Ideal

• Thoracic spine is evenly and not excessively curved (convex posteriorly)
• Mid line of lateral chest is on plumb line
• Lumbar spine is evenly and not excessively curved (concave posteriorly)

You See

• Lack of lumbar lordosis (flat back)
• Pelvis is tilted posteriorly and/or displaced anteriorly
• Hip is extended
• Thoracic Spine is excessively kyphotic (to compensate for flat lumbar spine)

Likely Cause

• Posterior pelvic tilt
• Short hamstrings
• Long hip flexors
• Stretched PLL (Chaitow)
• Thoracic kyphosis
• Hip is hyperextended