Facet Sagittal Orientation: Possible Role in the Pathology of Degenerative Lumbar Spinal Stenosis.

Study Design: A retrospective case-control study.

Objective: This study aimed to elucidate the association between facet joint orientation and degenerative lumbar spinal stenosis (DLSS).

Summary Of Background Data: Many studies have demonstrated the relationship between sagittal facet orientation and degenerative lumbar spondylolisthesis.

The Effects of Orientation of Lumbar Facet Joints on the Facet Joint Contact Forces: An In Vitro Biomechanical Study.

Study Design: A biomechanical human cadaveric study.

Objective: The aim of this study was to measure L2-L3 facet joint contact forces in a flexibility test using thin film electroresistive sensors, and facet joint orientation on computed tomographic (CT) scan images, to examine the effects of orientation of lumbar facet joint on the facet joint contact forces.

Summary Of Background Data: Biomechanically, the bilateral facet joints play a critical role in maintaining stability of the lumbar spine.