Flexors of lumbar spine are all EXCEPT:
Forward flexors: Rectus abdominis, external abdominal oblique, internal abdominal obliques, transversus abdominis and iliacus-psoas. Lateral flexors: Ipsilateral contraction of the oblique and transversus abdominal muscles and quadratus lumborum.
Erector spinae
External oblique muscle
Internal oblique muscle
Rectus abdominis
Abdominal wall ,Inguinal and Femoral region