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PubMed1996

Ultrasound evaluation of sacroiliac motion in normal volunteers.

RATIONALE AND OBJECTIVES: We demonstrated quantitatively, using ultrasound imaging, the passive range of motion of the normal sacroiliac (SI) joint. METHODS: Ultrasound images of the SI joints of 22 adults at rest and during a manual medicine maneuver designed to induce a passive range of motion in the SI joint were obtained. Differences between the baseline alignment of the SI joint and alignment during induced passive motion were observed and measured by six radiologists. RESULTS: Significant movement (> 2 mm) of at least one SI joint was demonstrated in 82% of the subjects using ultrasound recordings. Interobserver (r = .49 - .81) and intraobserver (r = .87) correlations were high. CONCLUSION: The results suggest that the range of passive SI joint motion is more than 2 mm, and may be up to 10 mm in some normal subjects, and that ultrasound imaging could be a useful method for assessing passive SI movement.

Adult↗
PubMed1993

Single photon emission computed tomography in the diagnosis of inflammatory spondyloarthropathies.

OBJECTIVE: The role of bone scintigraphy in the evaluation of patients with inflammatory spondyloarthropathy is controversial and previous studies have reported a lack of sensitivity and specificity. The aim of our study was to determine whether single photon emission computed tomography (SPECT) scanning would enhance the clinical utility of bone scintigraphy in the detection of inflammatory axial disease, in particular sacroiliitis. METHODS: Twenty patients with definite sacroiliitis (New York criteria > 1) on plain film radiographs and 20 age matched controls were studied. Bone scintigraphy and SPECT scanning were carried out 2 h after an intravenous injection of 99mTc imidodiphosphonate (IDP). A quantitative and qualitative assessment of radiopharmaceutical uptake in the sacroiliac (SI) joints was derived from planar films and a qualitative analysis of uptake in the SI joints was derived from SPECT scans. All films were read without knowledge of patient identification. RESULTS: Quantitative analysis of planar films did not identify any difference between study and control groups (p > 0.05). Qualitative assessment of planar films identified features of sacroiliitis more frequently in patients than in controls (p < 0.05) with a sensitivity of 25% and a specificity of 95%. SPECT scanning also revealed enhanced radiopharmaceutical uptake in the SI joints more frequently in patients than in controls (p < 0.001) with a sensitivity of 85% and a specificity of 90%. Increased uptake in the lumbar facet joints and costovertebral joints was identified in 3 patients. Similar abnormalities were not detected in the control group. CONCLUSION: Our results indicate that SPECT scanning is both sensitive and specific for the detection of established sacroiliitis and may also identify inflammatory disease at other sites in the spine.

Adult↗
PubMed1990

Inflammatory sacroiliitis in childhood.

A 27-month-old boy and a 10-month-old girl with unilateral inflammatory sacroiliitis are described. Both presented with refusal to walk or to stand. Increased erythrocyte sedimentation rate and negative HLA-B27 were found in both cases. There were no laboratory findings to suggest an underlying rheumatic disease. Radiograms of the sacroiliac (SI) joints, lumbosacral spines and the hip joints were normal. Joint/bone scan revealed increased radionuclide activity over the involved SI joints in both cases. Computerized tomograms of the SI joints were abnormal in one patient. Both patients improved with aspirin, recovered and had no sequelae. Inflammatory sacroiliitis appears to be transient and benign. It is a rare event in young children. Possibly some of them are being treated as though they had septic arthritis.

Arthritis↗
PubMed1994

Use of dynamic magnetic resonance imaging with fast imaging in the detection of early and advanced sacroiliitis in spondylarthropathy patients.

OBJECTIVE: To evaluate the new magnetic resonance imaging (MRI) method of dynamic MRI with fast imaging in the diagnosis of sacroiliitis among patients with spondylarthropathy. METHODS: Fifteen patients with a history of inflammatory back pain without radiographic evidence of grade II or greater sacroiliitis (group 1), 25 patients with definite ankylosing spondylitis (group 2), and 12 patients with noninflammatory spinal pain (controls) (group 3) were examined. Dynamic MRI with fast imaging was performed after intravenous bolus injection of the contrast agent gadolinium-diethylenetriamine pentaacetic acid. The degree of enhancement was graded as representing acute sacroiliitis, latent sacroiliitis, or no sacroiliitis. RESULTS: Acute sacroiliitis was detected in 22 of 30 sacroiliac (SI) joints in group 1 patients and in 27 of 50 SI joints in group 2 patients; latent sacroiliitis was seen in 25 of 80 SI joints in patients from groups 1 and 2. No group 3 patient was found to have sacroiliitis. CONCLUSION: Early sacroiliitis can be demonstrated by dynamic MRI in spondylarthropathy patients in whom abnormalities are not revealed by conventional radiography.

