Iliocostalis
Musculus iliocostalis
MuscularDeep musclesWhole bodyLeft and right
View left in 3D View right in 3D
- What it is
- Lateral column of the erector spinae, rising from the sacrum and iliac crest (common erector tendon) along the angles of the ribs to the transverse processes of C4–C6 (lumborum, thoracis and cervicis parts).
- Function
- Extends the spine and bends it to its own side; the lumbar part helps depress the lower ribs.
- Size
- About 60 cm long; up to 3 cm wide in the loin.
- Clinical note
- Spasm of the lumbar erector spinae is the usual cause of acute "lumbago".