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PubMed1990

Magnetic resonance appearance of sacral insufficiency fractures.

Insufficiency fractures of the sacrum are a commonly recognized form of stress fracture typically occurring in elderly patients. As such patients usually present with low back pain, MR imaging is often performed initially as a means of evaluation. We present 5 patients with sacral insufficiency fractures imaged with MR. Metastatic disease was a leading clinical suspicion as all patients were elderly and three had known primary neoplasms. T1-weighted sequences demonstrated bands of decreased signal intensity, usually paralleling the sacral aspect of the sacroiliac joints and occasionally occurring as a horizontal band across the sacral body. Four of five patients underwent further evaluation with computed tomography (CT) or nuclear bone scanning, which confirmed the diagnosis of sacral insufficiency fracture. We conclude that MRI is sensitive but not specific in detecting sacral insufficiency fractures. As MR imaging is rapidly becoming the method of choice for evaluating back pain, it is important to consider this diagnosis in elderly persons.

Aged↗
PubMed1995

Fatigue fracture of the sacral bone associated with septic arthritis of the symphysis pubis.

Fractures of the pubic rami are almost invariably associated with fractures of the posterior arch of the pelvic ring. Two women, aged 50 and 67 years, with septic arthritis of the symphysis pubis attended by severe low back pain, were followed with CT and MR imaging of the pelvis, as well as bond scintigraphy in one patient. In the first patient sacral fractures with severe displacement were revealed, prompting stabilizing symphysiodesis. In the second patient an undisplaced fatigue fracture was confirmed in the right half of the sacrum. In patients with pelvic laxity following arthritis of the symphysis and post-traumatic osteolysis associated with low back pain, displaced or occult fractures of the bones adjacent to the sacroiliac joints should be considered.

Aged↗
PubMed1992

Rheumatic manifestations of infective endocarditis.

Rheumatic manifestations are common and varied in infective endocarditis. We performed a retrospective case analysis on 87 patients with 93 episodes of infective endocarditis admitted to Flinders Medical Centre over an 11 year period (1980-1990). Disabling musculoskeletal symptoms and signs were documented in 22 (25%) of the patients. Thirteen patients developed severe or moderately severe low back pain during their illness, two with radiological evidence of a septic discitis or vertebral osteomyelitis. Two patients developed polyarthralgia/arthritis, four had septic arthritis (all with acute Staphylococcus aureus endocarditis), three developed severe loin pain, two acute gout, two had severe buttock pain and sacroiliac joint tenderness and two each developed disabling jaw/facial pain, neck/scapular pain and flank pain respectively. Five patients presented initially to the orthopaedic or rheumatological unit for management of their musculoskeletal symptoms. Four of seven patients with Streptococcus bovis endocarditis demonstrated prominent low back pain supporting a previously noted association between this organism and back symptoms. Furthermore, in one patient who had three separate episodes of endocarditis involving three different organisms, florid back symptoms were only seen in the infective episode involving Streptococcus bovis.

Aged↗
PubMed1984

Case report: blastomycosis causing sciatic neuritis.

A patient presented with pain in the right lower back, radiating down the right leg. Initial pelvic X-rays did not reveal any lesion. A follow up computerized tomography (CT) scan and technitium scan showed a sharply lytic lesion of the right ilium extending to the right sacroiliac joint. Open biopsy revealed a granulomatous inflammation with many budding yeast from consistent with Blastomyces dermatitidis. Subsequent culture confirmed this identification. There was no other site of fungal infection. Two courses of Amphotericin B (each to 2 g total dose) failed to eradicate this infection. The patient is now responding to Ketoconazole.

Adult↗
PubMed1979

Total "internal" hemipelvectomy.

Several authors have described resections of tumorbearing parts of the pelvis including reconstructive plastic surgery. With extensive tumor growth present mutilating hemipelvectomies often have been the last resort. Even the most sophisticated prostheses hardly ever enabled the patients to walk again. We have therefore performed total "internal" hemipelvectomies in three cases. The necessary substitute consisted of half a pelvis made of polyacetal resin produced from a given model. The model's measures and shape was established by computer tomograms thus resulting in an individually shaped pelvis half. The operative procedure aims at the maintenance of osseous muscular insertions and origins and their reconstruction. Utmost care has to be taken in avoiding damage to nerves and vessels. Fixation of the implant is performed by screws aiming through the sacroiliac joint into ala and corpus of the sacrum and corticocancellous grafts incorporated in the implant. The symphyses are united by means of plate fixation. The hip joint is substituted by a total prosthesis. With the procedure described we have managed three cases of extensive malignant tumors of the pelvis. One patient suffered a nerve lesion and skin necrosis with infection. The two remaining patients are capable of weight-bearing and standing on the inflicted leg alone.

