HOW TO STUDY MRI OF LUMBOSCRACAL SPINE.pptx

how to study MRI of lumbosacral spine

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

2. 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

3. Curvatures of spine -

4. 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

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

6. 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

7. 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

8. 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 )

9. 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

10. With age disc loses the ability to reabsorb fluid

11. Denis three column model of spine

12. Stages of PIVD

13. Types of PIVD

14. Canal stenosis

15. Spondylolisthesis

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

17. Reference Apley and Solomons Orthopaedics Moore anatomy

18. Thank you