Do dynamic-based MR knee kinematics methods produce the same results as static methods?
Article first published online: 27 JUL 2012
Copyright © 2012 Wiley Periodicals, Inc.
Magnetic Resonance in Medicine
Volume 69, Issue 6, pages 1634–1644, June 2013
How to Cite
d'Entremont, A. G., Nordmeyer-Massner, J. A., Bos, C., Wilson, D. R. and Pruessmann, K. P. (2013), Do dynamic-based MR knee kinematics methods produce the same results as static methods?. Magn Reson Med, 69: 1634–1644. doi: 10.1002/mrm.24425
- Issue published online: 16 MAY 2013
- Article first published online: 27 JUL 2012
- Manuscript Accepted: 27 JUN 2012
- Manuscript Revised: 14 JUN 2012
- Manuscript Received: 9 NOV 2011
- knee MRI;
- joint kinematics;
- dynamic imaging;
- stretchable coil
MR-based methods provide low risk, noninvasive assessment of joint kinematics; however, these methods often use static positions or require many identical cycles of movement. The study objective was to compare the 3D kinematic results approximated from a series of sequential static poses of the knee with the 3D kinematic results obtained from continuous dynamic movement of the knee. To accomplish this objective, we compared kinematic data from a validated static MR method to a fast static MR method, and compared kinematic data from both static methods to a newly developed dynamic MR method. Ten normal volunteers were imaged using the three kinematic methods (dynamic, static standard, and static fast). Results showed that the two sets of static results were in agreement, indicating that the sequences (standard and fast) may be used interchangeably. Dynamic kinematic results were significantly different from both static results in eight of 11 kinematic parameters: patellar flexion, patellar tilt, patellar proximal translation, patellar lateral translation, patellar anterior translation, tibial abduction, tibial internal rotation, and tibial anterior translation. Three-dimensional MR kinematics measured from dynamic knee motion are often different from those measured in a static knee at several positions, indicating that dynamic-based kinematics provides information that is not obtainable from static scans. Magn Reson Med, 2013. © 2012 Wiley Periodicals, Inc.