腰椎々弓部に於ける骨振動について

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タイトル別名
  • The Bone Vibration of the Lumbar Neural Arch

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We have made this experiment to know the dynamic mechanical characteristics of the lumbar vertebra.<br>Experimental approach<br>1. Material: 4 lumbar vertebrae.<br>2. The mechanical system of the pendulum: Mechanical impulse was exerted on the inferior articular process of the lumbar vertebra.<br>3. An holder: It is made from cement, and hold the body of the lumbar vertebra.<br>4. Desk-Top analog computor: simulated the vibration of the lumbar neural arch.<br>5. Recording: Recorded by means of two channel oscilloscpoe. Results<br>The mechanical impulse response of the lumbar vertebrae seems to be will fitted by a simple underdamped second order equation.<br>Approximate values found of the equivalent mechanical parameter are: Natural frequency: 1900 c. p. s. logarithmic decrement: O. 14.

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