Adolescent↗
PubMed1991

The relationship of clinical and laboratory measurements to radiological change in ankylosing spondylitis.

Methods for scoring the severity of radiological change in patients with ankylosing spondylitis using plain X-rays of the sacroiliac (SI) joints and lumbar spine and computerized tomographic (CT) scans of the SI joints were evaluated in a cohort of 70 patients. Analysis of reproducibility was by the kappa statistic. Significant change over 12 months in a subgroup of patients was demonstrated by these scores. Ankylosis correlates negatively with erosions and sclerosis and the change in SI joint ankylosis correlates negatively with change in SI joint erosions as seen on CT scan. The clinical and laboratory correlates of these findings were examined. Pain, stiffness and sleep disturbance correlated positively with increasing SI joint sclerosis on CT scanning (r = 0.45; P less than 0.05) but negatively with ankylosis (r = -0.43; P less than 0.05). Orosomucoid levels predicted an increase in the radiological lumbar spine score. No other clinical or laboratory variable predicted radiological change.

Cohort Studies↗
PubMed2002

Lumbar stiffness but not thoracic radiographic changes relate to alteration of lung function tests in ankylosing spondylitis.

Involvement of the costovertebral (CV) and costotransverse (CT) as well as the sacroiliac (SI) joints is known to occur in patients with ankylosing spondylitis (AS). The functional significance of these changes is not clear. We have performed clinical and radiological evaluations and assessed the effect of joint involvement on pulmonary function. We detected radiologic evidence of involvement of the CV joint in 80% of patients and of the CT joint in 60 %. We found a direct relation between the severity of CV, CT and SI joint affliction, and the severity of CV and SI joints were related to time of evolution of the disease. Pulmonary function tests revealed neither restrictive nor obstructive defects. No relation was found between pulmonary function and CV and CT joint affliction. Patients with stiffer spines had a tendency to have pulmonary function tests within the lower limit of the normal range. In patients with AS diaphragmatic breathing might compensate the chest respiration to some extent.

Adult↗
PubMed1998

Use of dynamic magnetic resonance imaging to detect sacroiliitis in HLA-B27 positive and negative children with juvenile arthritides.

OBJECTIVE: Involvement of the sacroiliac (SI) joints is a hallmark of the spondyloarthropathies (SpA), especially, in early and later stages of ankylosing spondylitis in adults. The significance of sacroiliitis in juvenile SpA is less clear and the diagnosis of juvenile SpA is difficult due to the mostly nonspecific or absent history of back pain in children and the time delay associated with the diagnosis of sacroiliitis by conventional radiographs. Our aim was to evaluate dynamic magnetic resonance imaging (MRI) of the SI joints in children and to assess the frequency and the determinants of SI joint involvement in juvenile SpA and other juvenile arthritides. METHODS: Clinical examinations and dynamic MRI were performed in 130 children < 16 years of age with joint complaints, 100 with probable SpA, and 30 controls. The degree of back pain was assessed by a visual analog scale (VAS) (0 = no pain, 10 = very severe pain). The following groups were defined before MRI investigation according to modified European Spondylarthropathy Study Group (ESSG) criteria for SpA: Group 1: undifferentiated SpA (uSpA, n = 41, 88% B27+); Group 2: differentiated SpA (n = 29, 97% B27+), comprising reactive arthritis (n = 16), ankylosing spondylitis (n = 9), psoriatic arthritis (n = 3), and arthritis in inflammatory bowel disease (n = 1); Group 3: patients with no signs of SpA other than oligoarthritis, here named juvenile chronic arthritis (JCA) II (n = 30, 93% B27+); Group 4: HLA-B27+ controls without arthritis (n = 12); and Group 5: HLA-B27-controls with various other non-SpA diagnoses (n = 18). MRI was evaluated according to published criteria allowing for differentiation between acute and chronic changes in SI joints. RESULTS: Acute sacroiliitis without chronic changes could only be detected by dynamic MRI: in 17 patients (11 in Group 1, 3 in Group 2, 3 in Group 3) together in 14/70 (20%) patients with SpA. All these 17 patients had normal pelvic radiographs. Using MRI acute and/or chronic sacroiliitis were found in 35 patients: 17/41 in Group 1 (41%), 15/29 in Group 2 (52%), and 3/30 (10%) patients in Group 3, but in no patients in Groups 4 and 5. Chronic SI joint changes > grade 1 were detected by MRI in 18/70 patients with SpA (25.7%). In comparison, radiographic changes > grade 1 were less often detected in 14/70 patients with SpA (20%) or 23/210 SI joints examined (11 %), compared to 29/210 SI joints found in the MRI examinations (14%) (p = 0.05). Among the 70 patients with SpA, those with MRI diagnosis of acute sacroiliitis had a significantly longer disease duration (62+/-34 vs 28+/-16 months; p = 0.01) and higher C-reactive protein (12+/-12 vs 9+/-14; p = 0.01), and also reported more back pain on VAS (4.3+/-3.6 vs 1.2+/-2.2; p = 0.001) than those without sacroiliitis. CONCLUSION: Dynamic MRI and MRI are useful to detect acute and chronic sacroiliitis in children. The main advantages in comparison with conventional radiographs are the ability to detect acute changes in the SI joints, the higher sensitivity to detect chronic changes, and clearly, the lack of radiation exposure; while the disadvantages are the high costs and the duration of the procedure. Sacroiliitis is fairly common in juvenile SpA and seems to be associated with disease intensity and duration.

