week 10 sem 2 ANATOMY

Question 1

Thoracolumbar fascia layers

Answer 1

• Posterior layer
• posterior to back muscles
• attaches to spinous processes of lumbar vertebrae
• Middle layer
• posterior to quadratus lumborum
• attaches to transverse processes of lumbar vertebrae
• Anterior layer
• anterior to quadratus lumborum
• attaches to transverse processes of lumbar vertebrae
• Lateral to iliocostalis lumborum & quadratus lumborum - 3 layers join together

Question 2

Thoracolumbar fascia functions

Answer 2

• act as a retinaculum for the back muscles
• provide attachment for anterior abdominal & limb muscles
• internal oblique, transverse abdominus, latissimus dorsi, gluteus
  maximus
• contributes to stabilising lumbar vertebral column
• contributes to the stability of the sacroiliac joint  aids in transferring load
  between spine, pelvis and lower limb

Question 3

Lumbopelvic stability

Answer 3

• Co-contraction of the anterolateral abdominal
  wall muscles stiffens the trunk, important for
  trunk stability during high load tasks
• Changes in intra-abdominal pressure – contraction of TrA, diaphragm and pelvic
  floor muscles, increase in spinal stiffness
• Thoracolumbar fascia – tension here (TrA
  contraction) when combined with increased intra-abdominal pressure increases spinal
  stiffness

Question 4

lumbopelvic Movements in the Coronal Plane

Answer 4

Around an A-P axis
* Pelvic lift (tilt)
* Pelvic drop (tilt)
* Corresponding lateral flexion of the
lumbar spine (contralateral flexion
with pelvic drop)
* Corresponding hip abduction with
pelvic drop

Question 5

lumbopelvic Movements in the Sagittal Plane

Answer 5

• Around a transverse axis
• Anterior pelvic tilt
• Posterior pelvic tilt
• Corresponding increase lumbar
  lordosis with anterior pelvic tilt
• Corresponding hip flexion with
  anterior pelvic tilt

Question 6

lumbopelvic Movements in the Horizontal Plane

Answer 6

• Around a vertical axis
• Rotation to the right
• Rotation to the left
• Corresponding contralateral rotation
  of lumbar spine
• Corresponding contralateral hip
  external rotation