Sacrum, Coccyx, Lumbar Spine

Question 1

Sacrum (Info)

Answer 1

o The sacrum is found at the base of the spine
o It made up of five fused vertebrae
o It is classified as an irregular bone
o Pyramidal in shape with a wide superior base and creates a kyphotic curve

Question 2

Coccyx (Info)

Answer 2

o The coccyx is four fused vertebrae
o It is classified as an irregular bone
o Similar to the sacrum, the wide portion is at its superior end, and continues the final kyphotic curve of the vertebral column

Question 3

Lumbar (Info)

Answer 3

o The 5 lumbar vertebrae are the largest and strongest in the vertebral column
o The bodies are oval and wide for optimal weight bearing
o L1 – L4 are considered typical lumbar vertebrae
o L5 is considered atypical
* Classified as Irregular

Question 4

Lumbar Spine

Palpable landmarks

(3)

Answer 4

PL:
* Lamina
* Transverse Processes
* Spinous processes

Question 5

Lumbar Spine

Non-Palpable Landmarks

(9)

Answer 5

• Mamillary Processes
• Body
• Pedicles
• Vertebral Notches
• Intervertebral Foramina
• Vertebral Foramen
• Accessory Processes
• Superior and Inferior Articular Processes
• Facets

Question 6

Sacrum

Palpable Landmarks

(9)

Answer 6

• Body
• Base
• Apex
• Ala
• Median Sacral Crest
• Intermediate Sacral Crest
• Lateral Sacral Crest
• Sacral Tuberosity
• Sacral Hiatus
• Sacral Cornu

Question 7

Sacrum

Non-Palpable Landmarks

(8)

Answer 7

• Transverse Lines
• Sacral Promontory
• Anterior Sacral Foramina
• Posterior Sacral Foramina
• Pedicals
• Lamina Sacral Canal
• Superior Articular Processes
• Auricular Surfaces

Question 8

Coccyx

Palpable Landmarks

(3)

Answer 8

• Base
• Apex
• Coccygeal Cornu