FUNCTIONAL DISABILITY, SAGITTAL ALIGNMENT AND PELVIC BALANCE IN LUMBAR SPONDYLOLISTHESIS

ABSTRACT Objectives: To demonstrate the recovery of lumbar sagittal pelvic alignment and sagittal pelvic balance after surgical reduction of lumbar spondylolisthesis and establish the benefits of the surgery for reduction and fixation of the lumbar spondylolisthesis with 360o circumferential arthrodesis for 2 surgical approaches by clinical and functional evaluation. Method: Eight patients with lumbar spondylolisthesis treated with surgical reduction and fixation of listhesis and segmental circumferential fusion with two surgical approaches were reviewed. They were evaluated before and after treatment with Oswestry, Visual Analogue for pain and Odom scales, performing radiographic measurement of lumbar sagittal alignment and pelvic sagittal balance with the technique of pelvic radius. Results: Oswestry scales and EVA reported improvement of symptoms after treatment in 8 cases; the Odom scale had six outstanding cases reported. The lumbar sagittal alignment presented a lumbosacral lordosis angle and a lumbopelvic lordosis angle reduced in 4 cases and increased in 4 other cases; pelvic sagittal balance increased the pelvic angle in 4 cases and decreased in 3 cases and the sacral translation of the hip axis to the promontory increased in 6 cases. Conclusion: The surgical procedure evaluated proved to be useful by modifying the lumbar sagittal alignment and the pelvic balance, besides reducing the symptoms, enabling the patient to have mobility and movement and the consequent satisfaction with the surgery. RESUMEN Objetivos: Demostrar la recuperación de la alineación sagital lumbar y del balance pélvico sagital tras la reducción quirúrgica de la espondilolistesis lumbar y establecer los beneficios del procedimiento quirúrgico de reducción y fijación de la espondilolistesis lumbar con artrodesis circunferencial de 360° por dos vías de abordaje mediante la evaluación clínico-funcional. Métodos: Se revisaron 8 pacientes con espondilolistesis lumbar tratados con reducción y fijación quirúrgica de la listesis y artrodesis circunferencial segmentaria por dos vías de abordaje. Se evaluaron antes y después del tratamiento con las escalas Oswestry, Visual Analógica del dolor y Odom, efectuando la medición radiográfica de la alineación sagital lumbar y del balance pélvico sagital con la técnica del radio pelviano. Resultados: Las escalas de Oswestry y EVA reportaron mejoría de la sintomatología después del tratamiento en los 8 casos; la escala Odom reporto 6 casos excel