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논문 기본 정보

자료유형
학술저널
저자정보
Kang, Suk-Hyung (Department of Neurosurgery, College of Medicine, Chung-Ang University) Kim, Kyoung-Tae (Department of Neurosurgery, College of Medicine, Chung-Ang University) Park, Seung-Won (Department of Neurosurgery, College of Medicine, Chung-Ang University) Kim, Young-Baeg (Department of Neurosurgery, College of Medicine, Chung-Ang University)
저널정보
대한신경외과학회 대한신경외과학회지 대한신경외과학회지 제49권 제1호
발행연도
2011.1
수록면
75 - 78 (4page)

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We report a case of pedicle screw loosening treated by modified transpedicular screw augmentation technique using polymethylmethacrylate(PMMA), which used the anchoring effect of hardened PMMA. A 56-year-old man who had an L3/4/5 fusion operation 3 years ago complained of continuous low back pain after this operation. The computerized tomography showed a radiolucent halo around the pedicle screw at L5. We augmented the L5 pedicle screw with modified pedicle screw augmentation technique using PMMA and performed an L3/4/5 pedicle screw fixation without hook or operation field extension. This modified technique is a kind of transpedicular stiffness augmentation using PMMA for the dead space around the loosed screw. After filling the dead space with 1-2 cc of PMMA, we inserted a small screw. Once the PMMA hardened, we removed the small screw and inserted a thicker screw along the existing screw threading to improve the pedicle screws' pullout strength. At 10 months' follow-up, x-ray showed strong fusion of L3/4/5. The visual analogue scale (VAS) of his back pain was improved from 9 to 5. This modified transpedicular screw augmentation with PMMA using anchoring effect is a Simple and effective surgical technique for pedicle screw loosening. However, clinical analyses of long-term follow-up and biomechanical studies are needed.

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