[Medical Q&A] Can there be any problem with such a beautiful butt?

Author: Zhou Yi, Associate Professor of Xi'an Medical College

Reviewer: Xiao Xinli, Associate Professor of Xi'an Jiaotong University

Some people with an "S" shaped body may seem to have a "perky butt", but in fact it may be due to anterior pelvic tilt.

The normal pelvic position tilts forward at a certain angle. The pelvic tilt angle is the angle between the line between the anterior superior iliac spine (ASIS) and the posterior superior iliac spine (PSIS) and the horizontal line of the ground. The normal range is 7° to 15°. When it exceeds this range, it is considered to be excessive pelvic tilt, which is commonly known as "pelvic tilt". Pelvic tilt is a pathological phenomenon in which the pelvic position tilts forward at a certain angle. Its most obvious manifestation is the increase in the physiological curvature of the lumbar spine, the posterior kyphosis of the buttocks, the anterior lordosis of the lower abdomen, and the whole person's center of gravity tilting forward. When the pelvis tilts forward, the anterior and posterior muscles of the lumbar spine are unbalanced (the anterior abdominal muscles are weak, and the posterior erector spinae muscles are tight), and the anterior and posterior muscles of the hip joint are unbalanced (the anterior iliopsoas muscles are tight, and the posterior gluteal muscles are weak).

Pelvic tilt can cause a lot of harm to the body, such as affecting body shape, causing chronic fatigue, constipation, dysmenorrhea, and back pain. Severe pelvic tilt can also cause problems such as spinal slippage, lumbar disc herniation, lumbar spinal stenosis, and scoliosis may occur over a long period of time.