Diagnóstico de roturas del manguito rotador por ecografía y resonancia magnética: ¿La morfología acromial influye en los resultados?

Resumen

Introducción Actualmente no existen estudios que evalúen la concordancia entre la ecografía (ECO) y la resonancia magnética (RM) observando parámetros como el índice acromial (IA) y el ángulo crítico (AC) para roturas del manguito rotador (MR). Se considera que la mayor cobertura de la huella por un IA o AC incrementados podría afectar la adecuada visualización del MR en estudios de ECO al interponerse entre el complejo tendíneo y el transductor ecográfico.

Objetivo Estimar la concordancia de la ECO y la RM en el diagnóstico de pacientes con roturas del MR confirmadas por artroscopia con IA y AC mayores al promedio normal (0.7 y 35°, respectivamente). Secundariamente, determinar si la concordancia diagnóstica es comparable entre tipos de rotura (espesor completo o parciales).

Materiales y Métodos Estudio retrospectivo de una serie consecutiva de 100 pacientes con roturas totales o parciales del MR confirmadas por artroscopia.

Resultados La edad media del grupo de estudio fue de 55,7 ± 10,5 años. La media del IA fue de 0,77 ± 0,08, y la del AC, de 37,42° ± 5,88°. La concordancia entre la ECO y la RM y el IA fue > 0,7 de 56,7% (K = 0,27; p = 0,01); y < 0,7 de 35,7% (K = 0,01; p = 0,46), respectivamente. Y la concordancia entre la ECO y la RM y el AC fue > 35° de 61,5% (K = 0,32; p = 0,001); y < 35° de 33,3% (K = -0,00; p = 0,52), respectivamente.

Conclusión La concordancia diagnóstica de la ECO comparada con la de la RM, en pacientes con roturas del MR confirmada por artroscopia y con IA y AC mayores al promedio normal, fue justa. La concordancia diagnóstica de la ECO comparada con la RM, en pacientes con IA y AC menores al promedio normal, fue pobre. La capacidad diagnóstica fue similar entre la ECO y la RM para roturas parciales y totales.

Palabras Clave

manguito rotador - ecografía - resonancia magnética - índice acromial - ángulo crítico

Publication History

Received: 26 January 2021

Accepted: 26 April 2022

Article published online:
03 October 2022

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