Prognosis of the contralateral hip after primary total hip replacement: Can it be predicted? / ¿Se puede predecir el pronóstico de la cadera contralateral tras una artroplastia total de cadera?

INTRODUCTION: Coxarthrosis is one of the most frequent and disabling pathologies. 20% of individuals over 60 years of age will develop symptomatic coxarthrosis and 10% of them will need a hip replacement; it is probably one of the orthopaedic procedures that most increases quality of life. When we recommend arthroplasty in clinical practice, patients often ask about the prognosis of their other hip. Will it deteriorate in the same way? Will it be necessary to replace it? When? The aim of the study is to determine if there is any variable or radiological sign that predicts the medium-term prognosis of the contralateral hip after total hip arthroplasty. MATERIAL AND METHODS: A retrospective review of patients who underwent total hip arthroplasty in our hospital during 2011 and 2012 was carried out, with a total of 543 patients. The coxarthrosis degree at X-ray was determined at the time of the first arthroplasty and at regular intervals during follow-up, according to the JOA and Tönnis classifications, analyzing each of the items included in these classifications. Its relation with the progression of osteoarthritis and the need of contralateral hip replacement was established. RESULTS AND CONCLUSIONS: A progression of osteoarthritis of the contralateral hip could be expected in the next 3 years in 10% of patients. This progression will be greater and faster in those with JOA grade III-IV/Tönnis grade II-III, especially, in those with greater joint narrowing and femoral head shape score, and can reach between 25 and 30% of patients. The initial JOA/Tönnis degree is a predictive factor for requiring a hip replacement on the contralateral side.

[Translated article] Prognosis of the contralateral hip after primary total hip replacement: Can it be predicted?

INTRODUCTION: Coxarthrosis is one of the most frequent and disabling pathologies. 20% of individuals over 60 years of age will develop symptomatic coxarthrosis and 10% of them will need a hip replacement; it is probably one of the orthopaedic procedures that most increases quality of life. When we recommend arthroplasty in clinical practice, patients often ask about the prognosis of their other hip. Will it deteriorate in the same way? Will it be necessary to replace it? When? The aim of the study is to determine if there is any variable or radiological sign that predicts the medium-term prognosis of the contralateral hip after total hip arthroplasty. MATERIAL AND METHODS: A retrospective review of patients who underwent total hip arthroplasty in our hospital during 2011 and 2012 was carried out, with a total of 543 patients. The coxarthrosis degree at X-ray was determined at the time of the first arthroplasty and at regular intervals during follow-up, according to the JOA and Tönnis classifications, analyzing each of the items included in these classifications. Its relation with the progression of osteoarthritis and the need of contralateral hip replacement was established. RESULTS AND CONCLUSIONS: A progression of osteoarthritis of the contralateral hip could be expected in the next 3 years in 10% of patients. This progression will be greater and faster in those with JOA grade III-IV/Tönnis grade II-III, especially, in those with greater joint narrowing and femoral head shape score, and can reach between 25 and 30% of patients. The initial JOA/Tönnis degree is a predictive factor for requiring a hip replacement on the contralateral side.

Ossifying myositis in the infant. About a case. / Miositis osificante en el lactante. A propósito de un caso.

Myositis ossificans is a benign disorder characterized by the formation of heterotopic bone in skeletal muscle or soft tissues. It is extremely rare in children, <1% of cases occur in children under 10 years. We present a 17-day-old boy that, after 10 days of Intermediate Care Unit stay, was referred to our hospital for a developmental dysplasia of the hip. On clinical examination, he had swelling on the left thigh and increase in size compared to the contralateral one, therefore was admitted for studying. Imaging findings including plain radiographs, CT, MRI and bone scintigraphy, as well as treatment performed, are described. To the best of our knowledge, is the youngest case reported in the literature.

¿Se puede predecir el pronóstico de la cadera contralateral tras una artroplastia total de cadera? / Prognosis of the contralateral hip after primary total hip replacement: Can it be predicted?

Introducción: La coxartrosis es una de las patologías más frecuentes e incapacitantes. El 20% de los mayores de 60 años desarrollará coxartrosis sintomática y el 10% requerirá una prótesis total de cadera. La artroplastia total de cadera es uno de los procedimientos quirúrgicos que más aumenta la calidad de vida de estos pacientes. Cuando recomendamos la artroplastia en la práctica clínica, los pacientes a menudo preguntan sobre el pronóstico de su otra cadera: ¿Se deteriorará de la misma forma? ¿Será necesario operarla? ¿Cuándo? El objetivo es determinar si existe alguna variable o signo radiológico que prediga el pronóstico a medio plazo de la cadera contralateral tras una artroplastia total de cadera. Material y métodos: Se realizó un estudio retrospectivo de pacientes intervenidos de artroplastia total de cadera en nuestro hospital durante los años 2011 y 2012, con un total de 543 pacientes. Se determinó el grado de coxartrosis, según las clasificaciones JOA y Tönnis, en la radiografía de ambas caderas en el momento de la primera artroplastia y a intervalos regulares durante el seguimiento, analizando cada uno de los ítems incluidos en estas clasificaciones. Se estableció la relación de estos hallazgos radiográficos con la progresión de la artrosis y la necesidad de artroplastia contralateral. Resultados y conclusiones: Podría esperarse una progresión de la artrosis de la cadera contralateral en los próximos 3 años en el 10% de los pacientes. Esta progresión será mayor y más rápida en aquellos con grado JOA III-IV/Tönnis II-III y, especialmente, en aquellos con mayor estrechamiento articular y mayor alteración de la cabeza femoral, pudiendo alcanzar entre el 25 y el 30% de los pacientes. El grado de JOA/Tönnis inicial es un factor predictor de necesitar una prótesis de cadera contralateral.

