What non-drug treatments work best for knee osteoarthritis?

In this analysis, knee braces ranked highest overall for pain, stiffness and function; hydrotherapy (water-based exercise) was especially effective for pain; and regular exercise consistently improved both pain and function.

What did not work well?

Therapeutic ultrasound, a common physiotherapy offering, ranked consistently near the bottom. That does not mean it never helps anyone, but it challenges its use as a first-line choice for knee osteoarthritis.

How reliable are these rankings?

They are useful but not definitive. The study pooled 139 trials that varied in design, some with small groups and different durations, and used indirect (network) comparisons. Individual results vary, so decisions should be personalized with a clinician.

What is a network meta-analysis?

A statistical method that compares many treatments against each other by combining trials that each tested only one or two options, producing a relative ranking. It is powerful but adds uncertainty because some comparisons are inferred indirectly.

Best Non-Drug Treatments for Knee Arthritis: 10,000-Patient Analysis

Pooling 139 trials, researchers found the most effective drug-free treatments for knee osteoarthritis were surprisingly simple: knee braces, water-based therapy and regular exercise — while a common clinic staple ranked near the bottom.

Knee osteoarthritis — the “wear-and-tear” joint disease that stiffens and aches its way through hundreds of millions of lives — has no shortage of proposed drug-free fixes, from lasers to tape to ultrasound. A large new analysis asked a practical question: which ones actually work best? The answers are refreshingly down-to-earth.

How the study was done

Researchers pooled data from 139 clinical trials covering nearly 10,000 patients and ran a network meta-analysis — a statistical technique that lets scientists compare many treatments against each other even when individual trials only tested one or two, producing a relative ranking. The work, led by Yuan Luo of the First People’s Hospital of Neijiang in China, was published in PLOS One. In all, 12 non-drug therapies were compared, including laser therapy, electrical stimulation, knee braces, insoles, kinesiology tape, water-based therapy, exercise, ultrasound and shock wave therapy.

What came out on top

Three approaches stood out:

Knee braces ranked highest overall — best for reducing pain and stiffness and improving physical function. They work by offloading and stabilizing the joint.
Hydrotherapy (water-based exercise) was especially effective for pain reduction, likely because water supports body weight, easing stress on the joint while allowing movement.
Regular exercise consistently improved both pain and function — reinforcing the most durable message in osteoarthritis care: motion is medicine.

High-intensity laser therapy and shock wave therapy showed promise in certain areas but were less consistent.

What underperformed

Notably, therapeutic ultrasound — a fixture of many physiotherapy clinics — ranked consistently near the bottom. That doesn’t mean it is useless for every person, but it challenges the idea that it should be a go-to for knee osteoarthritis.

Why it matters

Osteoarthritis management often leans on painkillers, which carry side effects, or ends in surgery. This analysis is a reminder that simple, low-risk, low-cost interventions — a brace, a pool, a walking routine — can deliver meaningful relief and are worth trying first or alongside other care. For patients and clinicians deciding where to spend limited time and money, an evidence-based ranking is genuinely useful.

The caveats

The authors are careful: the underlying trials varied significantly in design, some involved small groups, and treatment durations differed — so the rankings are not definitive. Network meta-analyses infer comparisons indirectly, which adds uncertainty. The researchers suggest future studies examine combinations of treatments and cost-effectiveness. And individual results vary: the best choice depends on a person’s specific knee, fitness and preferences. This summarizes research and is not medical advice; discuss options with your clinician.

This article is for general information only and is not medical advice. Consult a qualified healthcare professional for any medical decisions.

What Actually Helps Knee Arthritis? A 10,000-Patient Analysis Ranks the Options