Dynamic motion difference between normal subjects and low-back pain (LBP) patients has investigated in terns of kinematic variables such as range of motion, velocity and acceleration of the back and hip. Ten healthy subjects and ten LBP patients were ...
Dynamic motion difference between normal subjects and low-back pain (LBP) patients has investigated in terns of kinematic variables such as range of motion, velocity and acceleration of the back and hip. Ten healthy subjects and ten LBP patients were recruited in this study. Electro-goniometer such as Lumbar Motion Monitor and Hip Monitor have been used for quantitative measurement of the trunk motion during repetitive flexion and extension for ten seconds. Results indicated that the velocity and acceleration of the back and hip were important parameters to quantitatively identify LBP patients. The consistency of cyclic trunk motion and the relationship between the back and hip were measured in terms of Variance Ratio and Phase Angle in order to accurately assess the motion characteristics of LBP patients. In particular, the hip motion has been proven to be a very important factor in describing the dynamics of damaged lower back. Further study needs to be conducted for additional knowledge of back-hip coordination. This type of functional evaluation technique as well as existing imaging technique are expected to assist physicians for an accurate diagnosis and timely rehabilitation.