Introduction: Coxarthrosis is one of the most frequent and disabling pathologies. 20% of individuals over 60 years of age will develop symptomatic coxarthrosis and 10% of them will need a hip replacement; it is probably one of the orthopaedic procedures that most increases quality of life. When we recommend arthroplasty in clinical practice, patients often ask about the prognosis of their other hip. Will it deteriorate in the same way? Will it be necessary to replace it? When? The aim of the study is to determine if there is any variable or radiological sign that predicts the medium-term prognosis of the contralateral hip after total hip arthroplasty. Material and methods: A retrospective review of patients who underwent total hip arthroplasty in our hospital during 2011 and 2012 was carried out, with a total of 543 patients. The coxarthrosis degree at X-ray was determined at the time of the first arthroplasty and at regular intervals during follow-up, according to the JOA and Tönnis classifications, analyzing each of the items included in these classifications. Its relation with the progression of osteoarthritis and the need of contralateral hip replacement was established. Results and conclusions: A progression of osteoarthritis of the contralateral hip could be expected in the next 3 years in 10% of patients. This progression will be greater and faster in those with JOA grade III–IV/Tönnis grade II–III, especially, in those with greater joint narrowing and femoral head shape score, and can reach between 25 and 30% of patients. The initial JOA/Tönnis degree is a predictive factor for requiring a hip replacement on the contralateral side.(AU)

[Translated article] Prognosis of the contralateral hip after primary total hip replacement: Can it be predicted? / ¿Se puede predecir el pronóstico de la cadera contralateral tras una artroplastia total de cadera?

Introduction: Coxarthrosis is one of the most frequent and disabling pathologies. 20% of individuals over 60 years of age will develop symptomatic coxarthrosis and 10% of them will need a hip replacement; it is probably one of the orthopaedic procedures that most increases quality of life. When we recommend arthroplasty in clinical practice, patients often ask about the prognosis of their other hip. Will it deteriorate in the same way? Will it be necessary to replace it? When? The aim of the study is to determine if there is any variable or radiological sign that predicts the medium-term prognosis of the contralateral hip after total hip arthroplasty. Material and methods: A retrospective review of patients who underwent total hip arthroplasty in our hospital during 2011 and 2012 was carried out, with a total of 543 patients. The coxarthrosis degree at X-ray was determined at the time of the first arthroplasty and at regular intervals during follow-up, according to the JOA and Tönnis classifications, analyzing each of the items included in these classifications. Its relation with the progression of osteoarthritis and the need of contralateral hip replacement was established. Results and conclusions: A progression of osteoarthritis of the contralateral hip could be expected in the next 3 years in 10% of patients. This progression will be greater and faster in those with JOA grade III–IV/Tönnis grade II–III, especially, in those with greater joint narrowing and femoral head shape score, and can reach between 25 and 30% of patients. The initial JOA/Tönnis degree is a predictive factor for requiring a hip replacement on the contralateral side.(AU)

Introducción: La coxartrosis es una de las patologías más frecuentes e incapacitantes. El 20% de los mayores de 60 años desarrollará coxartrosis sintomática y el 10% requerirá una prótesis total de cadera. La artroplastia total de cadera es uno de los procedimientos quirúrgicos que más aumenta la calidad de vida de estos pacientes. Cuando recomendamos la artroplastia en la práctica clínica, los pacientes a menudo preguntan sobre el pronóstico de su otra cadera: ¿Se deteriorará de la misma forma? ¿Será necesario operarla? ¿Cuándo? El objetivo es determinar si existe alguna variable o signo radiológico que prediga el pronóstico a medio plazo de la cadera contralateral tras una artroplastia total de cadera. Material y métodos: Se realizó un estudio retrospectivo de pacientes intervenidos de artroplastia total de cadera en nuestro hospital durante los años 2011 y 2012, con un total de 543 pacientes. Se determinó el grado de coxartrosis, según las clasificaciones JOA y Tönnis, en la radiografía de ambas caderas en el momento de la primera artroplastia y a intervalos regulares durante el seguimiento, analizando cada uno de los ítems incluidos en estas clasificaciones. Se estableció la relación de estos hallazgos radiográficos con la progresión de la artrosis y la necesidad de artroplastia contralateral. Resultados y conclusiones: Podría esperarse una progresión de la artrosis de la cadera contralateral en los próximos 3 años en el 10% de los pacientes. Esta progresión será mayor y más rápida en aquellos con grado JOA III-IV/Tönnis II-III y, especialmente, en aquellos con mayor estrechamiento articular y mayor alteración de la cabeza femoral, pudiendo alcanzar entre el 25 y el 30% de los pacientes. El grado de JOA/Tönnis inicial es un factor predictor de necesitar una prótesis de cadera contralateral.

