Febuary 03 News Headlines

These are radiology news updates from other sites

Date this page was last updated: 01/07/2007 03:02:35 PM

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February 28, 2003   Sonographic Measurement of the Fetal Iliac Angle in Trisomy 21, 18 and 13 - Fetal Diagnosis and Therapy Conclusion: The proven larger iliac wing angle in neonates with Down's syndrome can be demonstrated sonographically during the pregnancy, especially during the second trimester, and may be useful in prenatal screening of trisomy 21. The sonographic measurement of the fetal iliac angle cannot be used as a marker for trisomy 18 and 13. We have shown that fetuses with trisomy 18 and 13, on average, have iliac angles only a few degrees larger than healthy fetuses...   Videoconferencing for orthopaedic outpatients: one-year follow-up - Journal of Telemedicine and Telecare We studied whether consultations via videoconferencing and traditional outpatient clinic visits differ in terms of the implementation of the patient management plan during a one-year follow-up...The study showed that videoconferencing is a valid alternative to outpatient clinic visits for orthopaedic specialist consultations...

February 27, 2003     Neoadjuvant Chemotherapy and Local Radiotherapy for High-Grade Osteosarcoma of the Extremities - Mayo Clinic Proceedings Conclusion: When used after effective induction chemotherapy for osteosarcoma of the extremities, radiation therapy can be a reliable modality to control local disease and preserve limb function...   Musculoskeletal Ultrasound: An Alternative Imaging Modality for Sports-Related Injuries - Topics in Magnetic Resonance Imaging This article reviews the applications of sonography to sports-related injuries in which its diagnostic performance may be comparable to magnetic resonance imaging...

February 26, 2003   Lack of relationships between cumulative methylprednisolone dose and bone mineral density in healthy men and postmenopausal women with chronic low back pain - Clinical Rheumatology These findings support the hypothesis of a non-existent relationship between cumulative GC dose and BMD outcomes in healthy men and women with a prior GC administration of at least 3 g...   The acrophysis: a unifying concept for enchondral bone growth and its disorders. I. Normal growth - Skeletal Radiology The companion article will explore abnormalities at acrophyseal sites, including metabolic bone disease and dysplasias...   Comparison of fixed-flexion positioning with fluoroscopic semi-flexed positioning for quantifying radiographic joint-space width in the knee: test-retest reproducibility - Skeletal Radiology Conclusion: Fixed-flexion, non-fluoroscopic radiography of the knee can provide reproducible JSW measurement using widely available X-ray equipment. This technique is more feasible for multicenter clinical studies and routine clinical use than are methods that rely on fluoroscopic alignment of the tibial plateau...   Malignancy in giant cell tumor - Skeletal Radiology Malignant giant cell tumor is a confusing term that in the past has been used to describe different types of giant cell-rich tumors. We try to clarify this term in this report...   Multifocal, metachronous, giant cell tumor of the lower limb - Skeletal Radiology A case of multifocal giant cell tumor in a skeletally immature male with documented metachronous disease of the lower limb is described followed by a review of the literature including treatment options and their outcomes...   FDG PET imaging guided re-evaluation of histopathologic response in a patient with high-grade sarcoma - Skeletal Radiology Evaluating the heterogeneity of the tumor at baseline and after response to therapy can provide insight into prognosis and treatment planning...   FDG-PET for preoperative differential diagnosis between benign and malignant soft tissue masses - Skeletal Radiology Objective: To evaluate the standardized uptake value (SUV) of [18F]2-deoxy-2-fluoro-d-glucose at positron emission tomography (FDG-PET) for preoperative differential diagnosis between benign and malignant soft tissue masses...   Giant cell reparative granuloma of the occipital bone - Skeletal Radiology We report on the imaging findings and pathological features of a GCRG of the occipital bone and discuss the differential diagnosis of this entity in this particular location, especially with giant cell tumor because of the therapeutic and prognostic implications...   A low-grade extraskeletal osteosarcoma - Skeletal Radiology A diagnosis of low-grade extraskeletal osteosarcoma was made on the basis of these histologic findings. The clinical course 47 months after a wide excision was uneventful...   Low-grade osteosarcoma of the maxillary sinus - Skeletal Radiology We briefly discuss paranasal sinus osteosarcomas...

