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1.
Artrosc. (B. Aires) ; 27(1): 1-4, 2020.
Article in Spanish | LILACS, BINACIS | ID: biblio-1118164

ABSTRACT

Sabemos que la meniscectomía lleva al desarrollo temprano de osteoartritis, es por ello que en la actualidad se tiende a reparar más que a resecar meniscos. La reparación meniscal Dentro-Fuera es una técnica que ha probado ser efectiva tanto así que sigue siendo el estándar de oro. Aunque la técnica todo dentro ha sido mejorada, la técnica Dentro-Fuera ofrece ventajas como el poder reparar diferentes tipos de patrones de lesiones así como utilizar diferentes tipos de puntos y suturas. La desventaja es que requiere de una incisión extra y una adecuada disección de los tejidos blandos para evitar complicaciones iatrogénicas y anudar los puntos directamente sobre la cápsula. En el artículo describimos la técnica que utilizamos


It is well known that meniscectomy leads to the early development of knee arthritis, that is the reason that nowadays we favour meniscal repair rather than meniscectomy. The Inside-out meniscal repair technique has proven to be effective, has passed the test of time and has withstanded as the gold standard of meniscal repair techniques. Even when the All-inside technique has improved the inside-out offers advantages like the possibility of repairing all tear patterns and the chance of using several stitch configurations and different kinds of sutures. The main disadvantage is that it requires an extra incision and some deep dissection to tie the knots against the capsule. We describe the technique we currently use


Subject(s)
Arthroscopy/methods , Menisci, Tibial/surgery , Knee Joint/surgery
2.
Rev Invest Clin ; 66 Suppl 1: S100-10, 2014 Jul.
Article in English | MEDLINE | ID: mdl-25264790

ABSTRACT

Complete rupture of the anterior cruciate ligament (ACL) is a common problem in orthopedics. At present, there are many techniques to reconstruct ligaments, which include the use of autografts, allografts, and, in some cases, artificial ligaments. The latter have not provided good results in the short, medium, and long term. The purpose of present study was to engineer functional biological tissue that could potentially be used to replace the knee ligaments by applying tissue engineering techniques and mechanical stimulation with a bioreactor, promoting cellular differentiation and matrix synthesis. In this preliminary study, the new tissue was characterized with mechanical tests and biological tests (viability and immunochemistry), comparing their behavior with that of the native tissue. Mechanical and biological tests proved that mechanical stimulation administered with a bioreactor maintains the ligament fibroblast phenotype and promotes synthesis of the extracellular matrix.


Subject(s)
Anterior Cruciate Ligament Reconstruction/methods , Anterior Cruciate Ligament/surgery , Bioreactors , Tissue Engineering/methods , Animals , Anterior Cruciate Ligament Injuries , Cell Differentiation/physiology , Extracellular Matrix/metabolism , Fibroblasts/metabolism , In Vitro Techniques , Swine
3.
Artrosc. (B. Aires) ; 21(2): 37-44, jun. 2014. ilus, tab
Article in Spanish | BINACIS | ID: bin-131848

ABSTRACT

Introducción: La reconstrucción del LCA es uno de los procedimientos ortopédicos más comunes. Los tornillos por interferencia biocompuestos están integrados por un polímero y algún material osteoconductor, cuya función es promover el crecimiento óseo en el sitio del implante al mismo tiempo que éste se reabsorbe. Material y método: se incluyeron un total de 28 pacientes, operados de reconstrucción artroscópica de LCA fijados con tornillo Milagro y tornillo bio-intrafix. Todos los pacientes fueron valorados con TAC, se realizaron mediciones del diámetro del túnel tibial en el segmento proximal, medio y distal, con trazo libre utilizando por lo menos 10 puntos de referencia para cada trazo. Así como una valoración subjetiva en relación a la presencia o ausencia de esclerosis adyacente al tornillo. Resultados: del total de la muestra, 12 pacientes no presentaron datos de osteointegración y 16 pacientes sí, encontrándose una asociación significativa entre osteointegración y el tornillo Milagro (p=0.006). En cuanto a degradación, no se observó ningún paciente sin datos de degradación. 53 por ciento se catalogaron como degradación parcial y 47 por ciento como total, de éstos el 76.9 por ciento pertenecían al grupo con tornillo Milagro encontrándose así una asociación entre el tornillo Milagro y degradación (p=0.006). Discusión y conclusiones: el tornillo Milagro fue el que se asoció con osteointegración. El área total en el túnel tibial incrementó, siendo éste porcentaje mayor para el tornillo bio-intrafix. Sin embargo, no se encontró una relación lineal entre el tiempo transcurrido desde la cirugía y el cambio en el área del túnel tibial; sugerente de que existen otros factores que influyen en este proceso. A pesar de los resultados clínicos satisfactorios, la adición de una cerámica osteoconductora no resultó en osteointegración completa de ninguno de los tornillos. Nivel de evidencia: III. Tipo de estudio: Cuasiexperimental, transversal, ambilectivo.(AU)


