[Translated article] Metal on metal total hip arthroplasty: Correlation between inclination of the acetabular and metal ion levels.

Due to their low friction index, hip arthroplasties with metal-metal (M-M) friction torque have been an attractive option in young patients with high functional demand, currently they have suffered a decrease in their use due to the complications of some models and physiological reactions adverse reactions related to the elevation of metal ions in the blood. Our objective is to review the patients with M-M pair operated in our centre, correlating the ion level with the position of the acetabular component and with the size of the head. MATERIAL AND METHODS: Retrospective review of 166 M-M hip prostheses operated between 2002 and 2011. Sixty five ruled out for different causes (death, loss of follow-up, no current ion control, no radiography or others), leaving a sample of 101 patients to be analysed. Follow-up time, cup inclination angle, blood ion level, Harris Hip Score (HHS), and complications were recorded. RESULTS: One hundred and one patients (25 women and 76 men), 55 years of average age (between 26 and 70), of these 8 were surface prostheses and 93 total prostheses. The mean follow-up time was 10 years (between 5 and 17 years). The mean head diameter was 46.25 (between 38 and 56). The mean inclination of the butts was 45.7° (between 26° and 71°). The correlation force between the verticality of the cup and the increase in ions is moderate r=0.31 for Cr and slight r=0.25 for Co. The correlation force between head size and ion increase is weak and inverse r=-0.14 for Cr and r=0.1 for Co. Five patients (4.9%) required revision (2 [1%] due to increased ions with pseudotumor). The mean time to revision was 6.5 years in which the ions increased. The mean HHS was 94.01 (between 55.8 and 100). In the review of patients, we found 3 with a significant increase in ions who had not followed controls, all 3 had an HHS of 100. The angles of the acetabular components were 69°, 60° and 48° and the diameter of the head was 48.42 and 48mm, respectively. DISCUSSION AND CONCLUSIONS: M-M prostheses have been a valid option in patients with high functional demand. A bi-annual analytical follow-up is recommended, since in our case we have detected 3 patients with HHS 100 who presented unacceptable elevation of cobalt >20µm/l (according to SECCA) of the ions and 4 with very abnormal elevation of cobalt ≥10µm/l (according to SECCA), all of them with cup orientation angles >50°. With our review we can conclude that there is a moderate correlation between the verticality of the acetabular component and the increase in blood ions and that the follow-up of this patient with angles >50° is essential.

Metal on metal total hip arthroplasty: Correlation between inclination of the acetabular and metal ion levels. / Artroplastias metal-metal en cadera: correlación entre el aumento de iones y el ángulo del componente acetabular.

Due to their low friction index, hip arthroplasties with metal-metal (M-M) friction torque have been an attractive option in young patients with high functional demand, currently they have suffered a decrease in their use due to the complications of some models and physiological reactions adverse reactions related to the elevation of metal ions in the blood. Our objective is to review the patients with M-M pair operated in our center, correlating the ion level with the position of the acetabular component and with the size of the head. MATERIAL AND METHODS: Retrospective review of 166 M-M hip prostheses operated between 2002 and 2011. Sixty five ruled out for different causes (death, loss of follow-up, no current ion control, no radiography or others), leaving a sample of 101 patients to be analyzed. Follow-up time, cup inclination angle, blood ion level, Harris Hip Score (HHS), and complications were recorded. RESULTS: One hundred and one patients (25 women and 76 men), 55years of average age (between 26 and 70), of these 8 were surface prostheses and 93 total prostheses. The mean follow-up time was 10years (between 5 and 17years). The mean head diameters was 46.25 (between 38 and 56). The mean inclination of the butts was 45.7° (between 26° and 71°). The correlation force between the verticality of the cup and the increase in ions is moderate r=0.31 for Cr and slight r=0.25 for Co. The correlation force between head size and ion increase is weak and inverse r=-0.14 for Cr and r=0.1 for Co. Five patients (4.9%) required revision (2 [1%] due to increased ions with pseudotumor). The mean time to revision was 6.5years in which the ions increased. The mean HHS was 94.01 (between 55.8 and 100). In the review of patients, we found 3 with a significant increase in ions who had not followed controls, all 3 had an HHS of 100. The angles of the acetabular components were 69°, 60° and 48° and the diameter of the head was 48.42 and 48mm, respectively. DISCUSSION AND CONCLUSIONS: M-M prostheses have been a valid option in patients with high functional demand. A bi-annual analytical follow-up is recommended, since in our case we have detected 3patients with HHS100 who presented unacceptable elevation of cobalt >20µm/L (according to SECCA) of the ions and 4 with very abnormal elevation of cobalt ≥10µm/L (according to SECCA), all of them with cup orientation angles >50°. With our review we can conclude that there is a moderate correlation between the verticality of the acetabular component and the increase in blood ions and that the follow-up of this patient with angles >50° is essential.

Telephone consultation service in orthopedics during COVID-19 pandemic.

BACKGROUND AND AIM: The current COVID-19 pandemic scenario has driven surgical departments to a transformation.The worldwide spread of the disease has led to a public health quarantine where health care professionals are at high risk of infection. In this context, telemedicine has been promoted and scaled up to reduce the risk of transmission. This study aims to demonstrate that a combined framework based on telematics and in-person clinical encounter not only ensures medical care but the safety of healthcare professionals and patients. MATERIAL AND METHOD: Descriptive observational study on the follow-up of patients during the COVID19 Pandemic, combining telephone and traditional. RESULTS: A total of 5031 telephone calls were made, differentiating between medical referrals, specialised primary care visits, and outpatient consultation.They were classified as successful, required an in-person visit, or no successful telephone contact. Furthermore, we divided them into 2 groups: resolved and unresolved.53% of all telematic visits were successful. CONCLUSIONS: Telematic medical systems are a feasible option in a orthopedics department and an interesting resource to preserve once the pandemic is resolved. Future lines of research should be opened to improve system success, analyze its cost-effectiveness ratio, and correct any legal conflicts that may exist.

