DISC HERNIATIONS AND NEURAL STRUCTURES COMPRESSION IN DIFFERENT LUMBOSACRAL TRANSITIONAL ANATOMY TYPES

Authors

  • Niki Matveeva Institute of Anatomy, Faculty of Medicine, Ss. Cyril and Methodius University in Skopje, R.N. Macedonia
  • Jasmina Chabukovska Radulovska University Clinic for Surgery “St. Naum Ohridski” Skopje, Ss. Cyril and Methodius University Skopje, R.N. Macedonia
  • Tanja Petrovska University Clinic for Surgery “St. Naum Ohridski” Skopje, Ss. Cyril and Methodius University Skopje, R.N. Macedonia
  • Julija Zhivadinovik Institute of Anatomy, Faculty of Medicine, Ss. Cyril and Methodius University in Skopje, R.N. Macedonia
  • Biljana Zafirova Institute of Anatomy, Faculty of Medicine, Ss. Cyril and Methodius University in Skopje, R.N. Macedonia

Keywords:

lumbosacral transitional vertebra, MRI, disc herniation, cauda equine, nerves, spinal

Abstract

Several studies describe the relationship between different lumbosacral transitional vertebra (LSTV) types, disc herniations and neural structures compression in the central and nerve root canal.
The objective of this study was to evaluate the relationship between different LSTV groups and disc herniations associated with the grade of neural structures compression in the central and nerve root canal at transitional and at adjacent proximal to LSTV level.
A total of 145 patients with lumbosacral radicular syndrome who underwent MRI examination of the lumbar spine were retrospectively analyzed. The study group comprised 75 patients who presented with LSTV, divided into four subgroups based on Castellvi classification. Seventy patients without LSTV were assigned to the control group.
There were significantly more disc herniations at the L/S junction in the study LSTV group compared to the control group (78.7 % vs 59.4%, p=.012). In the LSTV group more severe cauda equina and bilateral subarticular nerve root compression at the L/S junction was found (9%, p=.002) compared to the control group. Among the LSTV subgroups, more cauda equina compression was observed mainly in bilateral osseus and bilateral combined fusion group (57%, 54% vs 26%; p=.009, p=.012). At the adjacent proximal level severe cauda equina compression was significantly increased in the LSTV compared to the control group (34.7% vs 21.4%; p=.038). Among the LSTV subgroups severe cauda equina compression was most prevalent in bilateral articular fusion subgroup (42% vs 21%; p=.028).

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Published

2021-06-21

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