VERTEBRA STRCTURE AND FUNCTION(BIOMECHANIS OF SPINE)Physiotherapy Tutorial
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summary of the video with the time for reference:
1.Spine 0:55
-33 vertebra
-23 intervertebral disc
-cervical vertebra-7
-thoracic vertebras-12
-lumbar vertebras-5
-sacral vertebras-5
-coccygeal vertebras-4
-primary curvature
kyphotic curve at thoracic and sacral spine
-secondary curvature
lordotic curvature formed at cervical and lumbar spine
2.Vertebral body 3:40
-formed by trabecular bone and covered by cancellous bone
-resists compressive forces due to arrangement of trabeculae
3.Pedicle 4:47
-connects the body to posterior elements
-short and thick walls
-transmits bending forces to the body
4.Articular surfaces 6:05
-Facet joints
-2 superior facet
-2 inferior facet
-superior facet articulate with inferior fact of the next vertebra
-forms an articular pillar
5.Spinous process 7:20
-posterior projection
-forms from the lamina
-provides attachment to the muscle and also serves as a bony block
6.Vertebral Foramen 9:22
-formed by lamia around it
-protects the spinal cord and provides a passage
7.Lamina 9:41
-Pars inter-articularis goes through lot of bending forces and has high risk of stress fracture
-these forces come from spinous process, transverse process, articular processes too
8.Transverse process 12:12
-lateral projection
-Increases the moment arm
#biomechanicsofspine
#spinebiomechanics
#vertebralcolumnbiomechanics