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Thickness of the ligamentum flavum of the spine and its relationship with disc degeneration
Objective: This study investigates whether the thickening of the ligamentum flavum (LF) is correlated with disc degeneration. Methods: This retrospective study was conducted with 98 patients with chronic low back pain treated in a spinal surgery service between January 2012 and January 2013. All pat...
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Published in: | Coluna 2014, Vol.13 (2), p.112-115 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites |
Online Access: | Get full text |
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Summary: | Objective: This study investigates whether the thickening of the ligamentum flavum (LF) is correlated with disc degeneration. Methods: This retrospective study was conducted with 98 patients with chronic low back pain treated in a spinal surgery service between January 2012 and January 2013. All patients underwent magnetic resonance imaging (MRI) and the images were evaluated by a spinal surgeon to measure the thickness of the LF and evaluate the degree of disc degeneration by the Pfirrmann grading system, according to the spinal levels (L3 -L4, L4-L5, L5-S1). An association was sought between LF hypertrophy and disc degeneration, age, sex and disc height. Results: The mean age of the patients was 53.6 years, and the majority were women (59.2%). The thickness of the LF and disc height varied according to the spinal level, the greatest LF thickness being found between L4-L5, and the greatest disc height at L5-S1. Women had statistically thicker ligaments in L3/L4 than men. The degree of disc degeneration was inversely correlated with the height at all the levels evaluated, i.e., the greater the degree of degeneration, the lower the disc height. Conclusions: The thickening of LF is not related to disc height or degree of disc degeneration. Therefore, there is no deformation of the LF within the spinal canal secondary to disc degeneration.
Objetivo: Investigar si el espesamiento del ligamento amarillo (LA) se correlaciona con la degeneración del disco. Método: Este estudio retrospectivo se llevó a cabo con 98 pacientes con dolor lumbar crónico en servicio de atención ambulatoria especializado en cirugía de columna, entre enero de 2012 y enero de 2013.Todos los pacientes fueron sometidos a una resonancia magnética (MRI) y las imágenes fueron evaluadas por un especialista en cirugía de columna para comparar y cuantificar el espesor del LA y el grado de degeneración del disco por el método de Pfirrmann, según los niveles de la columna vertebral (L3-L4, L4-L5, L5-S1). Se analizó la asociación entre la hipertrofia del ligamento amarillo y la degeneración del disco, la edad y el sexo de los pacientes y la altura del disco. Resultados: La edad media de los pacientes fue de 53,6 años y la mayoría eran mujeres (59,2%). El espesor del LA y la altura del disco variaron según el nivel, con el mayor espesor del LA encontrado entre L4-L5 y la mayor altura del disco, en L5-S1. Las mujeres tuvieron estadísticamente mayor espesor medio del ligamento en L3/L4 que los hombres. |
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ISSN: | 1808-1851 2177-014X 1808-1851 |
DOI: | 10.1590/S1808-18512014130200321 |