Adolescent↗
PubMed1995

Juvenile spondyloarthropathies: clinical manifestations and medical imaging.

The spondyloarthropathies comprise four distinct entities--ankylosing spondylitis, psoriatic arthritis, the arthritis associated with inflammatory bowel disease, and Reiter's syndrome and other related forms of reactive arthritis. Although these are distinct diseases, they have a number of clinical, radiologic, and genetic characteristics in common which permit them to be classified under the unifying term "spondyloarthropathy". They are diseases of young adults, and when they present in patients under 16 years of age we refer to them as the "juvenile" spondyloarthropathies. They must be distinguished from juvenile rheumatoid arthritis, which is a totally separate entity; however the distinction may not always be obvious. Involvement of peripheral and sacroiliac joints commonly occurs in the juvenile spondyloarthropathies. The peripheral arthritis may be erosive and associated with bone apposition at the joint margins. Axial involvement is usually a late finding. Dactylitis and tenosynovitis are frequently present early on. Enthesitis, a highly specific feature, occurs much more often in the juvenile spondyloarthropathies than in the adult forms and it may be the only presenting feature. The plain radiograph is the primary and most important imaging modality for the assessment of these diseases. However, an expanding role of magnetic resonance imaging is evident.

Adolescent↗
PubMed1997

Temporary external fixation for low back pain: is it worth doing?

Thirty-three patients with low back pain underwent spinal fusion following a positively predicting external fixation test. Thirty-two spinal fusions and one sacroiliac joint fusion were performed. The complications following the use of the external fixator were significant. The results following spinal fusion were not related to the positive response to the external fixator. Multiple variables affect the results of spinal fusion. We feel that the external fixator test in low back pain management is very invasive, and its use cannot be justified.

Adult↗
PubMed1992

Mechanisms of orientation of the pelvifemoral base during static loading of the lumbar spine in weight-lifters.

Under static loading during weight-lifting, the lumbosacral spine essentially exhibits horizontalisation of the base of the sacrum (superior plateau of S1). We have attempted to elicit the mechanism of this horizontalisation by means of radiographs. These do not demonstrate any movements of the sacroiliac joints or plasticity of the hip bones. However, a symmetrical rotation of the hip joints conditions a retroversion of the pelvic girdle which explains the horizontalisation of the upper sacral plateau. This fixation of the block of the pelvic girdle is under muscular control, so that this mechanism can be improved by appropriate training.

Adult↗
PubMed1986

Reiter's syndrome--a comparative study of patients with the complete and the incomplete syndrome.

Eighty patients with Reiter's syndrome (RS) were studied retrospectively. A comparison was made between patients with the complete syndrome and patients with the incomplete syndrome. A comparison was also made between patients with and without HLA-B27. There were no major differences in severity and duration of the arthritic symptoms or in mucocutaneous involvement between the complete and incomplete groups, which indicates that they, in fact, represent the same disease. Most of the patients with sacroiliac joint involvement belonged to the HLA-B27 positive group; otherwise there was no difference in arthritic symptoms between the HLA-B27 positive and the HLA-B27 negative group.

Adult↗
PubMed1986

Computerized tomography, clinical and X-ray correlations in the hemisacralized fifth lumbar vertebra.

One hundred and twenty patients with hemisacralization of the L5 vertebra associated with LBP underwent clinical, conventional X-ray and CT examinations. More than 50% of the patients had scoliosis. One third of the patients had disc lesions. Sacroiliac joint sclerosis was noted in two thirds of the cases. Almost all patients had an articulation between the hemisacralized side of L5 and the sacrum, which usually showed degenerative changes. Clinical symptoms are correlated to the CT and X-ray findings.

Adolescent↗
PubMed1994

Morbidity associated with patient positioning in extracorporeal shock wave lithotripsy of distal ureteral calculi.

In 115 patients with 123 distal ureteral stones located below the lower border of the sacroiliac joint, in situ extracorporeal shock wave lithotripsy (ESWL) was performed with a Siemens Lithostar Lithotriptor. Our initial experience with the prone position in 8 out of 49 cases did not reveal stone fragmentation and on the final treatment sessions shock waves were allowed to enter via the obturator or sciatic foramen whilst the patients were in the supine position, in order to compare the results of treatments performed in both positions. The mean number of treatment sessions per patient, mean number of shock waves per treatment sessions, mean shock voltage per session and mean fluoroscopy time per session were significantly lower in the supine group than in the prone group (p < 0.05 for all variables). ESWL of the distal ureteral stones in the prone position seems to have an associated patient morbidity when we compare the results of treatments performed in both positions.

Female↗
PubMed2000

Evaluation of the Finnish versions of the functional indices BASFI and DFI in spondylarthropathy.

