This article focuses on the (functional) anatomy and biomechanics of the pelvic girdle and specifically the sacroiliac joints (SIJs). The SIJs are essential for effective load transfer between the spine and legs. The sacrum, pelvis and spine, and the connections to the arms, legs and head, are functionally interrelated through muscular, fascial and ligamentous interconnections. A historical ove...

OBJECTIVE We tested the hypothesis that fat metaplasia on MRI of the sacroiliac joints (SIJ) increases the propensity for new bone formation in the spine of patients with spondyloarthritis. METHODS We assessed baseline T1-weighted and short τ inversion recovery SIJ MRIs from patients in the Follow Up Research Cohort in Ankylosing Spondylitis (FORCAST). Radiographic progression was assessed us...

The concept of productivity is at the heart of economic theory, management science and operational management of firms and organizations. Despite the theoretical and operational importance of this concept, in recent years, its absolutism has been challenged. Services are often at the heart of this critical debate. Both conceptually and methodologically, services are indeed a major challenge to ...

INTRODUCTION Sacroiliac joint (SIJ) dysfunction is associated with a marked decrease in quality of life. Increasing evidence supports minimally invasive SIJ fusion as a safe and effective procedure for the treatment of chronic SIJ dysfunction. The impact of SIJ fusion on worker productivity is not known. METHODS Regression modeling using data from the National Health Interview Survey was appl...

STUDY DESIGN A prospective cohort study. OBJECTIVE To determine the cause-effect relationship between fusion and sacroiliac joint (SIJ) degeneration after instrumented posterolateral lumbar or lumbosacral fusion. SUMMARY OF BACKGROUND DATA Adjacent segment degeneration following spinal fusion has attracted considerable attention. However, little attention has been paid to the SIJ, which is ...

Background: Sacroiliac joint (SIJ) pain presents as a deep and somatic pain, predominantly affecting the lower back and buttock and referring down the leg, sometimes as far as the foot. Given that the features of SIJ pain are non-specific and that this referred pain is similar to lumbar facet joint and lumbar disc pain, diagnostic local anesthetic injections (diagnostic blocks) into the SIJ are...

To determine the association between inflammatory and structural lesions on sacroiliac joint (SIJ) MRI and BMD and to identify risk factors for low BMD in patients with axial spondyloarthritis (axSpA). Seventy-six patients who fulfilled the ASAS axSpA criteria were enrolled. All underwent SIJ MRI and BMD measurement at the lumbar spine, femoral neck, and total hip. Inflammatory and structural l...

Low back pain (LBP) represents the second most common cause of visits to primary care physicians with the loss of productivity, income, and associated medical expenses resulting in a $60 billion expenditure in the USA on an annual basis [ 1 ]. The sacroiliac joint (SIJ) has been identifi ed as one of the causes of LBP 15–30 % of the time at the initial offi ce visit [ 1 ]. The SIJ is a true syn...

BACKGROUND Sacroiliac joint (SIJ) dysfunction is a prevalent cause of chronic, unremitting lower back pain. OBJECTIVE To concurrently compare outcomes after surgical and nonsurgical treatment for chronic SIJ dysfunction. METHODS A total of 148 subjects with SIJ dysfunction were randomly assigned to minimally invasive SIJ fusion with triangular titanium implants (n = 102) or nonsurgical mana...