or traditional early-motion therapy. Early results suggest that patients following the protocol experienced a smoother recovery trajectory. Notably, the protocol was associated with a reduction in 90-day opioid exposure of more than 25 percent.
Why this matters: This protocol is likely to appear with increasing frequency in treatment plans and IME reports involving post-TKA recovery. The study gives institutional support to a conservative, rest-first rehabilitation approach – and the opioid reduction finding adds a significant data point to disputes involving post-operative pain management. Practitioners handling knee injury claims on either side should be aware of it.