Many of the products used for arthritis like glucosamine etc are more of neutraceuticals than valid pharmaceutical agents. In early arthritis many may improve symptoms but we'll established cartilage degeneration is not repaired by any of drugs at present.

That is true specially if you are injecting anything in knee capsule, you are damaging the knee by causing more damage to synovial membrane and that will eventually become more inflammatory and will increase osteoarthritis. People do inject hyaluronic acid and is a big bussuness. in the long term, it will not do anything, At the end of the day, it may slightly relieve pain for a month or so at the cost of more inflammation of synovial membrane and causing rheumatic arthritis. I injected stem cells in knee capsule of rat after induced osteoarthritis, they damaged the knee rather than improving. Be careful of these dirty scams in the whole world. Surgeons are the most scammer with zero knowledge of science and money hungary idiots.

Unfortunately, there is no "cure" for osteoarthritis (OA). Once there is cartilage loss, there is no treatment that will replace back cartilage to what it was before. However, there is a possibility that pharmaceutical grade glucosamine sulphate (i.e. glucosamine sulphate manufactured as a drug, rather than a supplement), can reduce the rate of cartilage loss in patients with OA, thus slowing the progression of disease. The problem with glucosamine is that there 2 forms, glucosamine sulphate and glucosamine hydrochloride, made by hundreds of different manufacturers, almost all as supplements so without rigorous quality control, so the evidence base for any effect is of poor quality. The data for any consistent effect on cartilage in OA is with the pharmaceutical grade glucosamine sulphate, but the caveat is that all these studies are sponsored by the pharmaceutical company that manufactures the drug.