Ideal

• Plumb line runs in middle between abdomen and back
• Plumb line anterior to SIJ

You See

• Hyperextension of lumbar vertebrae
• Excessive lumbar lordosis

Likely Cause

• Short (lumbar) spine extensors
• Short hip flexors
• Long abdominal muscles
• Long anterior longitudinal ligament
• Anterior pelvic tilt
• Lower crossed syndrome