CRM-RJ 870137 · RQE 20287 · Updated on 30/10/2026
What viscosupplementation is
The fluid that lubricates joints, synovial fluid, contains hyaluronic acid, which gives viscosity and protects cartilage. In osteoarthritis this fluid loses quality. Viscosupplementation replenishes this component through an intra-articular injection, helping reduce pain and improve movement in some patients.
It does not regenerate lost cartilage, but can be part of a broader treatment plan together with physical therapy and weight control. Dr. Daniel Ramallo has given an interview on the subject to Jornal do Brasil (see interviews).
When it is indicated
- mild to moderate knee osteoarthritis with pain that persists despite initial measures;
- hip osteoarthritis in selected cases, with image-guided application;
- when surgery is contraindicated or the patient wishes to delay it;
- as a complement to rehabilitation.
In very advanced stages, with bone-on-bone contact and deformity, the benefit is usually smaller and a joint replacement may be considered.
How the procedure is done
It is performed in the office or an outpatient setting, with strict asepsis and, when needed, local anesthesia. In the knee, the injection can be done using anatomical landmarks or ultrasound. In the hip, the joint is deeper and the procedure is image-guided (fluoroscopy or ultrasound) to ensure correct placement.
It takes a few minutes, and patients usually go home right after.
Care and expected effects
In the first days, avoid intense effort. There may be mild pain or swelling at the site, which usually passes quickly. Relief, when it occurs, tends to appear over a few weeks and lasts for a variable time. Local skin infection, allergy to the product and some medical conditions contraindicate the procedure, which is why prior evaluation matters.