February 21, 2003   Editorial: Ottawa ankle rules for the injured ankle - British Medical Journal What could possibly be more straightforward than the assessment of an injured ankle? Patients with ankle injuries, usually sustained recreationally or in a simple fall, attend emergency departments throughout the world in their hundreds of thousands every year. Most of these patients will have sustained simple injury to ligamentous soft tissue or a small avulsion fracture of no clinical significance...   Accuracy of Ottawa ankle rules to exclude fractures of the ankle and mid-foot: systematic review - British Medical Journal Conclusion: Evidence supports the Ottawa ankle rules as an accurate instrument for excluding fractures of the ankle and mid-foot. The instrument has a sensitivity of almost 100% and a modest specificity, and its use should reduce the number of unnecessary radiographs by 30-40%...   A radiographic study of the relationship between metatarsus adductus and hallux valgus - Journal of Foot & Ankle Surgery Conclusion: The data of this study suggests that there may be a clinical association between metatarsus adductus and hallux valgus. The need to further evaluate the role of metatarsus adductus angle in hallux valgus surgery is emphasized...

February 20, 2003   Intradiscal application of hyaluronic acid in the non-human primate lumbar spine: radiological results - European Spine Journal Conclusion: Control segments remained unaffected. Interdependence between the different methods validated the utilized methods of quantitative radiological assessment of degeneration. Hylan G-F 20 appears to be a possible adjunct in reducing postoperative degeneration in an animal nucleotomy model. It deserves further evaluation, despite the fact that the mechanisms of its effects are still speculative...   Lipid content in the musculature of the lower leg assessed by fat selective MRI: Intra- and interindividual differences and correlation with anthropometric and metabolic data - Journal of Magnetic Resonance Imaging Conclusion: The fat-selective MRI technique allows a reliable non-invasive measure of muscular lipids - even in muscle groups with inherent low LC - within a relatively short measurement time of about three minutes. The presented data reveal interesting interrelationships between LC and anthropometric and metabolic data, and therefore provide new insight into muscular fat metabolism...   T2 quantitation of articular cartilage at 1.5 T - Journal of Magnetic Resonance Imaging Conclusion: Use of a multiecho, multislice sequence for cartilage T2 measurements should be undertaken with the caution that substantial inaccuracy is introduced from stimulated echoes and MTC...   Imaging the physical and morphological properties of a multi-zone young articular cartilage at microscopic resolution - Journal of Magnetic Resonance Imaging Conclusion: The results from the young animal in this report, together with our observations from older animals, demonstrate that MRI and PLM can be used to study the epiphyseal expansion of cartilage in young animals during its growth and subsequent loss in older animals. An illustrative model for the structure of collagen fibrils in a humeral head is suggested as an extension to the classic three-zone model for young articular cartilage...   February 14, 2003   Vertebral chondroblastoma - Skeletal Radiology Conclusion: Vertebral chondroblastoma is a rare neoplasm that presents later in life than its appendicular counterpart. On imaging it is aggressive in appearance with bone destruction, soft tissue mass, and spinal canal invasion. The lesions contain variable amounts of mineral. Secondary aneurysmal cyst bone formation was not a feature in our study group...   Case Report: Intermittent dislocation of the flexor hallucis longus tendon - Skeletal Radiology Summary: Dislocation of the flexor hallucis longus tendon is an exceptional occurrence. To our knowledge, this is the first case ever reported of an intermittent dislocation in a 17-year-old woman; she was a synchronised swimmer. She consulted for a right internal retro-malleolar syndrome. Voluntary "snap" was triggered by a mechanism which combined maximal ankle dorsiflexion and interphalangeal plantar flexion of the toes. Non-enhanced dynamic helical CT and axial MRI were performed, which revealed the dislocation of the right flexor hallucis longus tendon outside the posterior intertubercular talar groove. Static and dynamic imaging would appear to be required to make this uncommon diagnosis...   Case Report: Progression from calcifying tendinitis to rotator cuff tear - Skeletal Radiology This report documents the clinical, radiographic and histologic findings in a 46-year-old man with calcifying tendinitis in his left shoulder which progressed to rotator cuff tear. The patient had a 1-year history of repeated calcifying tendinitis before being referred to our hospital. On the initial visit, radiographs and magnetic resonance imaging (MRI) revealed calcium deposition localized in the supraspinatus tendon without apparent tear. Three months after the first visit, MRI revealed a partial-thickness rotator cuff tear at the site of calcium deposition. Surgical and histologic findings demonstrated that calcium deposition was the cause of cuff rupture. To our knowledge, based on a review of the English literature, this is the first case report in which the progression from calcifying tendinitis to rotator cuff tear has been serially observed...   Case Report: Acetabular paralabral cyst: an uncommon cause of sciatica - Skeletal Radiology The association between tears of the acetabular labrum and paralabral cysts has been well documented, and magnetic resonance imaging (MRI) has been shown to be the most accurate noninvasive method of depicting not only the normal anatomic structures of the hip, but also the common pathologic processes such as labral tears and paralabral cysts. We present the case of an acetabular paralabral cyst that resulted in clinically symptomatic compression of the sciatic nerve...   Repeatability over time of posture, radiograph positioning, and radiograph line drawing: An analysis of six control groups - Journal of Manipulative and Physiological Therapeutics Conclusion: Posture, radiographic positioning, and radiographic line drawing are all very reliable/repeatable. When Chiropractic Biophysics standardized procedures are used, any pre-to-post alignment changes in treatment groups are a result of the treatment procedures applied. These results contradict common claims made by several researchers and clinicians in the indexed literature. Chiropractic radiologic education and publications should reflect the recent literature, provide more support for posture analysis, radiographic positioning, radiographic line drawing analyses, and applications of posture and radiographic procedures for measuring spinal displacement on plain radiographs...   The stubborn hip: Idiopathic avascular necrosis of the hip - Journal of Manipulative and Physiological Therapeutics Conclusion: Idiopathic avascular necrosis of the hip is a clinical entity characterized by pain in the hip made worse with activity and at night, which may radiate to the groin, back, or thigh. Often, physical exam and radiographic findings are equivocal, at which point advanced imaging such as magnetic resonance imaging should be ordered to identify the disease in its earliest stages...