Introduction: The ACL reconstruction is one of the most common procedures in orthopedics. The bio-interference screws are made of a polymer plus an osteoconductive ceramic which function is to promote bone formation at the site of the implant while it reabsorbs. Methods: 28 patient were included, all were submitted to an arthroscopic ACL reconstruction procedure. CT scans were made in all of them, the diameter of the tibial tunnel was measured at the proximal, medial, and distal segments by a 10 point reference free hand line. Also a subjective evaluation was made in relation to the presence of adjacent sclerosis at the screw. Results: from the total sample, 12 patients did not show signs of osseointegration, 16 did, finding a significant association between osseointegration and the Milagro screw (p=0.006). None of the patients had absence of degradation. 53% were classified as partial degradation and 47% as total, from these the 76.9% belong to the Milagro screw group resulting in an association between the Milagro screw and total degradation (p=0.006). Discussion and conclusions: the Milagro screw was associated with osseointegration. The total area of the tibial tunnel increased, being this percentage major for the bio-intrafix screw. Hence, a linear relation was not found between the time from intervention and the change at the area of the tibial tunnel though, suggesting there are other factors that influence this process. Beside the satisfactory clinical results, the addition of an osseoconductive ceramic did not result in a complete osseointegration of neither screw. Level of evidence: III. Type of study: Cuasi experimental, transversal, ambilective.(AU)


Subject(s)
Middle Aged , Anterior Cruciate Ligament/diagnostic imaging , Anterior Cruciate Ligament/surgery , Tomography, X-Ray Computed , Osseointegration , Arthroscopy/methods , Absorbable Implants , Knee Injuries/diagnostic imaging , Bone Screws , Knee Injuries/surgery , Treatment Outcome
4.
Artrosc. (B. Aires) ; 21(2): 37-44, jun. 2014. ilus, tab
Article in Spanish | LILACS | ID: lil-716743

ABSTRACT

Introducción: La reconstrucción del LCA es uno de los procedimientos ortopédicos más comunes. Los tornillos por interferencia biocompuestos están integrados por un polímero y algún material osteoconductor, cuya función es promover el crecimiento óseo en el sitio del implante al mismo tiempo que éste se reabsorbe. Material y método: se incluyeron un total de 28 pacientes, operados de reconstrucción artroscópica de LCA fijados con tornillo Milagro y tornillo bio-intrafix. Todos los pacientes fueron valorados con TAC, se realizaron mediciones del diámetro del túnel tibial en el segmento proximal, medio y distal, con trazo libre utilizando por lo menos 10 puntos de referencia para cada trazo. Así como una valoración subjetiva en relación a la presencia o ausencia de esclerosis adyacente al tornillo. Resultados: del total de la muestra, 12 pacientes no presentaron datos de osteointegración y 16 pacientes sí, encontrándose una asociación significativa entre osteointegración y el tornillo Milagro (p=0.006). En cuanto a degradación, no se observó ningún paciente sin datos de degradación. 53 por ciento se catalogaron como degradación parcial y 47 por ciento como total, de éstos el 76.9 por ciento pertenecían al grupo con tornillo Milagro encontrándose así una asociación entre el tornillo Milagro y degradación (p=0.006). Discusión y conclusiones: el tornillo Milagro fue el que se asoció con osteointegración. El área total en el túnel tibial incrementó, siendo éste porcentaje mayor para el tornillo bio-intrafix. Sin embargo, no se encontró una relación lineal entre el tiempo transcurrido desde la cirugía y el cambio en el área del túnel tibial; sugerente de que existen otros factores que influyen en este proceso. A pesar de los resultados clínicos satisfactorios, la adición de una cerámica osteoconductora no resultó en osteointegración completa de ninguno de los tornillos. Nivel de evidencia: III. Tipo de estudio: Cuasiexperimental, transversal, ambilectivo.


