Spinal ligament transducer based on a hall effect sensor

J Biomech. 1997 Mar;30(3):291-3. doi: 10.1016/s0021-9290(96)00137-6.

Abstract

A spinal ligament transducer (SLT) was developed to measure in situ spinal ligament elongation during the simulation of whiplash trauma with a cadaveric spine specimen. The SLT was designed to be affixed to two K-wires drilled into the bone at the approximate points of ligament origin and insertion. The transducer is low cost and is capable of measuring the linear distance between the K-wires in the range 4-12 mm with the root mean square (RMS) accuracy of 0.025 mm.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, P.H.S.

MeSH terms

  • Bone Wires
  • Cadaver
  • Calibration
  • Cervical Vertebrae / injuries
  • Equipment Design
  • Fourier Analysis
  • Humans
  • Longitudinal Ligaments / physiology*
  • Magnetics
  • Pliability
  • Signal Processing, Computer-Assisted
  • Stress, Mechanical
  • Surface Properties
  • Transducers*
  • Whiplash Injuries / physiopathology