Comparison of Knee Joint Cartilage Thickness in Triathletes and Physically Inactive Volunteers Based on Magnetic Resonance Imaging and Three-Dimensional Analysis

2000 ◽  
Vol 28 (4) ◽  
pp. 541-546 ◽  
Author(s):  
Roland Mühlbauer ◽  
Susanne Lukasz ◽  
Sonja Faber ◽  
Tobias Stammberger ◽  
Felix Eckstein
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Knee Joint ◽  
Dimensional Analysis ◽  
Three Dimensional ◽  
Cartilage Thickness ◽  
Joint Cartilage ◽  
Resonance Imaging ◽  
Physically Inactive

In Vivo Tracking of the Human Patella Using Cine Phase Contrast Magnetic Resonance Imaging

1999 ◽  
Vol 121 (6) ◽  
pp. 650-656 ◽  
Author(s):  
F. T. Sheehan ◽  
F. E. Zajac ◽  
J. E. Drace
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Knee Joint ◽  
Phase Contrast ◽  
Three Dimensional ◽  
Resonance Imaging ◽  
Contrast Magnetic Resonance ◽  
Knee Joint Kinematics ◽  
Cine Phase Contrast

Improper patellar tracking is often considered to be the cause of patellar-femoral pain. Unfortunately, our knowledge of patellar-femoral-tibial (knee) joint kinematics is severely limited due to a lack of three-dimensional, noninvasive, in vivo measurement techniques. This study presents the first large-scale, dynamic, three-dimensional, noninvasive, in vivo study of nonimpaired knee joint kinematics during volitional leg extensions. Cine-phase contrast magnetic resonance imaging was used to measure the velocity profiles of the patella, femur, and tibia in 18 unimpaired knees during leg extensions, resisted by a 34 N weight. Bone displacements were calculated through integration and then converted into three-dimensional orientation angles. We found that the patella displaced laterally, superiorly, and anteriorly as the knee extended. Further, patellar flexion lagged knee flexion, patellar tilt was variable, and patellar rotation was fairly constant throughout extension.

scholarly journals Kinematics of the lumbar spine in trunk rotation: in vivo three-dimensional analysis using magnetic resonance imaging

2007 ◽  
Vol 16 (11) ◽  
pp. 1867-1874 ◽  
Author(s):  
Ryutaro Fujii ◽  
Hironobu Sakaura ◽  
Yoshihiro Mukai ◽  
Noboru Hosono ◽  
Takahiro Ishii ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Lumbar Spine ◽  
Magnetic Resonance ◽  
Dimensional Analysis ◽  
Three Dimensional ◽  
Trunk Rotation ◽  
Resonance Imaging
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