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Three-dimensional motion patterns during active bending in patients with chronic low back pain
Teija Lund1, Thomas Nydegger, Dietrich Schlenzka
1ORTON Orthopaedic Hospital, Invalid Foundation, Helsinki, Finland. teija.lund@invalidisaatio.fi
Spine
|September 11, 2002
Summary
Chronic low back pain (LBP) patients show distinct spinal motion patterns compared to healthy individuals. Key differences include altered flexion-extension, lateral bending asymmetry, and coupled axial rotation during movement.
Area of Science:
- Biomechanical analysis of spinal motion.
- Orthopedics and spinal pathology.
Background:
- Limited data correlates vertebral motion with low back pain (LBP).
- Spinal motion patterns, including coupled motion and asymmetry, may indicate spinal pathology.
Purpose of the Study:
- To compare the three-dimensional motion patterns of chronic LBP patients with normal population data.
- To identify differences in motion coupling and asymmetry in chronic LBP.
Main Methods:
- 34 chronic LBP patients underwent active bending maneuvers with percutaneous transpedicular screws and markers.
- Three-dimensional intervertebral motions were measured using an optoelectronic camera.
- Data were analyzed for motion asymmetries and coupled motion patterns, compared to literature values.
Main Results:
- Seven patients excluded due to loose screw-bone interface.
- Significant differences observed in extension-flexion ratio, lateral bending asymmetry, and coupled axial rotation-lateral bending ratio.
- Distinct motion patterns were identified in chronic LBP patients.
Conclusions:
- Chronic LBP patients demonstrate altered spinal motion patterns compared to the general population.
- Specific differences noted in coupled axial rotation during lateral bending.
- Asymmetries in flexion-extension and lateral bending were significant in LBP patients.