科研之友
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摘要
A model is developed of the stress-strain response of an inter-vertebral disc to axial compression. This is based on a balance of increased intradiscal pressure, resulting from the compression of the disc, and the re-straining forces generated by the collagen fibres within the annulus fibrosus. A formula is derived for predicting the loading force on a disc once the nucleus pressure is known. Measured material values of L3 and L4 discs are used to make quantitative predictions. The results compare reasonably well with experimental results.
- 出版日期2011-10
