A lateral member of the erector spinae group of muscles. The iliocostalis extends from the pelvis to the neck and divides into three regional pacts: the iliocostalis lumborum, iliocostalis thoracis, and the iliocostalis cervicis. Its origins are on the iliac crest and thoracic ribs. The insertions are on the ribs. The iliocostalis extends the vertebral column and helps to maintain an erect posture. When acting unilaterally, it bends the vertebral column sideways.
Subjects: Sports and Exercise Medicine.