To analyze the early outcomes of viscosupplementation in patients with severe knee osteoarthritis.
A randomized, double-blind clinical trial of 143 knees divided into three groups: Group 1 – intra-articular injection of triamcinolone; Group 2 – hylan GF20; and Group 3 – triamcinolone + hylan GF20. Outcomes were evaluated using Lysholm and KSS scores before treatment and after one, three and six months.
Within-group comparisons revealed improvements in Lysholm scores in all groups in the one month evaluation relative to pre-treatment levels (p < 0.01). This improvement was maintained in the third month after treatment (p > 0.05). Scores at six months were significantly lower than those observed in the previous follow-up assessments (p < 0.05), but still higher than pre-treatment levels (p < 0.05). KSS scores also improved after one month relative to pre-treatment levels (p < 0.01). This improvement was still present at three and six months after treatment in the corticosteroid group (p > 0.05). Patients treated with hylan GF20 showed lower scores in the last evaluation relative to month one (p < 0.05). No significant differences were observed between the treatment groups (p > 0.05).
Viscosupplementation increased functional scores in patients with severe osteoarthritis of the knee, especially within three months of injection. However, it was not superior to the use of triamcinolone.
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The authors have no financial relationships relevant to this article to disclose.
Conflicts of interest
On behalf of all authors, the corresponding author states that there is no conflict of interest.
All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
Informed consent was obtained from all individual participants included in the study.
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Campos, A.L.S., e Albuquerque, R.S.P., da Silva, E.B. et al. Viscosupplementation in patients with severe osteoarthritis of the knee: six month follow-up of a randomized, double-blind clinical trial. International Orthopaedics (SICOT) 41, 2273–2280 (2017). https://doi.org/10.1007/s00264-017-3625-9