Análisis de periodicidad de reinyección en gonartrosis con distintos tipos de ácidos hialurónicos / Analysis of reinjection periodicity in knee osteoarthritis with different types of hyaluronic acids

Objetivo: Evaluación de la periodicidad de reinyección de ácido hialurónico (AH) en pacientes con gonartrosis. Objetivo secundario: relacionar el grado de artrosis con el tiempo entre infiltraciones y posible estudio por subgrupos entre los diferentes preparados comerciales. Diseño: Estudio observacional retrospectivo. Materiales y método: Revisión de historias clínicas y radiografías de los pacientes con gonartrosis tratados con AH intraarticular en el Servicio de Rehabilitación en el periodo entre enero de 2017 y junio de 2019. Variables: sociodemográficas, lateralidad, fecha del acto, grado de artrosis según Kellgren y Lawrence, AH utilizado, tiempo entre infiltraciones. Análisis estadístico mediante curvas de Kaplan-Meier considerando la reinfiltración como evento final y test de Kruskal Wallis para valores cuantitativos no paramétricos. Resultados: Analizamos 110 actos de infiltración en 67 pacientes: media de edad en momento de infiltración 72,12 años, 85,1% mujeres, 59,1% rodilla derecha. Cuatro tipos de AH: 33 casos al 1%; PM: 0,9 MDa (AH1); 12 al 1,5%; PM: 1,5 – 2 MDa (AH2), 42 al 2%; PM: 1,2 MDa (AH3) y 6 Hilano G-F20; PM: 6 MDa (AH4). En 17 ocasiones no se registró el ácido hialurónico utilizado (AH5). Se reinfiltró en 32 ocasiones (29,09%). Media de meses (Intervalo de Confianza [IC] 95%) entre infiltraciones: AH1 6,9 (5,7-8,16), AH2 12,5 (0- 35), AH3 9,3 (5,5- 13,1), AH4 5 (3 – 6,9). En dos casos en que no se pudo establecer el tipo de preparado infiltrado, el valor medio entre reinfiltraciones fue 8,5 (5,6- 11,4).No hubo resultados estadísticamente significativos al realizar un análisis comparativo el tipo de AH ni el grado de artrosis con el tiempo de reinfiltración. Conclusiones: En nuestro estudio se observa que el AH3 presentó un mayor tiempo entre infiltraciones con respecto a los otros tipos sin poder establecer diferencias significativas.(AU)

Objective: To evaluate the periodicity of hyaluronic acid (HA) reinjection in patients with knee osteoarthritis. Secondary aim: To relate the degree of arthrosis with the time between infiltrations and the possible study by subgroups between the different commercial preparations. Design: Retrospective observational study. Materials and method: Review of medical records and X-rays of patients with knee osteoarthritis that had been treated with intra-articular HA at the Rehabilitation Service in the period between January 2017 and June 2019. Variables: Socio-demographic, Laterality, Intervention Date, Degree of Arthrosis according to Kellgren and Lawrence, HA used, Time between filtrations. Statistical analysis carried out by Kaplan–Meier curves, taking into account the reinfiltration as final event, and Kruskal–Wallis test for non-parametric quantitative data. Results: We analysed 110 infiltration acts in 67 patients: average age at the time of infiltration 72.12 years, 85.1% women, 59.1% right knee. 4 types of HA: 33 cases at 1%. MW: 0.9MDa (HA1), 12 at 1.5%. MW: 1.5–2MDa (HA2), 42 at 2%. MW: 1.2MDa (HA3) and 6 Hylan G-F20. MW: 6MDa (HA4).We reinfiltrated in 31 occasions (28.2%). Average of months (IC 95%) between infiltrations: HA1 6.9 (5.7–8.16), HA2 12.5 (0–35), HA3 9.3 (5.5–13.1), HA4 5 (3–6.9). In 2 cases where it was not possible to establish the type of infiltrated formulations, the mean value between reinfiltrations was 8.5 (5.6–11.4)There were no statistically significant results by relating the HA type or the degree of arthrosis with the reinfiltration time. Conclusions: In our study, we observe that the HA3 presented a longer time between infiltrations in comparison with other types, with no possibility to detect significant differences.(AU)

[Analysis of reinjection periodicity in knee osteoarthritis with different types of hyaluronic acids]. / Análisis de periodicidad de reinyección en gonartrosis con distintos tipos de ácidos hialurónicos.

OBJECTIVE: To evaluate the periodicity of hyaluronic acid (HA) reinjection in patients with knee osteoarthritis. Secondary aim: To relate the degree of arthrosis with the time between infiltrations and the possible study by subgroups between the different commercial preparations. DESIGN: Retrospective observational study. MATERIALS AND METHOD: Review of medical records and X-rays of patients with knee osteoarthritis that had been treated with intra-articular HA at the Rehabilitation Service in the period between January 2017 and June 2019. VARIABLES: Socio-demographic, Laterality, Intervention Date, Degree of Arthrosis according to Kellgren and Lawrence, HA used, Time between filtrations. Statistical analysis carried out by Kaplan-Meier curves, taking into account the reinfiltration as final event, and Kruskal-Wallis test for non-parametric quantitative data. RESULTS: We analysed 110 infiltration acts in 67 patients: average age at the time of infiltration 72.12 years, 85.1% women, 59.1% right knee. 4 types of HA: 33 cases at 1%. MW: 0.9MDa (HA1), 12 at 1.5%. MW: 1.5-2MDa (HA2), 42 at 2%. MW: 1.2MDa (HA3) and 6 Hylan G-F20. MW: 6MDa (HA4). We reinfiltrated in 31 occasions (28.2%). Average of months (IC 95%) between infiltrations: HA1 6.9 (5.7-8.16), HA2 12.5 (0-35), HA3 9.3 (5.5-13.1), HA4 5 (3-6.9). In 2 cases where it was not possible to establish the type of infiltrated formulations, the mean value between reinfiltrations was 8.5 (5.6-11.4) There were no statistically significant results by relating the HA type or the degree of arthrosis with the reinfiltration time. CONCLUSIONS: In our study, we observe that the HA3 presented a longer time between infiltrations in comparison with other types, with no possibility to detect significant differences.