Research progress of spinal-pelvic sagittal alignment based on sitting position imaging / 中华骨科杂志

ABSTRACT

Sitting is a common position in daily life. The spinal-pelvic sagittal alignment differs between different sitting positions. When the human body changs from erect sitting to natural sitting position, the thoracolumbar kyphosis increases, the global spine presents a "C" shape, the center of body weight moves forward and the pelvic retroverts. In different people, such as healthy people, back pain patients and patients with scoliosis, the spinal-pelvic sagittal alignment has a unique change when standing-to-sitting, which is usually characterized by forward shift of the body center, posterior rotation of pelvic and straightening of thoracolumbar curve. For elderly people or patients underwent internal fixation surgery, the spinal-pelvic sagittal alignment changes less when standing-to-sitting due to the decrease of spinal-pelvic motion. In clinical work, understanding the spinal pelvic sagittal plane sequence during patient sitting can provide guidance for preoperative planning and prognosis evaluation, and improve the quality of life of patients. This article systematically reviews the relevant literature on sitting imaging published from 2010 to 2023, sums up the latest progress of spinal-pelvic sagittal alignment based on sitting position imaging, summarizes the difference between different sitting postures, and demonstrats the changes of spinal-pelvic sagittal alignment in different people when standing-to-sitting, aiming to provide reference for clinical workers.