Muscles Of The Lower Back / Muscles Of The Lumbar Spine Of The Trunk

Muscles Of The Lower Back The pain may be caused by. The pain may be caused by. On the flip side, tight and/or weak muscles in a major muscle group like the hip flexors can cause persistent pain. The biggest muscle is lats muscle, then there are traps muscle and your lower back. The muscles of the lower back, including the erector spinae and quadratus lumborum