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BACKGROUND: The objective of this study was to determine whether individuals with hip osteoarthritis who undergo THA have higher HRQOL scores than those awaiting the procedure; An additional aim was to investigate associated factors exerting an impact on HRQOL. MATERIALS AND METHODS: A cross-sectional study was conducted. Participants were divided into two groups: pre-THA and post-THA. Functional capacity was assessed using the Harris Hip Score, and HRQOL was measured using a validated and adapted version of the WOMAC questionnaire. A multivariate analysis of the WOMAC results was used to identify the main variables associated with HRQOL in both groups. RESULTS: The post-THA group had higher HRQOL scores (100.4 ± 88.5) than the pre-THA group (197.8 ± 54.1). The domains Pain (68.0 ± 19.0 versus 34.7 ± 30.8), Stiffness (61.2 ± 28.9 versus 29.9 ± 33.1), and Phy-sical Act--vity (68.6 ± 16.1 versus 36.6 ± 30.2) also had higher scores in the post-THA group. Pain was the variable most frequently associated with the increase in post-THA HRQOL scores. Other variables such as occupation, time of diagnosis, joint function, and body weight also had an impact on the HRQOL of both groups. CONCLUSIONS: 1. Individuals who had undergone THA showed higher HRQOL scores in all domains when compared to those still awaiting the procedure, and pain reduction was the variable most strongly associated with the improvement in quality of life of those patients. 2. Occupation and mobility were associated with the Stiffness domain of QOL; Occupation also had a bearing on health-related quality of life as a whole. 3. Physical Activity of the WOMAC instrument was associated with time of diagnosis, patient's body weight, and function as assessed by the HHS.

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INTRODUCTION: Operative wound infections of patients undergoing total hip arthroplasty have an incidence from 2% to 5%, generating impact on hospital stay, resource use, prolonged antibiotic therapy, including temporary or definitive sequelae. OBJECTIVE: To generate a predictive model for surgical wound infection in patients undergoing total hip arthroplasty between 2012 and 2014 at the High Complexity Hospital. MATERIAL AND METHOD: Cohort of patients with total hip arthroplasty. A description of the epidemiological variables was made and a predictive model was generated by means of logistic regression. RESULTS: 441 patients were analyzed. The predictive model obtained included the variables: days of post-operative stay (OR 1.11 IC95% [1.03 - 1.20]), transfusion of at least one unit of red blood cells (OR 3.13 IC95% [1.17 - 10.86]), diagnosis of previous depression to surgery (OR 5.75 IC95% [1.32 - 25.32], non-compliance with antibioprophylaxis administration time (OR 5.46 IC95% [1.68 - 17.78], P < 0.001) and pseudo R2 = 0.2293. Score point of 13 points with sensitivity 44.4%, specificity of 91.6%, LR (+) 5.29, LR (-) 0.61, 1 to 6 points "low risk", 7 to 12 points "medium risk", 13 to 18 points "high risk", from 19 points as "maximum risk". CONCLUSION: the model presents a good predictive capacity of operative wound infection and adequately represents the cohort under study.

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Resumen Introducción: Las infecciones de herida operatoria de pacientes intervenidos de artroplastía total de cadera, presentan una incidencia desde 2 a 5%, generando impacto en la estadía hospitalaria, uso de recursos, antibioterapia prolongada y secuelas temporales o definitivas. Objetivo: Generar un modelo predictivo para la infección de herida operatoria en pacientes intervenidos de artroplastía total de cadera, entre los años 2012 y 2014, en un hospital de alta complejidad. Material y Método: Cohorte de pacientes con artroplastía total de cadera. Se efectuó la descripción de las variables epidemiológicas y se generó un modelo predictivo por regresión logística. Resultados: Se analizaron 441 pacientes. El modelo predictivo obtenido incluyó las variables: días de estadía post operatoria (OR 1,11 IC95% [1,03-1,20]), transfusión de al menos una unidad de glóbulos rojos (OR 3,13 IC95% [1,17-10,86]), diagnóstico de depresión previo a la cirugía (OR 5,75 IC95% [1,32-25,32], incumplimiento del tiempo de administración de la antibioprofilaxis (OR 5,46 IC95% [1,68-17,78]; p < 0,001) y pseudo R2 = 0,2293. Punto de corte de "score" de 13 puntos con sensibilidad 44,4%, especificidad de 91,6%, LR (+) 5,29, LR (-) 0,61, considerando además la siguiente clasificación: 1 a 6 puntos "bajo riesgo", 7 a 12 puntos "mediano riesgo", 13 a 18 puntos "alto riesgo", desde 19 puntos como "máximo riesgo". Conclusión: El modelo presenta una buena capacidad de predicción de infección de herida operatoria y representa adecuadamente a la cohorte en estudio.

