There are many tests devised to provide information about sacroiliac joint (SIJ) pain and function. Only pain provocation SIJ tests have been shown to have satisfactory inter-examiner reliability and validity with respect to a meaningful reference standard. These tests apply stress to the SIJ to determine if the usual pain is produced or aggravated and have been described in the orthopaedic med...

INTRODUCTION Erosions of the sacroiliac joints (SIJ) on pelvic radiographs of patients with ankylosing spondylitis (AS) are an important feature of the modified New York classification criteria. However, radiographic SIJ erosions are often difficult to identify. Recent studies have shown that erosions can be detected also on magnetic resonance imaging (MRI) of the SIJ early in the disease cours...

From *Spine Technology and Rehabilitation, Fort Wayne, IN, Indiana University School of Medicine, Fort Wayne, IN, Associates in Rehab, Miami Beach, FL. Address Correspondence: Joseph D. Fortin, DO, Spine Technology and Rehabilitation, 7230 Engle Road, Suite 210, Fort Wayne, IN 46804. Email: [email protected] Funding: There was no external funding in preparation of this manuscript. Sacroiliac joint...

BACKGROUND The sacroiliac joint (SIJ) is a frequently underestimated cause of lower back (LBP). A simple clinical test of sufficient validity would be desirable. The aim of this study was to evaluate the diagnostic value of a new PSIS distraction test for the clinical detection of SIJ arthropathy and to compare it to several commonly used clinical tests. METHODS Consecutive patients, where a ...

OBJECTIVE To compare 2 years of radiographic sacroiliac joint (SIJ) changes in patients with recent onset axial spondyloarthritis (axSpA) receiving etanercept in a clinical trial (EMBARK) to similar patients not receiving biologics in a cohort study (DESIR). METHODS Endpoints were changes at week 104 per the modified New York (mNY) grading system in total SIJ score (primary endpoint) and net ...

OBJECTIVE To determine the physiologic effectiveness of multi-site, multi-depth sacral lateral branch injections. DESIGN Double-blind, randomized, placebo-controlled study. SETTING Outpatient pain management center. PATIENTS Twenty asymptomatic volunteers. BACKGROUND The dorsal innervation to the sacroiliac joint (SIJ) is from the L5 dorsal ramus and the S1-3 lateral branches. Multi-sit...

OBJECTIVES To investigate the additional value of T1 fat-saturated after gadolinium (T1/Gd) compared with T1 and short tau inversion recovery (STIR) sequence in detecting active lesions of the SI joints typical of axial SpA (axSpA) in a prospective cohort study, the SpondyloArthritis Caught Early (SPACE) cohort, and to assess its influence on final MRI diagnosis of the SI joint (MRI-SIJ) based ...

The sacroiliac joint (SIJ) is a common source of low back pain. The most appropriate method of confirming SIJ pain is to inject local anesthesia into the joint to find out if the pain decreases. Unfortunately, although the SIJ is a large joint, it can be difficult to enter due to the complex nature of the joint and variations in anatomy. In my experience a double needle technique for sacroiliac...

BACKGROUND Sacroiliac intraarticular injection by the traditional technique can be challenging to perform when the joint is covered with osteophytes or is extremely narrow. OBJECTIVE To examine whether there is enough space for the needle to be advanced from the L5-S1 interspinous space to the upper one-third sacroiliac joint (SIJ) by magnetic resonance image (MRI) analysis as an alternative ...

Large eddy simulations LES based on the Smagorinsky model can be conveniently used in the lattice Boltzmann method LBM because the strain rate tensor, Sij , used to determine the eddy kinematic viscosity can be calculated from the second-order moment of the nonequilibrium distribution function, and the current total nondimensional relaxation time can be determined explicitly. A new method is de...