A multi-centred, retrospective study was conducted. From 2005–2009, patients who had a diagnosis of spondylolisthesis were reviewed. Among these, only those who had L5/S1 spondylolytic spondylolisthesis were recruited. Patients more than 50 years old, those who had recent lumbar spine trauma, previous lumbar spine surgery and those with poor quality radiographs (inadequate exposure, rotated films) were excluded. Flexion and extension radiographs were taken using conventional standing radiography. In total, there were 41 patients with Meyerding grade I and grade II spondylolytic spondylolisthesis at the L5/S1 segment. The clinical symptoms and signs of the patients were recorded.
Paradoxical motion—where flexion causes reduction of spondylolisthesis and extension increases the anterior translation, has rarely been described [, ]. In this study, we attempt to determine the prevalence of paradoxical movement in patients with spondylolytic spondylolisthesis of the L5-S1 lumbo-sacral segment during dynamic flexion and extension, and why this abnormal motion occurs.
What is grade 1 anterolisthesis L5 on S1 with lower …
In low grade slips The evidence in support of fusion for spondylolistheses types.a patient suffering from bilateral spondylolysis at L5 with grade 1 Hello madam is there anybody u know who had recovered from the anterolisthesis.
I have grade 4 spondylolisthesis and anterolisthesis of my L5 S1
Multiple comparisons using the Mann–Whitney U test showed that there was again a significant difference in the slip angle between group 1 and group 3 (paradoxical motion and anterolisthesis), respectively. Patients in the paradoxical group had a significantly greater slip angle (more lordotic at L5-S1) compared with patients who had instability with anterolisthesis (9.49–0.93, p = 0.006). Other variables, however, showed no significant association between the groups (Table ).
Grade 1 anterolisthesis of l5 s1 - Marble Palace Inc.
In patients with unstable spondylolysis, spondylolisthesis results because the pars defect disconnects the vertebral body from the inferior articular process. The loss of this posterior stabilising element causes the vertebra to be susceptible to excessive forward translation during spinal flexion . This, however, does not explain why paradoxical movement of the L5/S1 segment occurs. Similarly, other factors that play a role in spondylolisthesis such as pelvic incidence, sacral slope, pelvic tilt and lumbar lordosis also do not explain this phenomenon .
anterolistesi di S1 su L5 > anterolisthesis of S1 on L5
In patients with spondylolisthesis, it is assumed that flexion accentuates anterior displacement, whereas extension causes some reduction. Paradoxical movement—where flexion causes reduction of spondylolisthesis and extension increases the anterior translation, is rarely described. In this study, we investigate the prevalence of paradoxical motion in patients with L5-S1 spondylolytic spondylolisthesis and why this abnormal motion occurs.
grade 1 isthmic spondylolisthesis l5 s1
Lytic spondylolisthesis usually occurs at L5/S1 and normally presents in the teenage years or 20s. The classical example is the so-called fast (cricket) bowler’s “stress fracture”. It occurs due to repetitive stresses in the lumbar spine but it often appears with no obvious history of repetitive trauma.