The Bone Vibration of the Lumbar Neural Arch

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概要

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• We have made this experiment to know the dynamic mechanical characteristics of the lumbar vertebra.Experimental approach1. Material: 4 lumbar vertebrae.2. The mechanical system of the pendulum: Mechanical impulse was exerted on the inferior articular process of the lumbar vertebra.3. An holder: It is made from cement, and hold the body of the lumbar vertebra.4. Desk-Top analog computor: simulated the vibration of the lumbar neural arch.5. Recording: Recorded by means of two channel oscilloscpoe. ResultsThe mechanical impulse response of the lumbar vertebrae seems to be will fitted by a simple underdamped second order equation.Approximate values found of the equivalent mechanical parameter are: Natural frequency: 1900 c. p. s. logarithmic decrement: O. 14.

• 西日本整形・災害外科学会の論文

著者

• 森貞 近見

  長崎大学整形外科

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