Factors related with the time to surgery in waiting-list patients for knee prostheses.

OBJECTIVE: In the year 2006 the Hospital Complex of Jaén began a new model of attention for consultation of knee osteoarthritis (CMAR), to offer quality treatment to the patient based on clinical practice guidelines. The objective of this study was to analyse the efficiency of the unit, in terms of delaying the time until a knee prostheses is needed. PATIENTS AND METHODS: An analysis of a retrospective cohort of patients seen at the CMAR was made, with a minimum available data set, and a Kaplan Meier analysis carried out in order to evaluate the time until the referral of the patient to surgery, as well as a Cox regression analysis in order to study the factors related with the time until the referral. RESULTS: 224 patients were included, with mean age of 65.7 years (95% CI 64 to 67), 67.9% women. 48.2% had a stage III affection (Kellgren-Lawrence), 27.5% stage 2, 15.3% stage 4, and 9% stage 1. 90.2% (202) received treatment with viscosupplementation (Hialuronic acid NASHA). Single joint affection (P<.0001; OR 0,267, 95% CI 0.130 to 0,549), a higher degree of osteoarthritis (P=.048; OR 0,410, 95% CI 0.169 to 0,992), and lower intensity of pain (P<.0001; OR 1,091, 95% CI 1.044 to 1,141), were the factors related with shorter time until surgery. Treatment with viscosupplementation increased the time until surgery in all patients. CONCLUSIONS: Factors like a lower age of the patient and the involvement of a single joint influenced the referral of the patient to surgery. The administration of viscosupplementation, delayed the time until the patient was finally referred to surgery.

Factores que influyen sobre el tiempo hasta la necesidad de intervenir un paciente en la lista de espera para prótesis de rodilla / Factors related with the time to surgery in waiting-list patients for knee prostheses

Objetivo. En el año 2006 se inició en el Complejo Hospitalario de Jaén un nuevo modelo de consulta monográfica de artrosis de rodilla (CMAR), para ofrecer al paciente un tratamiento de calidad basado en las guías de práctica clínica. El objetivo de este estudio fue analizar el rendimiento de la unidad, en términos de prolongación del tiempo hasta la necesidad de cirugía protésica de rodilla. Pacientes y métodos. Se realizó el análisis de una cohorte retrospectiva de pacientes atendidos en la CMAR y que dispusieran de un conjunto mínimo de datos. Se realizaron un análisis de Kaplan-Meier para evaluar el tiempo hasta la derivación del paciente a cirugía y un análisis de regresión de Cox para estudiar los factores relacionados con el tiempo hasta la derivación. Resultados. Participaron 224 pacientes con una edad media de 65,7 años (IC del 95%, 64 a 67), el 67,9% eran mujeres. El 48,2% tenía una afectación de grado 3 (Kellgren-Lawrence), un 27,5% de grado 2, un 15,3% de grado 4, y un 9% de grado 1. El 90,2% (202) recibió tratamiento con viscosuplementación (ácido hialurónico NASHA). La afectación de una sola articulación (p<0,0001; OR = 0,267, IC del 95%, 0,130 a 0,549), la mayor gravedad de la artrosis (p=0,048; OR = 0,410, IC del 95%, 0,169 a 0,992) y la menor intensidad del dolor (p<0,0001; OR = 1,091, IC del 95%, 1,044 a 1,141) fueron los factores relacionados con menor tiempo hasta la cirugía. El tratamiento con viscosuplementación aumentó el tiempo hasta la cirugía en todos los pacientes. Conclusiones. Factores como la menor edad del paciente y la afectación de una sola articulación influyeron en la decisión de derivación del paciente para cirugía. La administración de viscosuplementación prolongó el tiempo hasta que el paciente fue finalmente derivado a cirugía(AU)

Objective: In the year 2006 the Hospital Complex of Jaén began a new model of attention for consultation of knee osteoarthritis (CMAR), to offer quality treatment to the patient based on clinical practice guidelines. The objective of this study was to analyse the efficiency of the unit, in terms of delaying the time until a knee prostheses is needed. Patients and methods: An analysis of a retrospective cohort of patients seen at the CMAR was made, with a minimum available data set, and a Kaplan Meier analysis carried out in order to evaluate the time until the referral of the patient to surgery, as well as a Cox regression analysis in order to study the factors related with the time until the referral. Results: 224 patients were included, with mean age of 65.7 years (95% CI 64 to 67), 67.9% women. 48.2% had a stage III affection (Kellgren-Lawrence), 27.5% stage 2, 15.3% stage 4, and 9% stage 1. 90.2% (202) received treatment with viscosupplementation (Hialuronic acid NASHA). Single joint affection (P<.0001; OR 0,267, 95% CI 0.130 to 0,549), a higher degree of osteoarthritis (P=.048; OR 0,410, 95% CI 0.169 to 0,992), and lower intensity of pain (P<.0001; OR 1,091, 95% CI 1.044 to 1,141), were the factors related with shorter time until surgery. Treatment with viscosupplementation increased the time until surgery in all patients. Conclusions: Factors like a lower age of the patient and the involvement of a single joint influenced the referral of the patient to surgery. The administration of viscosupplementation, delayed the time until the patient was finally referred to surger(AU)