Knee osteoarthritis is the most common reason people end up in a regenerative medicine clinic, so the question of what works best matters here in a defined way. A landmark 2025 review made exercise the clearest first-line treatment for knee arthritis, while new imaging research raised questions about repeated use of steroid injections. This guide lays out the evidence on exercise, injections, and regenerative care, and how patients can combine them sensibly.
217
randomized trials in the 2025 BMJ network meta-analysis
Aerobic
exercise found to be the most effective first-line treatment for knee arthritis
5
clinical providers on the team
Published in The BMJ in October 2025, a network meta-analysis of 217 randomized trials and 15,684 participants compared exercise styles for knee osteoarthritis. Aerobic exercise, including walking, cycling, and swimming, was the most effective and safest way to improve pain, function, gait, and quality of life at 4, 12, and 24 weeks, and the authors argued it should be the cornerstone of treatment. Other kinds of movement helped as well: resistance and mind-body training compared reasonably, but nothing outperformed aerobic exercise.
The same period brought caution about a very common consideration. A 2025 study using magnetic resonance imaging (MRI) data from the Osteoarthritis Initiative reported that knee corticosteroid injections were associated with greater structural progression of arthritis, meaning worse damage to cartilage, bone, and menisci, than no injection or hyaluronic acid, even after a single injection. The authors said the finding directly challenges the routine use of corticosteroid injections for knee arthritis symptoms. This remains an active debate, since another analysis of the same database found no increase in total knee replacement risk, but the 2025 imaging finding deserves attention.
“A 2025 imaging study found that knee corticosteroid injections were associated with greater structural progression of knee osteoarthritis than no injection or hyaluronic acid, even after a single injection.”
This evidence reinforces the philosophy behind our clinic: injections have a place, but they are not a substitute for the basics. For many patients, the smartest first plan combines regular aerobic activity, strength training, and weight management, with an injection considered for a specific role. PRP, in many 2025 and 2026 meta-analyses, reduced pain and improved knee function better than hyaluronic acid, which makes it a candidate when exercise alone has plateaued. The most important principle is building a plan around your exact situation rather than defaulting to a needle.
A note from the clinic
No single treatment replaces movement, nutrition, and sleep. At Aloha Stem Cell in Honolulu we will help you build a plan that starts with the most evidence-based step, real movement, and adds an injection only when an honest evaluation supports it. Call (808) 593-2525 to talk it through.
Our team is happy to listen to your story, answer your questions, and help you decide whether a consultation makes sense. There is no pressure and no obligation.
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