February 14, 2003   Vertebral chondroblastoma - Skeletal Radiology Conclusion: Vertebral chondroblastoma is a rare neoplasm that presents later in life than its appendicular counterpart. On imaging it is aggressive in appearance with bone destruction, soft tissue mass, and spinal canal invasion. The lesions contain variable amounts of mineral. Secondary aneurysmal cyst bone formation was not a feature in our study group...   Case Report: Intermittent dislocation of the flexor hallucis longus tendon - Skeletal Radiology Summary: Dislocation of the flexor hallucis longus tendon is an exceptional occurrence. To our knowledge, this is the first case ever reported of an intermittent dislocation in a 17-year-old woman; she was a synchronised swimmer. She consulted for a right internal retro-malleolar syndrome. Voluntary "snap" was triggered by a mechanism which combined maximal ankle dorsiflexion and interphalangeal plantar flexion of the toes. Non-enhanced dynamic helical CT and axial MRI were performed, which revealed the dislocation of the right flexor hallucis longus tendon outside the posterior intertubercular talar groove. Static and dynamic imaging would appear to be required to make this uncommon diagnosis...   Case Report: Calcific tendinitis of the rotator cuff as a cause of drooping shoulder - Skeletal Radiology We describe a case of inferior glenohumeral subluxation or drooping shoulder secondary to acute calcific tendinitis of the rotator cuff. The various etiologies of drooping shoulder and the specific causes determining glenohumeral widening in our report are discussed. The importance in recognizing this uncommon complication of a common abnormal finding and correction by aspiration is stressed...   Case Report: Progression from calcifying tendinitis to rotator cuff tear - Skeletal Radiology This report documents the clinical, radiographic and histologic findings in a 46-year-old man with calcifying tendinitis in his left shoulder which progressed to rotator cuff tear. The patient had a 1-year history of repeated calcifying tendinitis before being referred to our hospital. On the initial visit, radiographs and magnetic resonance imaging (MRI) revealed calcium deposition localized in the supraspinatus tendon without apparent tear. Three months after the first visit, MRI revealed a partial-thickness rotator cuff tear at the site of calcium deposition. Surgical and histologic findings demonstrated that calcium deposition was the cause of cuff rupture. To our knowledge, based on a review of the English literature, this is the first case report in which the progression from calcifying tendinitis to rotator cuff tear has been serially observed...   Case Report: Acetabular paralabral cyst: an uncommon cause of sciatica - Skeletal Radiology The association between tears of the acetabular labrum and paralabral cysts has been well documented, and magnetic resonance imaging (MRI) has been shown to be the most accurate noninvasive method of depicting not only the normal anatomic structures of the hip, but also the common pathologic processes such as labral tears and paralabral cysts. We present the case of an acetabular paralabral cyst that resulted in clinically symptomatic compression of the sciatic nerve...   The stubborn hip: Idiopathic avascular necrosis of the hip - Journal of Manipulative and Physiological Therapeutics Conclusion: Idiopathic avascular necrosis of the hip is a clinical entity characterized by pain in the hip made worse with activity and at night, which may radiate to the groin, back, or thigh. Often, physical exam and radiographic findings are equivocal, at which point advanced imaging such as magnetic resonance imaging should be ordered to identify the disease in its earliest stages...   Repeatability over time of posture, radiograph positioning, and radiograph line drawing: An analysis of six control groups - Journal of Manipulative and Physiological Therapeutics Conclusion: Posture, radiographic positioning, and radiographic line drawing are all very reliable/repeatable. When Chiropractic Biophysics standardized procedures are used, any pre-to-post alignment changes in treatment groups are a result of the treatment procedures applied. These results contradict common claims made by several researchers and clinicians in the indexed literature. Chiropractic radiologic education and publications should reflect the recent literature, provide more support for posture analysis, radiographic positioning, radiographic line drawing analyses, and applications of posture and radiographic procedures for measuring spinal displacement on plain radiographs...