ANTECEDENTES Y OBJETIVO: Durante la pandemia COVID-19 la actividad de los servicios quirúrgicos se ha visto obligada a adaptarse y transformarse. La telemedicina se está implantando como nunca antes en esta nueva situación en la que los pacientes están confinados y los profesionales sanitarios presentan riesgo de infectarseEl objetivo es mostrar que una reestructuración combinada telemática y presencial de las visitas permite asegurar la asistencia médica, garantizando la protección del personal sanitario y de los pacientes. MATERIAL Y MÉTODO: Estudio descriptivo observacional sobre el seguimiento de pacientes durante la Pandemia COVID combinando la consulta telefónica con la presencial. RESULTADOS: Se realizaron un total de 5031 llamadas telefónicas diferenciando entre Derivaciones, Visitas de atención primaria especializada y Consulta externa hospitalaria.Se registraron como efectivas, tributarias de visita presencial y no se logra contacto telefónico. Y las dividimos en 2 grupos resueltas y no resueltas.Del total de visitas no presenciales telefónicas fueron efectivas un 53%. CONCLUSIONES: La medicina telemática es una opción factible en un servicio de traumatología y de manera adecuada será una opción interesante de mantener tras la pandemia.Futuras líneas de investigación deberían ser abiertas para mejorar la capacidad de resolución de este sistema, analizar su relación coste-efectividad y subsanar los conflictos legales que pudieran existir.

Telephone consultation service in orthopedics during COVID-19 pandemic. / Consultoría telefónica en COT durante la pandemia por COVID-19. ¿Ha venido para quedarse?

BACKGROUND AND AIM: The current COVID-19 pandemic scenario has driven surgical departments to a transformation. The worldwide spread of the disease has led to a public health quarantine where health care professionals are at high risk of infection. In this context, telemedicine has been promoted and scaled up to reduce the risk of transmission. This study aims to demonstrate that a combined framework based on telematics and in-person clinical encounter not only ensures medical care but the safety of healthcare professionals and patients. MATERIAL AND METHOD: Descriptive observational study on the follow-up of patients during the COVID19 Pandemic, combining telephone and traditional. RESULTS: A total of 5031 telephone calls were made, differentiating between medical referrals, specialized primary care visits, and outpatient consultation. They were classified as successful, required an in-person visit, or no successful telephone contact. Furthermore, we divided them into 2 groups: resolved and unresolved. 53% of all telematic visits were successful. CONCLUSIONS: Telematic medical systems are a feasible option in a orthopedics department and an interesting resource to preserve once the pandemic is resolved. Future lines of research should be opened to improve system success, analyze its cost-effectiveness ratio, and correct any legal conflicts that may exist.

Consultoría telefónica en COT durante la pandemia por COVID-19. ¿Ha venido para quedarse? / Telephone consultation service in orthopedics during COVID-19 pandemic

ANTECEDENTES Y OBJETIVO: Durante la pandemia COVID-19, la actividad de los servicios quirúrgicos se ha visto obligada a adaptarse y transformarse. La telemedicina se está implantando como nunca antes en esta nueva situación, en la que los pacientes están confinados y los profesionales sanitarios presentan riesgo de infectarse. El objetivo es mostrar que una reestructuración combinada telemática y presencial de las visitas, permite asegurar la asistencia médica, garantizando la protección del personal sanitario y de los pacientes. MATERIAL Y MÉTODO: Estudio descriptivo observacional sobre el seguimiento de pacientes durante la pandemia por COVID-19, combinando la consulta telefónica con la presencial. RESULTADOS: Se realizaron un total de 5.031 llamadas telefónicas, diferenciando entre derivaciones, visitas de atención primaria especializada y consulta externa hospitalaria. Se registraron como: efectivas, tributarias de visita presencial y no se logra contacto telefónico. Y las dividimos en dos grupos: resueltas y no resueltas. Del total de visitas no presenciales telefónicas fueron efectivas un 53%. CONCLUSIONES: La medicina telemática es una opción factible en un servicio de traumatología, y de manera adecuada será una opción interesante de mantener tras la pandemia. Futuras líneas de investigación deberían ser abiertas para mejorar la capacidad de resolución de este sistema, analizar su relación coste-efectividad y subsanar los conflictos legales que pudieran existir

BACKGROUND AND AIM: The current COVID-19 pandemic scenario has driven surgical departments to a transformation. The worldwide spread of the disease has led to a public health quarantine where health care professionals are at high risk of infection. In this context, telemedicine has been promoted and scaled up to reduce the risk of transmission. This study aims to demonstrate that a combined framework based on telematics and in-person clinical encounter not only ensures medical care but the safety of healthcare professionals and patients. MATERIAL AND METHOD: Descriptive observational study on the follow-up of patients during the COVID19 Pandemic, combining telephone and traditional. RESULTS: A total of 5031 telephone calls were made, differentiating between medical referrals, specialized primary care visits, and outpatient consultation. They were classified as successful, required an in-person visit, or no successful telephone contact. Furthermore, we divided them into 2 groups: resolved and unresolved. 53% of all telematic visits were successful. CONCLUSIONS: Telematic medical systems are a feasible option in a orthopedics department and an interesting resource to preserve once the pandemic is resolved. Future lines of research should be opened to improve system success, analyze its cost-effectiveness ratio, and correct any legal conflicts that may exist