Biomechanics of the spine

Question 1

Biomechanics of cervical spine

Answer 1

Largest range of motion
4 subunits: occipitocervical joint, atlantoaxial joint, c2-3 joint, subaxial cervical spine
Atlantooccipital joint: flexion and extension
Atlantoaxial joint: Rotation

Question 2

Biomechanics of thoracic spine

Answer 2

Least mobile segment
Additional stability and stiffness due to articulation with rib cage
Kyphotic
Rotation and lateral flexion

Question 3

Biomechanics of lumbar spine

Answer 3

Vertebral bodies are largest in lumbar spine
Flexion, extension, lateral flexion
No rotation