February 06, 2003   Measurement of radiographic joint space width in the tibiofemoral compartment of the osteoarthritic knee: Comparison of standing anteroposterior and Lyon Schuss views - Arthritis & Rheumatism Conclusion: Compared with the standing AP radiograph, PA imaging of the knee in 20-30° flexion (the schuss position) increases the reproducibility of radiographic JSW measurements in OA knees and the sensitivity to change in JSW in serial radiographs. Sensitivity to change in minimum JSW is notably increased by aligning the medial tibial plateau with the central x-ray beam in the Lyon schuss radiograph ...   Detection of radiographic joint space narrowing in subjects with knee osteoarthritis: Longitudinal comparison of the metatarsophalangeal and semiflexed anteroposterior views - Arthritis & Rheumatism Conclusion: These results demonstrate that evidence of the short-term reproducibility of a radiographic protocol is an insufficient basis on which to predict the quality of its longitudinal performance ...   Fasciitis in Amyopathic Dermatomyositis - Journal of Clinical Rheumatology Conclusion: We suggest that if MRI scans are ordered, as part of the work-up of dermatomyositis, a peripheral halo of increased signal should specifically be looked for, which could be interpreted as fasciitis based on this case report...   Postoperative Upper Extremity Radiographs Using the Image Intensifier: A Simple Adjunct to the “Inverted” C-Arm Technique - Journal of Orthopaedic Trauma Summary: When the C-arm is used as a table in upper extremity surgery, postoperative plain radiographs can be obtained by placing the x-ray cassette directly on the image intensifier. This has many advantages, including more rapid performance than conventional techniques, a high-quality image, and no need for a recovery room radiograph. Additionally, there is no overlying splint material to obscure image detail, and the extremity can be positioned as desired by the operating surgeon ...

February 05, 2003   Radiologic Evaluation of Adjacent Superior Segment Facet Joint Violation Following Transpedicular Instrumentation of the Lumbar Spine - Spine Conclusion: Facet joint violation occurred in just >30% of the patients and 20% of the screws in this study. This, therefore, raises the theoretical possibility of long-term deterioration in the clinical results following the use of transpedicular instrumentation ...