Interimplant femoral fractures: risk factors, treatment and evolution. / Fracturas interimplante de fémur: factores de riesgo, tratamiento y evolución.

OBJECTIVE: The aim of this study is to determine the risk factors involved in the development of these fractures and analyze the treatments used as well as their influence on the clinical and functional prognosis of patients. MATERIALS AND METHODS: We made an observational, retrospective case-control study, with a sample of 38 patients (40 femoral bones) operated in our hospital, who had two femoral ipsilateral implants, proximal and distal. We found 10 cases of interimplant fracture and 28 patients who had not suffered a fracture (2 of them had bilateral implants). We analyzed the influence of different variables, such as age, gender, comorbidities, radiological variables, type of treatments employed, clinical evolution, etc. RESULTS: the female sex was predominant in both groups, 80.7 was the average age. Osteoporosis was statistically significant (P=.007) for the development of these fractures. We did not find statistical significance in the radiological variables. Surgical treatment was the most frequent, and the plate of osteosynthesis the most employed option. We found a death rate of 40% at 4 years. Although all fractures healed, the survivors' ambulation ability was reduced. CONCLUSIONS: interimplant fractures are predominant in elderly women. Osteoporosis is a statistically significant risk factor. Despite optimal treatment and fracture healing, functional outcomes were decreased. Specific classification systems and therapeutic algorithms are necessary to improve the management and prognosis of these patients.

Fracturas interimplante de fémur: factores de riesgo, tratamiento y evolución / Interimplant femoral fractures: risk factors, treatment and evolution

Objetivo: Determinar los factores de riesgo implicados en el desarrollo de las fracturas interimplante de fémur, analizar los tratamientos empleados en las mismas y su influencia en el pronóstico clínico y funcional de los pacientes. Material y métodos: Estudio analítico, observacional, tipo casos y controles en una muestra de 38 pacientes (40 fémures) intervenidos en nuestro centro, con presencia de 2 implantes femorales ipsilaterales, proximal y distal. Se han registrado 10 casos de fractura interimplante frente a 28 pacientes sin fractura, y se ha analizado la influencia de diferentes variables, como la edad, el sexo, las comorbilidades, las variables radiológicas, los tipos de tratamiento empleados, la evolución, etc. Resultados: El sexo femenino fue predominante en ambos grupos, con 80,7 años de edad media. La osteoporosis resultó estadísticamente significativa (p=0,007) para el desarrollo de estas fracturas. Las variables radiológicas no mostraron significación estadística. El tratamiento quirúrgico fue el más habitual, siendo la osteosíntesis con placa la opción más utilizada. La mortalidad fue del 40% a los 4 años. Aunque todas las fracturas consolidaron, se objetivó un deterioro significativo en la deambulación en los supervivientes. Conclusiones: Son fracturas predominantes en mujeres de edad avanzada. La osteoporosis constituye un factor de riesgo estadísticamente significativo. A pesar de un tratamiento óptimo y buena evolución de las fracturas se observó un deterioro en la capacidad funcional de los pacientes. Son necesarios sistemas de clasificación y algoritmos terapéuticos específicos que optimicen el manejo y pronóstico de estos pacientes

Objective: The aim of this study is to determine the risk factors involved in the development of these fractures and analyze the treatments used as well as their influence on the clinical and functional prognosis of patients. Materials and methods: We made an observational, retrospective case-control study, with a sample of 38 patients (40 femoral bones) operated in our hospital, who had two femoral ipsilateral implants, proximal and distal. We found 10 cases of interimplant fracture and 28 patients who had not suffered a fracture (2 of them had bilateral implants). We analyzed the influence of different variables, such as age, gender, comorbidities, radiological variables, type of treatments employed, clinical evolution, etc. Results: the female sex was predominant in both groups, 80.7 was the average age. Osteoporosis was statistically significant (P=.007) for the development of these fractures. We did not find statistical significance in the radiological variables. Surgical treatment was the most frequent, and the plate of osteosynthesis the most employed option. We found a death rate of 40% at 4 years. Although all fractures healed, the survivors' ambulation ability was reduced. Conclusions: interimplant fractures are predominant in elderly women. Osteoporosis is a statistically significant risk factor. Despite optimal treatment and fracture healing, functional outcomes were decreased. Specific classification systems and therapeutic algorithms are necessary to improve the management and prognosis of these patients