The aim of the study was to compare and evaluate the usefulness of Finnish versions of two functional indices used in spondylarthropathies. Seventy consecutive inpatients with different kinds of spondylarthropathies filled in self-administered questionnaires: the Bath Ankylosing Spondylitis Functional Index (BASFI) and the Dougados Functional Index for spondylarthropathies (DFI). Cronbach's alpha as a coefficient of internal consistency was analysed for BASFI and DFI. Test-retest reliability was evaluated in 30 patients. For validity the functional indices were compared with the Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), erythrocyte sedimentation rate (ESR), spinal movement measures of chest expansion (CE), Schober S1 test and occiput-to-wall distance (OWD), and radiological changes in the lumbar spine (RTGLS) and sacroiliac joints (RTGSI). The reproducibility of the indices BASFI and DFI was good; the intraclass correlation coefficient (ICC) for reliability was 0.99 and 0.98, and the coefficient of internal consistency (Cronbach's alpha) was 0.94 for both BASFI and DFI. The functional indices correlated well with each other, r = 0.85 (95% CI 0.78-0.90). Validity in terms of correlation coefficients between disease activity index BASDAI and functional indices BASFI and DFI was 0.74 (95% CI 0.60-0.84) and 0.69 (95% CI 0.53-0.80), respectively. BASFI and DFI correlated with spinal mobility measurements and RTGLS, but DFI did not correlate with RTGSI. Neither BASFI nor DFI correlated with ESR and disease duration, and only DFI correlated with age. In conclusion, BASFI and DFI are reliable and valid for Finnish inpatients with spondylarthropathies. It is important to know that cultural differences do not reduce the usefulness of these indices.

Adult↗
PubMed2002

[Computed tomography for the assessment of posterior pelvic injuries in patients with isolated fractures of the pubic rami in conventional radiography].

To investigate the incidence of occult posterior injuries of the pelvic ring in patients with isolated fractures of the pubic rami, additional computed tomography (CT) was performed. Data from 70 patients were collected within a prolective study. Solitary fractures of the anterior pelvic ring based on conventional radiographic diagnosis were included. Spiral CT, slice thickness 5 mm, was carried out in all patients. In only 47% of cases was the diagnosis of isolated fractures of the pubic rami confirmed. A further 35 fractures of the sacrum and two partial disruptions of the sacroiliac joint were diagnosed using CT. All sacral fractures were incomplete, most were found at the anterior part of the bone. Furthermore, CT revealed three acetabular fractures. Dorsal injuries were significantly more frequent after high energy accidents. Clinical examination did not assist in the prediction of posterior injuries of the pelvic ring. There was no correlation between the extent of the anterior injuries in conventional x-ray and incidence of the posterior injuries in CT. None of the patients with dorsal injuries underwent operative treatment. In conclusion, CT is not required for the routine diagnosis of supposed isolated fractures of the pubic rami.

Aged↗
PubMed2005

[Evaluation of image quality of the Iso C3D image processor in comparison to computer tomography. Use in the pelvic area].

Intraoperative 3-D visualization using the Siremobil Iso C(3D) (Siemens, Erlangen, Germany) has been approved for use in spine and long bone surgery since its recent clinical launch. In preparation for the clinical use of the Siremobil Iso C(3D) in pelvic surgery, the aim of this study was to grade the quality of visualization in comparison with the gold standard of computer tomography in four therapy relevant pelvic regions in eight human cadavers, including SI screws to exemplify implants in the dorsal pelvic ring. Besides the influence of the body mass index and the interference of metal artefacts, visualization quality was evaluated in different pelvic regions (sacroiliac joint, acetabulum, femoral neck and anterior pelvic ring) using a score with five subgroups, rating the applicability of Siremobil Iso C(3D) in pelvic surgery. The grading of image quality in comparable standard projections was performed independently by three surgeons and three radiologists.Visualization quality appeared sufficient for both intraoperative and postoperative control in cases with a known preoperative diagnosis. There was no influence of body mass index found in any of the eight cadavers. Implants positioned in the dorsal pelvic ring reduced visualization quality, but sufficient estimation of bony structures was still possible. For primary diagnostics, computer tomography remains a clearly superior option due to better image quality. For intraoperative control of the reduction and positioning of implants in pelvic surgery, however, the additional intraoperative use of Siremobil Iso C(3D) is considered to offer clear advantages over current 2-D C-arm visualization tools.

Cadaver↗
PubMed2006

[Traumatic hemipelvectomy].

