Abstract
We performed a radiological study to assess morphological features of the lumbo-sacral spine contribute to posterior slip of the lumbar spine. Padiological measurements were carreid out in 147 cases of retrolisthesis, 30 cases of retro-position of L5 spine and a control group of 408 cases of low cack pain. The incidence of posterior slip in the controls was 26%.The average age was younger in the posterior slip group compared to the control group, and the retro-position group were younger than the retrolisthesis group.A higher incidence of lumbo-sacral transitional vertebrae was noted in the posterior slip group than in a control group. Also the angle between the superior surface and the posterior border of the sacral vertebral body was lower in the posterior slip group.The laminar angle was similar in the posterior slip group and controls.In conclusion, special morphological features such as low posterior superior sacral angles and the existence of lumbo-sacral transitional vertebrae were considered to be risk factor for the development of posterior slip.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
