Axial rotation in the lumbar spine is limited by

Prepare for your Movement Science Midterm Test with flashcards and multiple choice questions, each with hints and explanations. Boost your exam readiness!

Axial rotation in the lumbar spine is limited primarily by the orientation of the facet joints. In this region the facet joints are aligned mostly in the sagittal plane, so as you rotate, the opposing facet surfaces come into contact quickly and the joint capsules tighten, sharply restricting further rotation. This arrangement favors flexion-extension over rotational freedom and provides stability to protect neural structures.

Transverse processes mainly serve as muscle attachment sites and don’t actively block rotation. Intervertebral discs contribute to overall stability but aren’t the main restraint to rotation in the lumbar region; the disc’s properties influence rotation more through the interaction with the facets. Spinous processes and their associated ligaments influence extension and flexion more than axial rotation and thus aren’t the primary limitation.