頁籤選單縮合
題 名 | Strain Analysis of Pars Interarticularis and Its Implications in the Spondylolysis Rehabilitation Strategies |
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作 者 | Kuo, Ya-wen; Wang, Jaw-lin; | 書刊名 | Biomedical Engineering: Applications, Basis and Communications |
卷 期 | 19:2 2007.04[民96.04] |
頁 次 | 頁79-84 |
分類號 | 410.1644 |
關鍵詞 | Spondylolysis; Strains; Pars interarticularis; Postural sway; |
語 文 | 英文(English) |
英文摘要 | The rehabilitation and exercise strategy for spondylolysis is constroversial. Both lordotic and anti-lordotic braces, and both flexion and extension oriented motions were advised for spondylolysis rehabilitation. However, the biomechanical outcomes of the two strategies were less understood. The objective of current study is to evaluate the effect of postural sway on the strain of pars interaticularis, and to find the mechanical mechanism of lordotic and anti-lordotic rehabilitation strategies for spondylolysis. Two-motion-segment porcine cervical spine model (C3-C5, C6-T1) was used to simulate human lumbar spine. The loadings induced by anterior, neutral, posterior, anterloateral, lateral and posterolateral sways were simulated by applying vertical eccentric pointed loadings. Two uni-axial strain gages wee applied on the dorsal surface of bilateral pars interaticularis of middle vertebrae. It was revealed that the aprs strains induced by posterior, lateral, posterolateral sways were significantly greater than those induced by anterior, neutral and anterolateral sways. The ipsilateral pars strains were higher than the contraalateral pars strains during lateral and posterolateral sways. However, pars strains of ipsilateral and contralateral side were similar during anterolateral sway. These results proved that the postural sway affects the strain of pars interarticularis. The anti-lordotic braces and exercise are likely to reduce the strain of pars interarticularis. |
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