Adolescent↗
PubMed1996

Septic sacroiliitis.

Two cases of septic sacroiliac (SI) joint arthritis are presented to illustrate the difficulty of diagnosing and treating this uncommon osteoarticular infection. The patients presented are a 68-year-old woman with septic sacroiliitis caused by Streptococcus agalactiae and a 20-year-old man with Salmonella infantis infection involving the SI joint. The recent literature is reviewed and compared with previously published series. Of the 177 cases we reviewed, 47 (27%) occurred in pediatric patients. The mean age was 20 years. Only six patients (3%) were older than 60 years of age. Magnetic resonance imaging (MRI) is most useful for defining extent of infection, osteomyelitis, and abscess formation in the SI joint. Computed tomography (CT) is valuable for defining the extent of bone involvement and for guidance of percutaneous needle arthrocentesis. Other imaging modalities are useful primarily in the initial evaluation of patients with a nonspecific presentation. Four to six weeks of intravenous (i.v.) antibiotic therapy is recommended. Indications for surgical intervention include abscess formation, osteomyelitis, sequestrum of necrotic bone, and failure to respond to i.v. antibiotic therapy.

Adult↗
PubMed1990

Pyogenic sacroiliitis in a rural population.

We describe 10 cases of pyogenic sacroiliitis occurring in a rural population. Seven were male and 3 were female with a mean age of 22.4 years. None was a recent intravenous drug abuser. Five patients had a history of recent pelvic trauma. 99mTechnetium scintiscans revealed increased sacroiliac (SI) joint uptake in 8 of 8 cases. Blood cultures were positive in 60% of patients. Staphylococcus aureus was isolated in 7 cases from blood and/or SI aspirates and Hemophilus influenzae type B in one case. Nine of 10 patients recovered completely. One underwent arthrodesis for recurrent SI pain without evidence of relapse of infection. Median followup was 18 months.

Adolescent↗
PubMed2003

[Sacroiliitis in children with spondyloarthropathy: therapeutic effect of CT-Guided intra-articular corticosteroid injection].

