sacroiliac joints are the kind of joint that is the si joint.
sacroiliac joints are the kind of joint that is the si joint.
what kind of joint is the si joint?
sacroiliac joints
the sacroiliac joint or si joint (sij) is the joint between the sacrum and the ilium bones of the pelvis, which are connected by strong ligaments. in humans, the sacrum supports the spine and is supported in turn by an ilium on each side. the joint is strong, supporting the entire weight of the upper body. it is a synovial plane joint with irregular elevations and depressions that produce interlocking of the two bones. the human body has two sacroiliac joints, one on the left and one on the right, that often match each other but are highly variable from person to person.
sacroiliac joint
section::::cause.:role of sacroiliac joint (sij) in lower back pain (lbp).









































a 2005 review by cohen concluded,'the si joint is a real yet underappreciated pain generator in an estimated 15% to 25% of patients with axial lbp'. studies by ha, et al., show that the incidence of si joint degeneration in post-lumbar fusion surgery is 75% at 5 years post-surgery, based on imaging. studies by depalma and liliang, et al., demonstrate that 40-61% of post-lumbar fusion patients were symptomatic for si joint dysfunction based on diagnostic blocks.









































section::::cause.:smoking.
failed back syndrome