Introduction: Operative wound infections of patients undergoing total hip arthroplasty have an incidence from 2% to 5%, generating impact on hospital stay, resource use, prolonged antibiotic therapy, including temporary or definitive sequelae. Objective: To generate a predictive model for surgical wound infection in patients undergoing total hip arthroplasty between 2012 and 2014 at the High Complexity Hospital. Material and Method: Cohort of patients with total hip arthroplasty. A description of the epidemiological variables was made and a predictive model was generated by means of logistic regression. Results: 441 patients were analyzed. The predictive model obtained included the variables: days of post-operative stay (OR 1.11 IC95% [1.03 - 1.20]), transfusion of at least one unit of red blood cells (OR 3.13 IC95% [1.17 - 10.86]), diagnosis of previous depression to surgery (OR 5.75 IC95% [1.32 - 25.32], non-compliance with antibioprophylaxis administration time (OR 5.46 IC95% [1.68 - 17.78], P < 0.001) and pseudo R2 = 0.2293. Score point of 13 points with sensitivity 44.4%, specificity of 91.6%, LR (+) 5.29, LR (-) 0.61, 1 to 6 points "low risk", 7 to 12 points "medium risk", 13 to 18 points "high risk", from 19 points as "maximum risk". Conclusion: the model presents a good predictive capacity of operative wound infection and adequately represents the cohort under study.

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Orthopedic aid to developing nations is expanding and becoming a unique facet of the specialty. This investigation seeks to compare patient impressions and concerns regarding the care patients receive as part of an itinerant surgical aid trip in 2 nations. In 2013 and 2014, patients from 2 separate nations completed a Likert scale survey assessing impressions of the care they received at the hands of a surgical team from abroad. Mean response scores were calculated and compared using a t test. This is the first investigation to compare patient concerns across 2 nations in a surgical aid trip setting. The results highlight the importance of culture in understanding patients and the impressions of the care they receive.

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BACKGROUND: To address both the growing burden of joint disease and the gaps in medical access in developing nations, medical relief organizations have begun to launch programs to perform total joint replacement (TJR) on resident populations in developing countries. One outcome of TJR of particular interest is physical activity (PA) since it is strongly linked to general health. This study evaluates the amount of postoperative participation in PA in low-income patients who received total joint replacement in the Dominican Republic and identifies preoperative predictors of postoperative PA level. METHODS: We used the Yale Physical Activity Survey (YPAS) to assess participation in postoperative PA 1-4 years following total knee or hip replacement. We compared the amount of aerobic PA reported by postoperative TJR patients with the levels of PA recommended by the CDC and WHO. We also analyzed preoperative determinants of postoperative participation in aerobic PA in bivariate and multivariate analyses. RESULTS: 64 patients out of 170 eligible subjects (52/128 TKR and 14/42 THR) who received TJR between 2009-2012 returned for an annual follow-up visit in 2013, with a mean treatment-to-follow-up time of 2.1 years. 43.3% of respondents met CDC/WHO criteria for sufficient participation in aerobic PA. Multivariate analyses including data from 56 individuals identified that patients who were both younger than 65 and at least two years postoperative had an adjusted mean activity dimensions summary index (ADSI) 22.9 points higher than patients who were 65 or older and one year postoperative. Patients who lived with friends or family had adjusted mean ADSI 17.2 points higher than patients living alone. Patients who had the most optimistic preoperative expectations of outcome had adjusted mean ADSI scores that were 19.8 points higher than those who were less optimistic. CONCLUSION: The TJR patients in the Dominican cohort participate in less PA than recommended by the CDC/WHO. Additionally, several associations were identified that potentially affect PA in this population; specifically, participants who are older than 65, recently postoperative, less optimistic about postoperative outcomes and who live alone participate in less PA.

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OBJECTIVE: To determine the general health status perceived by patients undergoing total hip arthroplasty with mini-stem. MATERIAL AND METHODS: Health questionnaire SF-36 has been used to assess health perceived by 13 male patients with a mean age of 46.62 (34-53) years after the implantation of an uncemented, MiniHip® (CorinMedical) total hip arthroplasty, after a mean follow up of 23.2 (12-47) months. Results were compared with the reference values of Spanish men population from 45 to 54 years. RESULTS: Differences were found in areas such as physical and emotional role, physical function, social function and pain; while scores of the remaining items were similar to the population of reference. DISCUSSION: It is important to know how our surgical actions affect the quality of life of patients and how it is perceived by them to complement the results of our surgeries.

Objetivo: Determinar el estado de salud general percibida por los pacientes sometidos a artroplastia total de cadera con mini-vástago. Material y Método: Se ha administrado el cuestionario de salud SF-36 para evaluar el estado de salud percibido por 13 pacientes varones con una edad media de 46,62 (34-53) años en los que se implantó una artroplastia total de cadera no cementada tipo MiniHip® (CorinMedical) tras un seguimiento medio de 23,2 (12-47) meses. Los resultados obtenidos se compararon con los valores de referencia de la población española en varones de 45 a 54 años. Resultados: Se hallaron diferencias en aspectos como rol físico y emocional, función física, función social y dolor; mientras que en el resto de los ítems la puntuación fue similar a la de la población de referencia. Discusión: Existe la necesidad de conocer en qué grado afectan nuestras intervenciones a la calidad de vida del paciente y la manera en que es percibida por él mismo para complementar los resultados de nuestras intervenciones. Conclusión: Es necesaria una nueva perspectiva para la valoración funcional y de calidad de vida de los pacientes jóvenes sometidos a una artroplastia total de cadera.

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