RESUMO
Objetivo: Evaluar el diámetro de la emergencia del túnel tibial con relación a la técnica de reconstrucción del ligamento cruzado anterior, empleando isquiotibiales autógenos, y comparar las técnicas a través del portal anteromedial (PAM) y la convencional transtibial (TT). Métodos: Estudio prospectivo, aleatorizado y comparativo de 36 pacientes diagnosticados con insuficiencia del ligamento cruzado anterior, intervenidos en forma sucesiva mediante reconstrucción primaria, con las técnicas de reconstrucción a través de PAM (16 pacientes) y la TT convencional (20 pacientes) con isquiotibiales autógenos. Todos los pacientes fueron evaluados radiológicamente, con valoración del diámetro de emergencia tibial en los planos anteroposterior y lateral a las 6 semanas y a los 12 meses del procedimiento quirúrgico respecto al tamaño de la plastia utilizada en la cirugía. Se realizó un análisis estadístico comparando ambos grupos mediante la t de Student con un valor de significación de 0,05. Resultados: El diámetro de la emergencia tibial con relación al tamaño de la plastia utilizada, obtenido a las 6 semanas en la proyección anteroposterior, manifestó un incremento del 8,1%±2,9 con la técnica PAM y del 21,20%±11,87 con la técnica TT, mientras que en la proyección lateral fue de 71%±4,72 y del 17,64%±11,48, respectivamente. Las diferencias fueron estadísticamente significativas tanto en el plano anteroposterior como en el lateral. Conclusiones: El diámetro de la apertura tibial mostró ser significativamente mayor con la técnica TT a las 6 semanas y a los 12 meses de seguimiento radiológico tanto en la proyección anteroposterior como en la lateral
Objective: Evaluate the enlargement effect of the tibial tunnel emergence of 2 different of anterior cruciate ligament reconstruction techniques: antero-medial portal (AMP) vs. transtibial (TT) technique. Methods: A prospective, randomized controlled study was performed in 36 consecutive patients who underwent anterior cruciate ligament reconstruction with autologous hamstring tendon grafts employing the AMP and conventional TT techniques. Lateral and antero-posterior radiographs were obtained for each patient at 6 weeks and 12 months postoperatively. The sclerotic margins of the tibial tunnels were measured at the widest dimension of the tunnel as well as the diameter of the tibial emergence and were compared with the initially drilled tunnel size after correction for radiographic magnification. Statistical analysis was performed to compare the 2 groups by use of the independent-samples t test, with significance set at .05. Results: The mean percentage increase in the diameter of tibial tunnel emergence at 6 weeks after surgery was 8.1%±2.9 for the PAM technique and 21.20%±11.87 for the TT technique on the anteroposterior x-ray view. However, the mean percentage increase in the diameter of the tibial tunnel emergence on the lateral view was 7.1%±4.72 for the medial portal technique and 17.64%±11.48 for the transtibial technique. This difference was statistically significant on both anteroposterior and lateral views. Conclusions: The diameter of the tibial tunnel emergence for hamstring autologous anterior cruciate ligament reconstructions was significantly lower for the medial portal technique when compared with the conventional TT technique
Assuntos
Humanos , Masculino , Feminino , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Lesões do Ligamento Cruzado Anterior/cirurgia , Músculos Isquiossurais/transplante , Tíbia/cirurgia , Fêmur/cirurgia , Estudos Prospectivos , Resultado do Tratamento , Recuperação de Função FisiológicaRESUMO
OBJECTIVE: Evaluate the enlargement effect of the tibial tunnel emergence of 2 different of anterior cruciate ligament reconstruction techniques: antero-medial portal (AMP) vs. transtibial (TT) technique. METHODS: A prospective, randomized controlled study was performed in 36 consecutive patients who underwent anterior cruciate ligament reconstruction with autologous hamstring tendon grafts employing the AMP and conventional TT techniques. Lateral and antero-posterior radiographs were obtained for each patient at 6 weeks and 12 months postoperatively. The sclerotic margins of the tibial tunnels were measured at the widest dimension of the tunnel as well as the diameter of the tibial emergence and were compared with the initially drilled tunnel size after correction for radiographic magnification. Statistical analysis was performed to compare the 2 groups by use of the independent-samples t test, with significance set at .05. RESULTS: The mean percentage increase in the diameter of tibial tunnel emergence at 6 weeks after surgery was 8.1%±2.9 for the PAM technique and 21.20%±11.87 for the TT technique on the anteroposterior x-ray view. However, the mean percentage increase in the diameter of the tibial tunnel emergence on the lateral view was 7.1%±4.72 for the medial portal technique and 17.64%±11.48 for the transtibial technique. This difference was statistically significant on both anteroposterior and lateral views. CONCLUSIONS: The diameter of the tibial tunnel emergence for hamstring autologous anterior cruciate ligament reconstructions was significantly lower for the medial portal technique when compared with the conventional TT technique.
