1). Magnetic resonance imaging (MRI) confirmed Meyerding grade-1 spondylolisthesis at L4–L5 (Fig. 2). Given his progressive symptoms and radiographic evidence of lumbar instability, the patient was ...

Acquired spondylolisthesis (ASL) was defined as non-lytic spondylolisthesis involving lumbar spines above L5. Questionnaires were used to gather ... Results: A total of 40 cases (3.2%) of ASL were ...