Spondylolisthesis is the forward displacement of a vertebra, especially the fifth lumbar vertebra, most commonly occurring after a fracture. Backward displacement is. If the fracture gap at the pars widens and the vertebra shifts forward, then the condition is called spondylolisthesis. Usually, the fifth lumbar vertebra shifts. 123 EXPERIENCIA DEL TRATAMIENTO DE ESPONDILOLISTESIS LUMBAR DEGENERATIVA DE UN SOLO SEGMENTO CON ESPACIADOR INTERESPINOSO de manera directa por la incapacidad previa. 5.3 Einteilung nach Meyerding. Im Rahmen der Diagnostik wird anhand der seitlichen Aufnahmen eine Klassifikation der Spondylolisthesis nach Meyerding vorgenommen. Spondylolisthesis is the medical condition wherein one of the vertebras of the patient’s spine shifts forward or backward in regards with the adjoining vertebras. Revista de la Asociación Argentina de Ortopedia y Traumatología versión On-line ISSN 1852-7434 Rev. Asoc. Argent. Ortop. Traumatol. vol.76 no.4 Ciudad Autónoma de. Classification et ressources externes Vue latérale (aux Rayon-X) d'un spondylolisthesis de stade III niveau L5-S1 CIM - 10 M43.1 , Q76.2 CIM - 9 738.4 , 756.12 OMIM. What Is Grade 1 Spondylolisthesis?. Spondylolisthesis is a forward slip of one of the vertebrae onto the vertebra below it. It occurs most often in the lower back. This in-depth discussion about spondylolisthesis explains what causes a vertebra to slip and what the different grades (eg, grade 1 spondylolisthesis) look like. Spondylolisthesis. Diagram shows how to grade spondylolisthesis. The 2 arrows, one indicating vertebral body width and the other indicating the amount of.