Partial Weight Bearing Gait (PWBG) is commonly used method for gait rehabilitation after hip or knee joint surgery. Partial Weight Bearing Gearis emerging gait rehabilitation device for PWBG. By compensating vertical force in gait, apatient can exercise gait with less effort and do exercise of low limb muscle not for maintaining gait ability. However, quantitative research how much weight should be compensated, how much joint force, moment and muscle force weight bearingaffects, about change of trajectory change according to weight bearing are not sufficiently especially mobile PWBG on overgound not on treadmill. Even though there are quantitative research for PWBG, most of them studied on the treadmill. In this paper, trajectory changes of center of mass, knee and ankle joint, joint force (hip, knee, ankle), joint moment (hip, knee, ankle), ground reaction force using VICON and muscle force (rectus femoris, tibia anterior, gastrocnemius, biceps femoris) using OpenSimas degree of weight bearing changes are presented in wheel type PWBG and suggest various guide line of weight bearing depending on patient situation. ⓒ 2017 DGIST
Table Of Contents
1. Introdcution 1 -- 1. 1 Partial weight bearing gait and previous research 1 -- 1.2 Research contents and goal 2 -- 2. Theory 3 -- 2.1 VICON 3 -- 2.2 OpenSim 3 -- 3. Experiments Design 6 -- 3.1 Experiments equipment 6 -- 3.2 Experiments protocol 7 -- 4. Experiment Result 8 -- 4.1 Trajectory 8 -- 4.1.1 Center of mass trajectory 9 -- 4.1.2 Knee joint trajectory 10 -- 4.1.3 Ankle joint trajectory 12 -- 4.2 Maximum joint force (Transverse plane) 13 -- 4.2.1 Maximum hip joint force 13 -- 4.2.2 Maximum knee joint force 14 -- 4.2.3 Maximum ankle joint force 15 -- 4.3 Maximum joint moment (Sagittal plane) 17 -- 4.3.1 Maximum hip joint moment 17 -- 4.3.2 Maximum knee joint moment 18 -- 4.3.3 Maximum ankle joint moment 19 -- 4.4 Ground reaction force (Transverse plane) 21 -- 4.4.1 Magnitude of ground reaction force 21 -- 4.4.2 Shape of ground reaction force 22 -- 4.5 Muscle force 23 -- 4.5.1 Rectus femoris 23 -- 4.5.2 Biceps femoris long 24 -- 4.5.3 Tibia anterior 26 -- 4.5.4 Gastrocnemius medialis 27 -- 5. Conclusion 28 -- 6. Appendix 29 -- 6.1 Harness modification 29 -- 6.2 Caution for PWBG assessment using VICON 30
