한국정밀공학회:학술대회논문집 (Proceedings of the Korean Society of Precision Engineering Conference)
- 한국정밀공학회 2006년도 춘계학술대회 논문집
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- Pages.187-188
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- 2006
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- 2005-8446(pISSN)
척추 파열 골절 치료를 위한 전.후방 척추고정술의 생체역학적 안정성 평가
Biomechanical Stability Evaluation of Anterior/posterior Spinal Fusion for Burst Fracture
초록
A 3-D finite element model of human thoracolumbar spine (T12-L2) was reconstructed from CT images. Various anterior and posterior instrumentation techniques were performed with long cage after corpectomy. Six loading cases were applied up to 10 Nm, espectively. The rotations of T12 with respect to L2 were measured and the stiffnesses were calculated as the applied forces divided by the segmental rotations. The posterior fixation technique increased the stiffness of the spine the most. The addition of anterior rod from 1 to 2 increased the stiffness significantly without posterior fixation, but no effect was found with posterior fixation. We found that different fixation techniques changed the stiffness of the spine.
키워드