PURPOSE: The prospective investigation of the therapeutic effect of CT-guided intra-articular corticosteroid injection into inflammatory sacroiliac (SI) joints compared to conventional treatment with nonsteroidal anti-inflammatory drugs (NSAIDS) in children with juvenile spondyloarthropathy (jSpA) and the determination of the role of dynamic magnetic resonance imaging (MRI) in establishing the indication and monitoring the therapy. MATERIALS AND METHODS: The study comprises 89 children with known jSpA who were diagnosed by MRI to have a unilateral or bilateral sacroiliitis. Therapy with NSAIDS was initiated or continued in all 89 patients. Four weeks after the diagnostic MRI, two groups were distinguished according to the clinical response to NSAIDS, with group 1 consisting of 33 responders and group 2 of 56 non-responders. The patients of group 2 were treated with CT-guided intra-articular corticosteroid injection (low-dose injection) while the therapy with NSAIDS was continued. A total of 83 SI joints were punctured without complications, 27 bilaterally and 29 unilaterally. The indication for the intervention was based on inflammatory activity as determined by MRI. The therapy was monitored by clinical follow-up every 8 to 12 weeks over a period of 20 months. Follow-up by dynamic MRI was performed in all 56 children of group 2 and in 15 of the 33 children of group 1 within 8 +/- 4 months of the initial examination. RESULTS: A total of 87.5% of the children in group 2 showed a statistically significant decrease in their subjective complaints from 6.9 +/- 3.4 to 1.8 +/- 1.7 (p < 0.05) as measured on a visual analog scale (VAS from 0 to 10). Improvement was seen as early as 1.5 +/- 1.0 weeks after the intervention and lasted for a mean of 12 +/- 6 months. The children in group 1 already showed similar improvement of the VAS from 6.8 +/- 3.2 to 1.5 +/- 1.4 (p < 0.05) during the initial four weeks of NSAIDS therapy, with the improvement lasting for the 20-month observation period. The follow-up dynamic MRI (0.1 mmol/kg body weight) during therapy showed a statistically significant lower contrast-enhancement in both groups (group 1: 117 +/- 43 % versus 38 +/- 24 %, p < 0.05; group 2: 127 +/- 59 % versus 38 +/- 22 %, p < 0.05). One third of the patients of group 2 showed progression of joint destruction despite absence of subjective complaints. CONCLUSION: CT-guided intra-articular corticosteroid injection has proven an effective, symptomatic, and uncomplicated therapy of acute sacroiliitis in patients with jSpA. Dynamic MRI has a role in establishing the indication for intervention but its role for any follow-up is restricted to cases with inconclusive clinical response.

Adolescent↗
PubMed1987

Observer variation in grading sacroiliac radiographs might be a cause of 'sacroiliitis' reported in certain disease states.

Radiological sacroiliitis in Behçet's syndrome (BS) has been a subject of controversy. We have examined pelvic radiographs of 38 patients with BS and 28 age and sex matched controls which we reported previously, and also 17 with ankylosing spondylitis (AS), 27 with non-renal familial Mediterranean fever (FMF), and 33 with primary osteoarthrosis (OA). Initially, five observers assessed radiographs on two different occasions according to the New York criteria for sacroiliitis in a blind protocol. Later, three of them examined the various possible abnormalities of the sacroiliac (SI) joints after training sessions. Although the inter- and intraobserver variation was quite high, all observers found the expected changes in patients with AS. The abnormalities detected in the other diseases were either mild, inconsistent, or both. Erosions were confined to patients with AS, and osteophytes and glenoid sulci to patients with OA. We conclude that high observer variation in interpreting a film of the anteroposterior (AP) view of the pelvis for sacroiliitis may be a major cause of reported 'sacroiliitis' in BS and FMF.

Behcet Syndrome↗
PubMed1994

Early recognition of sacroiliitis by magnetic resonance imaging and single photon emission computed tomography.

OBJECTIVE: To evaluate the role of magnetic resonance imaging (MRI) and single photon emission computed tomography (SPECT) in the detection of sacroiliitis in patients with clinical features of inflammatory back disease but without conventional radiographic changes. METHODS: Twenty-four patients with inflammatory low back pain (ILBP) and normal or suspicious changes of sacroiliitis (New York criteria: 0-1) on conventional radiography, in addition to 12 control subjects were studied. MRI, bone and SPECT scans of the sacroiliac (SI) joints were obtained and interpreted without knowledge of patient identification. MRI scans were scored according to the modified New York criteria and examined for the presence of joint fluid, abnormalities in articular cartilage and in the underlying marrow signal. A quantitative and qualitative assessment of radiopharmaceutical uptake in the SI joints was derived from planar bone scan films and SPECT scans. RESULTS: MRI detected features of scaroiliitis in 54% of patients with ILBP and in 17% of controls (p = 0.07). Quantitative and qualitative analysis of planar bone scan films did not reveal any differences between the 2 patient groups. In contrast, SPECT scanning identified sacroiliitis in 38% of patients with ILBP compared to none in controls (p = 0.05). When MRI and SPECT scanning were combined there was evidence of sacroiliitis in 63% of patients with ILBP and in 17% of controls (p = 0.025). CONCLUSION: MRI and SPECT bone scanning provide objective and complementary evidence of sacroiliitis in patients with clinical features of inflammatory spinal disease in the absence of conventional radiographic changes.

Adult↗
PubMed2000

Efficacy of sacroiliac corticosteroid injections in patients with inflammatory spondyloarthropathy: results of a 6 month controlled study.

