Knee Viscosupplementation: Cost-Effectiveness Analysis between Stabilized Hyaluronic Acid in a Single Injection versus Five Injections of Standard Hyaluronic Acid Estades-Rubio, Francisco J. Reyes-Martín, Alvaro Morales-Marcos, Víctor García-Piriz, Mercedes García-Vera, Juan J. Perán Quesada, Macarena Marchal Corrales, Juan Antonio Montañez-Heredia, Elvira Knee osteoarthritis Hyaluronic acid Stabilized hyaluronic acid (NASHA) Given the wide difference in price per vial between various presentations of hyaluronic acid, this study seeks to compare the effectiveness and treatment cost of stabilized hyaluronic acid (NASHA) in a single injection with standard preparations of hyaluronic acid (HA) in five injections in osteoarthritis (OA) of the knee. Fifty-four patients with knee osteoarthritis (Kellgren–Lawrence Grade II and III) and the Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain score greater than 7, with a homogeneous distribution of age, sex, BMI, and duration of disease, were included in this study. Patients were randomized into two groups: Group I was treated with NASHA (Durolane®) and Group II with HA (Go-ON®). Patient’s evolution was followed up at the 1st, 2nd, 4th, 8th, 12th, and 26th week after treatment. A statistically significant improvement in WOMAC score was observed for patients treated with NASHA versus those who received HA at Week 26. In addition, the need for analgesia was significantly reduced at Week 26 in the NASHA-treated group. Finally, the economic analysis showed an increased cost of overall treatment with HA injections. Our data support the use of the NASHA class of products in the treatment of knee OA. 2018-01-24T08:29:34Z 2018-01-24T08:29:34Z 2017-03-17 info:eu-repo/semantics/article Estades-Rubio, F.J.; et al. Knee Viscosupplementation: Cost-Effectiveness Analysis between Stabilized Hyaluronic Acid in a Single Injection versus Five Injections of Standard Hyaluronic Acid. International Journal of Molecular Sciences, 18(3): 658 (2017). [http://hdl.handle.net/10481/49137] 1422-0067 http://hdl.handle.net/10481/49137 10.3390/ijms18030658 eng http://creativecommons.org/licenses/by-nc-nd/3.0/ info:eu-repo/semantics/openAccess Creative Commons Attribution-NonCommercial-NoDerivs 3.0 License MDPI