The document discusses the anatomy of the lumbar spine. It describes the bones, joints, ligaments, and muscles involved in lumbar movement. The lumbar spine has a natural sagittal curve of 30-50 degrees. Key bones include the vertebral bodies, pedicles, lamina, spinous processes, and transverse processes. Movement of the lumbar spine includes flexion, extension, lateral flexion, and rotation. The main muscles that flex the lumbar spine are the abdominal muscles and psoas muscles, while the muscles involved in extension include the quadratus lumborum, erector spinae, and sacrospinalis muscles. Lateral flexion utilizes the quadratus lumborum and erector spinae, and rotation involves many

3. LUMBAR SPINE
Content :
BONES NERVE MUSCLE
MOVEMENTLIGAMENTJOINT

4. Sagital Plane Curve
30-50 degrees

5. Bony Structure of Lumbar spine
 Body
 Pedicle
 Lamina
 Spinous proces
 Transverse process (TP)
 Vertebral canal/ neural canal /Vertebral Foramen
 Facet joint
 Superior
Articular facet
 Inferior
Articular facet
 Mamillary
process

6. Ligament of lumbar spine

10. MOVEMENT MUSCLE
Lumbar Flexion
* Obliqus Externus Abdominis muscle
* Obliqus Internus Abdominis muscle
* Transversus Abdominis muscle
* Rectus Abdominis muscle
* Psoas Major muscle
* Psoas Minor muscle
Lumbar Extension
 Quadratus Lumborum muscle
 Sacrospinalis muscle
 Intertransversarii Muscle
 Interspinalis muscle
 Multifidis muscle
 Erector Spinae muscle
Lateral Flexion of Lumbar
 Quadratus Lumborum muscle
 Erector Spinae muscle
 Psoas Major muscle
 Psoas Minor muscle
Rotation of lumbar -
Approx 55
degrees
Approx 30
degrees
Approx 20-30
degrees

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12. 4.
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13. 6.

14. • WHAT ARE THE MUSCLE WHICH CAN BE
RESTRICTED THE LUMBAR MOVEMENT ?

15. Source :
• Muscolino,Josep/2006/Kinesiology-The-Skeletal-
System –and-,uscle-Function/USA.
• http://www.upmc.com/Services/rehab/rehab-
institute/conditions/spinal-cord-
injury/basics/Pages/anatomy.aspx
• https://en.wikipedia.org/wiki/Lumbar_vertebrae
• http://multimedia.3m.com/mws/media/642125
O/back-and-neck-joint-fact-sheet.pdf
• http://www.ncbi.nlm.nih.gov/pubmed/25503596

16. THANK YOU 