[Experimental studies of change in the center of rotation of the moveable segment after intervertebral disk removal].
The in vitro effect of nucleus pulposus removal from human lumbar FSU's was investigated in a special test apparatus. Instability was determined by ROM, loss of disc height and displacement of the center of rotation. Disc height showed a decrease of 3.2 mm under axial load (700N). ROM increased up to 70%. The center of rotation demonstrated a distinct displacement in extension and lateral bending.
Steffen
R
R
Orthopädische Universitätsklinik, St. Josef-Hospital Bochum.
Wittenberg
R H
RH
Nolte
L P
LP
Hedtmann
A
A
Kolditz
D
D
Herchenbach
T
T
D001696:Biomechanical Phenomena; D006801:Humans; D007403:Intervertebral Disc / Q000503:physiopathology; D007405:Intervertebral Disc Displacement / Q000503:physiopathology / Q000601:surgery*; D008159:Lumbar Vertebrae / Q000503:physiopathology / Q000601:surgery*; D008953:Models, Anatomic; D009068:Movement / Q000502:physiology; D011183:Postoperative Complications / Q000503:physiopathology*; D013718:Tensile Strength
Experimentelle Untersuchungen zur Drehpunktveränderung des Bewegungssegmentes nach Bandscheibenausräumung.