Sinan Kahraman1, Selhan Karadereler2,3, Mutlu Cobanoglu4, Sinan Yilar5, Ayhan Mutlu6, Levent Onur Ulusoy6, Azmi Hamzaoglu3. 1. Department of Orthopaedics and Traumatology, Istanbul Bilim University Faculty of Medicine, Abide-i Hurriyet Cad. No:166 Sisli, 34381, Istanbul, Turkey. kahramansin@gmail.com. 2. Department of Neurosurgery, Florence Nightingale Hospital, Istanbul, Turkey. 3. Istanbul Spine Center, Florence Nightingale Hospital, Abide-i Hurriyet Cad. No:164 Sisli, 34381, Istanbul, Turkey. 4. Department of Orthopaedics and Traumatology, Adnan Menderes University Faculty of Medicine, Merkez Kampusu Aytepe Mevkii, 09100, Aydin, Turkey. 5. Department of Orthopaedics and Traumatology, Erzurum Ataturk University Faculty of Medicine, Vani Efendi Mah.Yakutiye, 2540, Erzurum, Turkey. 6. Department of Radiology, Florence Nightingale Hospital, Abide-i Hurriyet Cad. No:166 Sisli, 34381, Istanbul, Turkey.
Abstract
PURPOSE: The aim of this retrospective study was to evaluate the changes in the vertebral body and spinal canal area in a group of patients who had pedicle screw fixation under age 5 for the treatment of congenital spinal deformity at least 5 year follow-up. METHODS: 11 patients who had been operated due to spinal deformity under age 5 with who had a CT examination at least 5 years after the initial operation were included in the study. All patients underwent hemivertebrectomy and transpedicular fixation procedures at an average age of 3.18 years (range 2-5 years). All had preoperative CT to evaluate the congenital deformities. Measurements were done at the instrumented vertebrae as well as the un-instrumented ones above and below them to evaluate; vertebral body parameters, pedicle parameters and spinal canal area of upper instrumented vertebra (UIV), lower instrumented vertebra (LIV), upper adjacent un-instrumented vertebra and lower adjacent un-instrumented vertebra. RESULTS: The average follow-up was 7.2 (range 5-12) years. Six of the patients were over age 10 during the final CT examination while 5 were at age 7. Female-to male ratio was 8-3. Measurement of all the parameters in 22 instrumented and 22 non-instrumented segments showed a proportional increase rather than a decrease at each segment. The percentage of canal area growth at UIV and LIV was 21 and 17.5 %, respectively. CONCLUSION: Pedicle screw instrumentation has no adverse effect on further spinal body, pedicle and canal growth and does not result in iatrogenic spinal canal stenosis.
PURPOSE: The aim of this retrospective study was to evaluate the changes in the vertebral body and spinal canal area in a group of patients who had pedicle screw fixation under age 5 for the treatment of congenital spinal deformity at least 5 year follow-up. METHODS: 11 patients who had been operated due to spinal deformity under age 5 with who had a CT examination at least 5 years after the initial operation were included in the study. All patients underwent hemivertebrectomy and transpedicular fixation procedures at an average age of 3.18 years (range 2-5 years). All had preoperative CT to evaluate the congenital deformities. Measurements were done at the instrumented vertebrae as well as the un-instrumented ones above and below them to evaluate; vertebral body parameters, pedicle parameters and spinal canal area of upper instrumented vertebra (UIV), lower instrumented vertebra (LIV), upper adjacent un-instrumented vertebra and lower adjacent un-instrumented vertebra. RESULTS: The average follow-up was 7.2 (range 5-12) years. Six of the patients were over age 10 during the final CT examination while 5 were at age 7. Female-to male ratio was 8-3. Measurement of all the parameters in 22 instrumented and 22 non-instrumented segments showed a proportional increase rather than a decrease at each segment. The percentage of canal area growth at UIV and LIV was 21 and 17.5 %, respectively. CONCLUSION: Pedicle screw instrumentation has no adverse effect on further spinal body, pedicle and canal growth and does not result in iatrogenic spinal canal stenosis.
Authors: Tamás Fülöp Fekete; Frank S Kleinstück; Anne F Mannion; Zsolt S Kendik; Dezso J Jeszenszky Journal: Eur Spine J Date: 2011-07-16 Impact factor: 3.134
Authors: Akin Cil; Muharrem Yazici; Kenan Daglioglu; Ustun Aydingoz; Ahmet Alanay; R Emre Acaroglu; Mahir Gulsen; Adil Surat Journal: Spine (Phila Pa 1976) Date: 2005-06-01 Impact factor: 3.468