Journal of Bone and Joint Surgery - British Volume · 1980 · 394 citations · 1 references
Upright PostureIntervertebral Compressive ForcesMotor ControlOrthopaedic SurgeryErect Standing PostureKinesiologyLumbar SpineBiomechanicsOsteoarthritisApplied PhysiologyRehabilitation EngineeringSustained LoadingHealth SciencesApophysial JointsErect Sitting PostureMusculoskeletal FunctionRehabilitationHuman Musculoskeletal SystemSpinal BiomechanicsMusculoskeletal InteractionHuman MovementMedicine
Cadaveric lumbar intervertebral joints were loaded to simulate the erect standing posture (lordosis), and the erect sitting posture (slightly flexed). The results show that, after the intervertebral disc has been reduced in height by a period of sustained loading, the apophysial joints resist about 16 per cent of the intervertebral compressive forces in the erect standing posture, whereas in the erect sitting posture they resist none. The implications of this in relationship to degenerative changes and to low backache are discussed.
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