Axial Anatomy: Lumbar Spine

Question 1

Lumbar movements

Answer 1

Flexion 50-60°
Extension 30°
Rotation 8-12°
Lateral flexion 25°

Question 2

Muscles and fascia of anterolateral wall

Answer 2

Muscles: EO,IO,RA,TA

Fascia- rectus sheath

Question 3

Muscles and fascia of posterior abdominal wall

Answer 3

Muscles- psoas major, iliacus, quadratus lumborum
Fascia- throacolumbar fascia
Diaphragm superiorly
Lumbar vertebrae and discs

Question 4

Thoracolumbar fascia attachements

Answer 4

Posterior layer- superficial to erector spinae
Attached to SP

Middle layer- between erector spinae and QL
Attached to TP tips

Anterior layer- deep to QL
Attached to anterior TP

Question 5

Rectus sheath

Answer 5

Anterior- EO and IO
Posterior - IO and TA

Layers interlace in midline = linea alba