What is pelvic tilt?
Pelvic tilt is the angle at which the pelvis rotates forward (anterior) or backward (posterior), affecting the lumbar spine and overall posture.
The pelvis can rotate in two main directions: anteriorly (forward) or posteriorly (backward). An anterior pelvic tilt tips the front of the pelvis downward, increasing the curve of the lower back and shifting weight toward the heels. This posture often accompanies tight hip flexors and weak abdominal muscles, common in people with desk jobs or prolonged sitting. A posterior pelvic tilt does the opposite, tucking the front of the pelvis upward and flattening the lumbar curve, sometimes resulting from tight hamstrings or overly engaged core muscles.
Either extreme affects how the spine sits and how the body distributes force during movement. An anterior tilt can increase strain on the lower back joints and discs, while a posterior tilt may reduce the spine's natural shock absorption. Pelvic position also changes gait mechanics: how the legs swing, where impact lands in the foot, and which muscles fire during walking or running.
Chiropractors assess pelvic tilt because it reveals structural imbalances that may cause pain, restrict mobility, or contribute to repetitive strain. Finding neutral pelvic position (slight anterior tilt) is part of addressing spinal alignment and back pain. Identifying tilting patterns helps practitioners understand whether muscle tightness, weakness, or habit is driving the issue and whether adjustments alone or combined approaches are needed.