Clinical outcome of bone cement-augmented pedicle screw fixation for thoracolumbar refractures after percutaneous kyphoplasty
10.3760/cma.j.issn.1001-8050.2017.11.010
- VernacularTitle:骨水泥强化椎弓根螺钉内固定治疗胸腰椎经皮椎体后凸成形术后手术椎体再骨折的疗效分析
- Author:
Yuanzheng WANG
1
,
2
;
美国纽约州罗切斯特大学医学中心骨科、骨科研究中心
;
Bo LI
;
Tao GUO
;
Zhi PENG
;
Tao DAI
;
M.Schwarz EDWARD
;
Chao XIE
Author Information
1. 550002 贵阳,贵州省人民医院骨科
2. 美国纽约州罗切斯特大学医学中心骨科、骨科研究中心
- Keywords:
Spinal fractures;
Thoracic vertebrae;
Lumbar vertebrae;
Internal fixators;
Vertebral refracture
- From:
Chinese Journal of Trauma
2017;33(11):1005-1010
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the clinical therapeutic effects of bone cement-augmented pedicle screw fixation for cement vertebrae refractures with lower limb neurological symptoms after percutaneous kyphoplasty (PKP) in elderly patients with osteoporotic thoracolumbar compression fractures.Methods A total of 123 elderly patients with osteoporotic thoracolumbar compression fractures underwent PKP from December 2013 to December 2016 were retrospectively analyzed by case series study.Twelve patients had vertebral refracture with compression of the spinal cord or cauda equina which resulted in lumbosacral and leg pain,numbness and disability of ambulation and there were five males and seven females,with age of (69.2 ± 7.1) years.Injured vertebrae was located at T12 in five cases,at L1 in five and at L2 in two.Bone cement-augmented pedicle screw fixation through a standard posterior approach was utilized to treat all the 12 patients.Visual analogue scale (VAS),Oswestry disability index (ODI),anterior vertebral height compression ratio,and kyphotic angle at the preoperative time,one week postoperatively and last follow-up were recorded and compared.Intraoperative and postoperative complications were also recorded.Results The mean duration of follow-up in all the patients was 26.7 months (range,12-36 months).Intraoperative nerve injury,dural tear,leakage of bone cement,bone cement toxicity reaction,and pulmonary embolism were not observed during the surgery.The postoperative radiographs for all the 12 patients showed that the bone cement was distributed in cancellous bone and around the screw appropriately where there was no cement leakage out of the vertebral body or pedicle.Compared with preoperative scores,the average low back pain VAS,leg pain VAS and ODI at postoperative one week were improved by (2.2 ± 0.7) points,(2.2 ± 0.4) points and (33.2 ± 8.9) points,respectively (P ＜ 0.01).Anterior vertebral height compression ratio was decreased from preoperative (71.5 ± 11.7) ％ to (18.7 ± 10.3) ％ at postoperative one week (P ＜ 0.01).The mean kyphotic angle was corrected from preoperative (28.3 ± 7.6) ° to (7.1 ± 2.3) ° at postoperative one week (P ＜ 0.01).The symptoms of lumbar pain,and numbness and weakness of lower limbs were improved significantly.There was no statistically significant difference of all the parameters between the last follow-up evaluation and one week post-operatively (P ＞ 0.05).Conclusion For elderly patients with spinal cord or cauda equina nerve compression symptoms after PKP for osteoporotic thoracolumbar compression fractures,the usage of posterior approach bone cement-augmented pedicle screw fixation can effectively correct kyphosis,relieve neurological symptoms and restore spinal stability.