Introduction: The ACL reconstruction is one of the most common procedures in orthopedics. The bio-interference screws are made of a polymer plus an osteoconductive ceramic which function is to promote bone formation at the site of the implant while it reabsorbs. Methods: 28 patient were included, all were submitted to an arthroscopic ACL reconstruction procedure. CT scans were made in all of them, the diameter of the tibial tunnel was measured at the proximal, medial, and distal segments by a 10 point reference free hand line. Also a subjective evaluation was made in relation to the presence of adjacent sclerosis at the screw. Results: from the total sample, 12 patients did not show signs of osseointegration, 16 did, finding a significant association between osseointegration and the Milagro screw (p=0.006). None of the patients had absence of degradation. 53% were classified as partial degradation and 47% as total, from these the 76.9% belong to the Milagro screw group resulting in an association between the Milagro screw and total degradation (p=0.006). Discussion and conclusions: the Milagro screw was associated with osseointegration. The total area of the tibial tunnel increased, being this percentage major for the bio-intrafix screw. Hence, a linear relation was not found between the time from intervention and the change at the area of the tibial tunnel though, suggesting there are other factors that influence this process. Beside the satisfactory clinical results, the addition of an osseoconductive ceramic did not result in a complete osseointegration of neither screw. Level of evidence: III. Type of study: Cuasi experimental, transversal, ambilective.


Subject(s)
Middle Aged , Arthroscopy/methods , Absorbable Implants , Anterior Cruciate Ligament/surgery , Anterior Cruciate Ligament , Osseointegration , Tomography, X-Ray Computed , Knee Injuries , Treatment Outcome , Bone Screws , Knee Injuries/surgery
5.
Acta Ortop Mex ; 23(6): 331-5, 2009.
Article in Spanish | MEDLINE | ID: mdl-20376998

ABSTRACT

INTRODUCTION: Health economics studies play an important role in all healthcare systems. The purpose of the latter is to offer effective and low-cost treatments. OBJECTIVE: Analyze the costs and the economic impact of the comprehensive ACL treatment. MATERIAL AND METHODS: An average cost study was done of primary ACL reconstruction. We studied 104 patients during 2005, 79 males and 25 females, with mean age 31.5 years. The assessment of the preoperative, operative and postoperative costs was related to each patient's socioeconomic stratum (SES). RESULTS: The hamstrings were the most frequently used graft (71%) versus the bone-patellar tendon-bone graft (BTB) (29%). Socioeconomic strata 2 and 3 were predominant. The following were the most frequent hamstrings implants used: Rigidfix/Intrafix and Endobutton/Xtralok, while the most frequent BTB grafts used were the metallic interference screws. No difference was found between the types of grafts and the SES in the preoperative and postoperative costs, including imaging studies, hospital say and rehabilitation. However, differences were found among the different groups in the cost of surgery, resulting from the type of implant used. The mean cost for SES 1 and 2 was $6475.20, for SES 3 and 4, $8057.51, and for SES 5 and 6, $16,242.5. The vulnerable population (SES 1) needs 7.34-fold its monthly income to pay for the comprehensive treatment, while the middle stratum (SES 3) needs 3.27-fold its monthly income. CONCLUSIONS: The comprehensive cost of treatment is proportionally higher than the patients' income. It is important to point out that the systems using state-of-the-art technology, which in another setting would be inaccessible, have significant advantages when compared with the less expensive systems. Thus the economically vulnerable SES benefit from the subsidy granted by the National Institutes of Health.


Subject(s)
Anterior Cruciate Ligament/surgery , Bone-Patellar Tendon-Bone Grafting/economics , Costs and Cost Analysis , Knee Joint/surgery , Orthopedic Procedures/economics , Tendons/transplantation , Adult , Cost-Benefit Analysis , Female , Humans , Male , Orthopedic Fixation Devices , Socioeconomic Factors
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