Risk factors of recurrence of hernias of lumbar intervertebral discs
A retrospective data analysis of 60 patients operated for herniated discs at L4-L5 has been carried out. The patients were divided into 2 groups comparing their preoperative clinical and radiological parameters: I group with «relapse», II group without relapse. All data were processed using the statistical program SPSS. As a result, the recurrence of disc hernias was noted in the period of 9.5 ± 1.5 months (range 1 to 21 months) after primary surgery. The index of disc height in group I was 0.4 ± 0.008, in group II – 0.3 ± 0.003 (P = 0.00); segmental sagittal range of motion in group I was 10.7 ± 0.4°, in group II – 8.5 ± 0.1°(P = 0.00); the central angle of lordosis in the I group was 30.8 ± 1.7°, in group II – 49.7 ± 0.7° (P = 0,00); the stage of degeneration by Pfirman (III:IV) in group I was 11 (73.3 %) : 4 (26.7 %), in group II 6 (13.3 %) : 39 (86.7 %) (R = 0.45). Thus, the index of disc height, sagittal range of motion, angle of lordosis, the stage of degeneration have clinically significant correlation with rate of recurrence of hernias according to our data. Preoperative data account settings can help to minimize the number of unfavorable outcomes of surgical treatment of intervertebral hernias.
About Authors (Correspondence):
Krutko A.V. – doctor of medical sciences, head of neurosurgery department N 2, senior researcher, e-mail: email@example.com
Baykov E.S. – candidate of medical sciences, neurosurgeon, e-mail: firstname.lastname@example.org