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1.
Rev Esp Cir Ortop Traumatol ; 66(3): 208-214, 2022.
Article in English, Spanish | MEDLINE | ID: mdl-35590438

ABSTRACT

INTRODUCTION: Cement restrictors (CRs) are devices that allow occlusion of the femoral canal in order to obtain greater interdigitation of the cement between the bone and a better pressurization, which generates an increase in the survival of cemented stems. The aim of this study was to evaluate the efficacy of the different CRs used and propose a classification of this device. MATERIALS AND METHODS: An experimental study was carried out, where 7 CR references of different designs and manufacturers were taken. Later, tests were carried out on 9 chlorinated polyvinyl chloride tubes for each reference, to achieve a total of 63 tests. RESULTS: In our study, 34.9% of the CRs in ultra high molecular weight polyethylene failed, presenting migration and allowing cement to leak while none of the gelatin RC failed. CONCLUSION: The RC with an umbrella design proved to be the less effective, presented a higher incidence of migration and cement leakage, while the gelatin CRs were the best performers. Based on the results of this study, an analysis of the CR design was carried out and a classification was proposed that divides these devices into 2 types.

2.
Rev. esp. cir. ortop. traumatol. (Ed. impr.) ; 66(3): T208-T214, May-Jun 2022. ilus, tab, graf
Article in English | IBECS | ID: ibc-204977

ABSTRACT

Introduction: Cement restrictors (CRs) are devices that allow occlusion of the femoral canal in order to obtain greater interdigitation of the cement between the bone and a better pressurization, which generates an increase in the survival of cemented stems. The aim of this study was to evaluate the efficacy of the different CRs used and propose a classification of this device. Materials and methods: An experimental study was carried out, where 7 CR references of different designs and manufacturers were taken. Later, tests were carried out on 9 chlorinated polyvinyl chloride tubes for each reference, to achieve a total of 63 tests. Results: In our study, 34.9% of the CRs in ultra high molecular weight polyethylene failed, presenting migration and allowing cement to leak while none of the gelatin RC failed. Conclusion: The RC with an umbrella design proved to be the less effective, presented a higher incidence of migration and cement leakage, while the gelatin CRs were the best performers. Based on the results of this study, an analysis of the CR design was carried out and a classification was proposed that divides these devices into 2 types.(AU)


Introducción: Los restrictores de cemento (RC) son dispositivos que permiten la oclusión del canal femoral con el fin de obtener una mayor interdigitación del cemento en el hueso y una mejor presurización, lo que genera un incremento en la supervivencia de los vástagos cementados. El objetivo de este estudio fue evaluar la eficacia de los diferentes RC utilizados y proponer una clasificación de este dispositivo. Materiales y métodos: Se realizó un estudio experimental, donde se tomaron 7 referencias de RC de diferentes diseños y fabricantes. Posteriormente se hicieron pruebas en 9 tubos de policloruro de vinilo clorado por cada referencia para conseguir un total de 63 pruebas. Resultados: El 34,9% de los RC de nuestro estudio presentaron migración y permitieron la fuga de cemento; todos estos RC eran de polietileno de ultra alto peso molecular (PUAPM), mientras que ninguno de los RC de gelatina falló. Conclusión: Los RC con diseño en paraguas demostraron ser los menos eficaces, presentando una mayor incidencia de migración y fuga de cemento, mientras que los RC de gelatina fueron los de mejor desempeño. Basado en los resultados de este estudio, se realizó un análisis del diseño de los RC y se propuso una clasificación que divide estos dispositivos en 2 tipos.(AU)


Subject(s)
28573 , Bone Cements , Arthroplasty , Arthroplasty, Replacement, Hip , Hip Injuries/surgery , Traumatology , Orthopedics
3.
Rev. esp. cir. ortop. traumatol. (Ed. impr.) ; 66(3): 208-214, May-Jun 2022. ilus, tab, graf
Article in Spanish | IBECS | ID: ibc-204978

ABSTRACT

Introducción: Los restrictores de cemento (RC) son dispositivos que permiten la oclusión del canal femoral con el fin de obtener una mayor interdigitación del cemento en el hueso y una mejor presurización, lo que genera un incremento en la supervivencia de los vástagos cementados. El objetivo de este estudio fue evaluar la eficacia de los diferentes RC utilizados y proponer una clasificación de este dispositivo. Materiales y métodos: Se realizó un estudio experimental, donde se tomaron 7 referencias de RC de diferentes diseños y fabricantes. Posteriormente se hicieron pruebas en 9 tubos de policloruro de vinilo clorado por cada referencia para conseguir un total de 63 pruebas. Resultados: El 34,9% de los RC de nuestro estudio presentaron migración y permitieron la fuga de cemento; todos estos RC eran de polietileno de ultra alto peso molecular (PUAPM), mientras que ninguno de los RC de gelatina falló. Conclusión: Los RC con diseño en paraguas demostraron ser los menos eficaces, presentando una mayor incidencia de migración y fuga de cemento, mientras que los RC de gelatina fueron los de mejor desempeño. Basado en los resultados de este estudio, se realizó un análisis del diseño de los RC y se propuso una clasificación que divide estos dispositivos en 2 tipos.(AU)


Introduction: Cement restrictors (CRs) are devices that allow occlusion of the femoral canal in order to obtain greater interdigitation of the cement between the bone and a better pressurization, which generates an increase in the survival of cemented stems. The aim of this study was to evaluate the efficacy of the different CRs used and propose a classification of this device. Materials and methods: An experimental study was carried out, where 7 CR references of different designs and manufacturers were taken. Later, tests were carried out on 9 chlorinated polyvinyl chloride tubes for each reference, to achieve a total of 63 tests. Results: In our study, 34.9% of the CRs in ultra high molecular weight polyethylene failed, presenting migration and allowing cement to leak while none of the gelatin RC failed. Conclusion: The RC with an umbrella design proved to be the less effective, presented a higher incidence of migration and cement leakage, while the gelatin CRs were the best performers. Based on the results of this study, an analysis of the CR design was carried out and a classification was proposed that divides these devices into 2 types.(AU)


Subject(s)
28573 , Bone Cements , Arthroplasty , Arthroplasty, Replacement, Hip , Hip Injuries/surgery , Traumatology , Orthopedics
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