Effect of pelvic tilt on standing posture

Area of Science:

• Biomechanical analysis of spinal and pelvic motion.
• Human anatomy and kinesiology.

Background:

• Low back dysfunction is often linked to lumbar lordosis.
• Posterior pelvic tilt is a common therapeutic recommendation for low back pain.

Purpose of the Study:

• To objectively determine the effect of pelvic tilt on spinal curves in the sagittal plane.
• To investigate pelvic tilt influence in healthy subjects and patients with chronic low back dysfunction (CLBD).

Main Methods:

• Utilized the Iowa Anatomical Position System, a noninvasive computerized method.
• Measured pelvic tilt and its effect on spinal curves in supine and standing positions.
• Included 32 healthy subjects and 15 patients with CLBD performing active pelvic tilt maneuvers.

Main Results:

• Voluntary pelvic tilt did not alter the thoracic spinal curve.
• Both anterior and posterior pelvic tilts significantly altered the lumbar curve.
• Anterior tilt increased lumbar curve depth; posterior tilt decreased it in both groups.

Conclusions:

• Pelvic tilt directly influences lumbar lordosis.
• Findings provide objective data on pelvic tilt effects relevant to low back dysfunction management.
• Therapeutic strategies involving pelvic tilt may modulate lumbar spinal curves.