how to study MRI of lumbosacral spine

1. HOW TO READ MRI OF
LUMBOSCRACAL SPINE
DR.SUNIL KR.CHAUDHARY
1ST YEAR RESIDENT

3. • Spine is a axial skeleton consists of total 26 vertebrae
• Begins at cranium and ends at the coccyx
• Has 5 divisions
1-Cervical (7 )
2-Thoracic ( 12 )
3-Lumbar ( 5 )
4-Sacral ( 5 fused )
5- Coccyx ( 4 fused )
• Vertebral body increases in size from cranial to caudal

4. • Curvatures of spine -

6. • Functions of spine
• Protection-its encloses the spinal cord , shielding
it from damage
• Support-Its carries the weight of the body above
the pelvis ( below the pelvis , the lower limbs take
over)
• Axis –the vertebral column forms the central axis
of the body
• Movement –it has role in both posture and
movement

7. • Vertebral structure
• While vertebrae have unique regional features
, each vertebrae has 3 main parts
1- Body
2-Vertebral Arch
3-Processes for muscle attachment

9. • Vertebral body –
• Anterior part of vertebrae
• Weight bearing component
• Vertebral Arch-
• Consists of 2 pedicles and 2 lamina
• Forms a hole for spinal cord called vertebral
foramen

10. • Vertebrae processes-
• Serve as attachment points for muscles and
create joints that allows for movement of the
spine
• Total 7 on each side
• Spinous process -1
• Transverse process -2
• Superior facet -2
• Inferior facet - 2

11. • Facet joint –
• Each vertebrae has four facet joints
• 1 pair that connects to the vertebrae above
(superior facets)
• 1 pair that connects to the vertebrae below
(inferior facet )

12. • Intervertebral disc –
• Location –between each vertebra of the spine
• Structure –Fibrocartilage
Annulus –Tough outer ring
Nucleus pulposus – soft gel /liqiud
• Function-
• Transmit weight of the body and cushion the
vertebrae
• Allow movement between vertebrae

13. • With age disc loses the ability to reabsorb
fluid

14. • Denis three column model of spine

20. • Stages of PIVD

22. • Types of PIVD

23. • Canal stenosis

24. • Spondylolisthesis

28. • Magnetic Resonance Imaging (MRI)
• Excellent for evaluation of soft tissue
structures : disc , ligaments , nerve roots ,
dural sac and spinal cord
•

32. • Reference
• Apley and Solomons Orthopaedics
• Moore anatomy

33. Thank you