With an incidence of only 0.6% of all pelvic injuries, traumatic hemipelvectomy is a rare event. It is defined as open or closed avulsion of one hemipelvis with occlusion or disruption of the main vessels and lengthening or disruption of the nerves, often complicated by urogenital or anorectal injuries. The mechanism of injury in this case is a typical one with extreme abduction and external rotation of the leg, causing sacroiliac joint disruption and symphysis separation. Two other mechanisms described are avulsion when the leg becomes entangled in a piece of machinery or a massive crushing at the groin. After a fast treatment in the field, the patient described was treated with immediate open revision, tamponade and stabilization of the pelvis. Upper leg preservation by reconstruction of the femoral vessels with vascular prostheses was attempted. Because of a broad necrosis of soft tissues, early completion of the hemipelvectomy was performed. The patient recovered well. Miction and bowel evacuation as well as sexual function could be preserved. The resulting quality of life is high and the patient is socially reintegrated without problems.

Adolescent↗
PubMed2004

[Epidemiology and prognostic aspects of ankylosing spondylitis].

The spondyloarthritides (SpA) comprise ankylosing spondylitis (AS), psoriatic SpA (PsSpA), reactive SpA (ReSpA), arthritis associated with chronic inflammatory bowel disease (SpAIBD) and undifferentiated SpA (uSpA). There are characteristic clinical features of SpA: inflammatory back pain (IBP), asymmetric peripheral arthritis, enthesitis, anterior uveitis, positive family history and others. The SpA, mainly AS, are strongly associated with HLA B27. AS is the most frequent and potentially most severe subtype, next to PsSpA. The prevalence of all SpA is rather high and not much different from rheumatoid arthritis (RA) and AS patients carry a burden of disease similar to RA patients. The prognosis of AS has not been extensively studied but some factors have been identified. There is a clear role for imaging modalities in the diagnosis of AS. Changes in the sacroiliac joint as detected by radiography still constitute the basis for the diagnosis of AS (New York criteria 1984). A diagnosis of sacroiliitis as made by magnetic resonance imaging (MRI) provides more objective evidence to a diagnosis of IBP arguing in favour of SpA which is defined on the basis of the ESSG criteria 1991 mainly on a clinical basis. Radiographic spinal changes such as syndesmophytes are important for the staging and outcome of AS. MR based assessment of spinal changes in are now being increasingly used to assess disease activity of AS patients. The presence of spinal radiographic changes at time of presentation was found to be the best predictor of further deterioration using the score modified SASSS' in a recent study. Other clinical features such as hip arthritis, early onset of disease, dactylitis, oligoarthritis, limitation of spinal mobility and poor efficacy of nonsteroidal antiinflammatory drugs were found to also have negative prognostic value.

Diagnosis, Differential↗
PubMed1996

[Roentgen diagnosis and computerized tomography in inflammatory rheumatic diseases. Methods with a future?].

Plain-film radiography is an important and basic element in the assessment of inflammatory rheumatic diseases. Its various uses include assessment of inflammatory osseous destruction and the activity of inflammatory changes. Furthermore, the inflammatory collateral phenomena can indicate an acute clinical phase, and the articular soft tissue swelling and tenosynovitis are shown directly and indirectly very clearly. On the other hand, high-resolution computed tomography is very capable of showing cortical structures of bone complementary to MR. In some special clinical questions and anatomical regions, especially the axial skeleton, it delivers information of high specifity, partly for definitive diagnosis and partly for planning surgical procedures. The assessment of changes in the sacroiliac joints, sternoclavicular joints and craniocervical junction are domains of computed tomography.

Arthritis, Rheumatoid↗
PubMed2006

Sacral insufficiency fractures: current concepts of management.

BACKGROUND: Sacral insufficiency fractures (SIFs) are often overlooked in elderly patients presenting with low back and pelvic pain following no or minimal trauma. OBJECTIVE: The aim of this review is to raise awareness and outline the clinical presentation, methods of diagnosis and treatment of SIFs. DISCUSSION: Insufficiency fractures represent a special category of stress fractures that occur in bones with reduced mineral content and elastic resistance. SIFs, a well-defined subgroup of the latter group, are not uncommon, but lack of clinical suspicion results in many being undiagnosed. SIFs are set to become an important clinical entity of both social and economic significance as the Western population ages. Subtle clinical presentations and signs coupled with radiographic findings that can mimic other unrelated or overlapping conditions, such as sacroiliac joint infection, spinal stenosis and metastatic bone disease, often make SIF diagnosis a challenge. The aim of this review is to increase awareness among clinicians, highlighting SIFs as an important differential diagnosis to be considered when patients present with low back and pelvic pain and subsequently allow prompt management. The paper provides an overview of epidemiology, anatomical considerations, relevant pathophysiology and risk factors, presenting symptoms and signs, investigations and imaging techniques, differential diagnoses and current treatment methods available for the management of SIFs.

Bone Density Conservation Agents↗