Errors in using two dimensional methods to measure motion about an offset revolute
Conference
·
OSTI ID:240453
- Lawrence Livermore National Lab., CA (United States)
- Louisiana State Univ., Shreveport, LA (United States). Medical Center
2D measurement of human joint motion involves analysis of 3D displacements in an observer selected measurement plane. Accurate marker placement and alignment of joint motion plane with the observer plane are difficult. Alignment of the two planes is essential for accurate recording and understanding of the joint mechanism and the movement about it. In nature, joint axes can exist at any orientation and location relative to a global reference frame. An aritrary axis is any axis that is not coincident with a reference coordinate. We calculate the errors resulting from measuring joint motion about an arbitrary axis using 2D methods.
- Research Organization:
- Lawrence Livermore National Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 240453
- Report Number(s):
- UCRL-JC--123851; CONF-960794--1; ON: DE96009237
- Country of Publication:
- United States
- Language:
- English
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