OBJECTIVE: To evaluate changes in articular symptoms, spinal mobility, and global function over 6 months after intraarticular injections of long acting corticosteroid into the sacroiliac (SI) joints of patients with inflammatory low back pain (ILBP). METHODS: Nineteen patients with symptoms of ILBP were studied. Thirteen (68%) had radiographic evidence of sacroiliitis. The remaining 6 patients (32%) had normal imaging studies and thus were considered to have mechanical low back pain. All patients received bilateral SI joint injections of triamcinolone hexacetonide (40 mg/joint) under computer tomographic guidance. Outcome variables included the duration of low back morning stiffness, back pain (by visual analog scale, McGill Pain Questionnaire), spinal mobility (chest expansion, Schober test, 10 cm segments test, finger-fibula distance), and self-report health status (SF-36). RESULTS: Both groups of patients showed a transient improvement in stiffness and pain, spinal mobility, and general health status that was most pronounced at 1-3 months after intraarticular therapy. This did not reach statistical significance (p > 0.05) and by 6 months, followup all outcome variables had reverted to pretherapy levels in both groups. CONCLUSION: These preliminary observations suggest that SI corticosteroid injections are ineffective in the management of patients with inflammatory spondyloarthropathy.

Administration, Topical↗
PubMed2001

The evaluation of sacroiliitis using 99mTc-nanocolloid and 99mTc-MDP scintigraphy.

The role of imaging studies in the evaluation of patients with sacroiliitis is controversial. We aimed to evaluate the role of nanocolloid and bone scintigraphy in patients with sacroiliitis and to investigate the clinical relevance of imaging findings. Thirty-two patients with clinically sacroiliac disease (nine females, 23 males, aged 22-47 years) underwent scintigraphic and radiographic examinations and all imaging studies were performed within 2 weeks. Twenty-five subjects were also included as a control group (10 females, 15 males, aged 20-51 years) for quantitative analysis of the bone scan. The quantitative analysis was done by using regions of interest drawn over the right and left sacroiliac (SI) joint and sacrum (S) and SI/S ratios were calculated. Abnormal uptake was defined as an uptake higher than the mean +/- 2 SD of the control SI/S values. Bone scintigraphy was performed using a three-phase technique and single photon emission computed tomography (SPECT). Nanocolloid scintigraphy (NS) was performed 1 h later, after administration of 370 MBq 99mTc-nanocolloid, and evaluated visually. Each of the scintigraphic examinations was performed on separate days within the same week. Sensitivity values were 25%, 47%, 69% and 97%, and specificity values were 80%, 90%, 95% and 90% in quantitative bone scanning (QBS), 99mTc-NS, planar and SPECT bone imaging, respectively, when the clinical findings were considered as the 'gold standard'. Our results showed that bone SPECT scanning was more sensitive than planar imaging, but planar imaging was the most specific method. SPECT was also the most associated technique with clinical findings. 99mTc-NS was neither specific nor sensitive enough in the detection of sacroiliitis although it could be helpful for the confirmation of inflammation.

Adult↗
PubMed1993

Sarcoidosis accompanied by pulmonary tuberculosis and complicated by sacroiliitis.

We report the unique occurrence of a unilateral sacroiliitis in a patient with active sarcoidosis accompanied by pulmonary tuberculosis. Convincing (clinical) evidence of sarcoidosis as the extremely rare cause of this articular involvement is presented. Discussion is focused on comparison of sarcoidosis and tuberculosis, particularly with respect to their articular involvement, and the literature of previously reported cases of sarcoid sacroiliitis is briefly reviewed.

Adult↗
PubMed1991

[Comparative study of various stabilization procedures in dislocation of the pelvic half joint].

Our experimental studies show that the most rigid methods of osteosynthesis were tested in the groups D, E and F. The operation methods in groups B and C with screw-arthrodeses of the sacro-iliac joint show the greatest load difference, but could not be evaluated statistically. Group A using the tension-wire-banding and group G with our PDS-banding have nearly as good results as the rigid fixation methods. From the biomechanical point of view we find the PDS-banding useful in the treatment of the ruptures of pelvic half-joints. Finally, after using the PDS-technique, the frequently very difficult removal of osteosynthesis material is unnecessary.

Biomechanical Phenomena↗
PubMed1996

Radiology and spondylarthritis.

Radiographs are characteristically required to define the nature of the disease process in spondylarthritis. They need rarely be repeated, except for complications or unusual manifestations of the underlying disease. To date, new techniques of radio-imaging have provided only minimal advantages, if any. (Berkowitz et al, 1991; Docherty et al, 1992; Gibbon, 1992; Ralston et al, 1992; Deyo, 1994; Jensen et al, 1994). The plain radiograph is still pivotal to our understanding of the disease.

Humans↗