Generally speaking, anterior pelvic tilt is a natural state of the pelvis, and many people have anterior pelvic tilt.
Abnormal anterior pelvic tilt is a pelvic position that does not fit the spine as well as the morphology of the lower extremities, which can easily cause increased lumbar lordosis and knee hyperextension, and in severe cases can cause lumbar spine slippage and spinal stenosis.
Some diseases including scoliosis deformity and hip dysplasia may cause abnormal anterior pelvic tilt.
Therefore, when you suspect that you have abnormal anterior pelvic tilt, you should visit an orthopedic surgeon as soon as possible.