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Date this page was last updated: 07/02/2007 07:54:49 PM

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Role of magnetic resonance imaging in entrapment and compressive neuropathy?what, where, and how to see the peripheral nerves on the musculoskeletal magnetic resonance image: part 2. Upper extremity
Kim, Sungjun., et al. ? The diagnosis of nerve entrapment and compressive neuropathy has been traditionally based on the clinical and electrodiagnostic examinations. As a result of improvements in the magnetic resonance (MR) imaging modality, it plays not only a fundamental role in the detection of space-occupying lesions, but also a compensatory role in clinically and electrodiagnostically inconclusive cases. Although ultrasound has undergone further development in the past decades and shows high resolution capabilities, it has inherent limitations due to its operator dependency...
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Is the body-coil at 3 Tesla feasible for the MRI evaluation of the painful knee? A comparative study
Lutterbey, G., et al. ? The purpose of this study was to compare the in-built body coil of the 3.0-Tesla (T) scanner with a dedicated surface coil of a 1.5 T system regarding knee imaging. We performed an intraindividual prospective clinical trial on 17 patients with knee pain using magnetic resonance imaging (MRI) at 1.5 and 3.0 T systems equipped with identical gradient systems. Proton-density-weighted turbo spin echo sequences with the same spatial resolution and comparable contrast parameters were used. A quantitative measurement of signal to noise ratio (SNR), relative contrast (RC) and contrast to noise ratio (CNR) between muscle and bone marrow was performed...

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Reliability of B-mode ultrasonography for abdominal muscles in asymptomatic and patients with acute low back pain
Asghar Norasteh M.S.P.T., et al. - The purpose of this methological study was to develop a reliable method for measuring transversus abdominis, rectus abdominis, external oblique and internal oblique muscles in asymptomatic human subjects and patients with acute low back pain (ALBP)...The results of this study indicate that the measurement of abdominal muscle thickness with B-mode ultrasonography can be performed reliably even in patients with ALBP...

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Comparison of musculoskeletal ultrasound practices of a rheumatologist and a radiologist
G. Raftery, et al. - Conclusion: MSUS performed by the rheumatologist was predominantly requested by rheumatologists to aid diagnosis of synovial and tendon inflammation and to guide injections, while MSUS performed by the radiologist was predominantly requested by orthopaedic surgeons to aid diagnosis of structural pathology. Curriculums in MSUS designed for rheumatologists may need to place appropriate emphasis on the identification of synovial and tendon inflammation, and injection guidance...

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The Diagnosis of Meniscus Tears: The Role of MRI and Clinical Examination
Ryzewicz, Mark MD, et al. - Magnetic resonance imaging (MRI) and clinical examination are tools commonly used in the diagnosis of meniscus tears. It has been suggested routine MRI before therapeutic arthroscopy for clinically diagnosed meniscus tears will reduce the number and cost of unnecessary invasive procedures...

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Reproduction of the Lumbar Lordosis: A Comparison of Standing Radiographs Versus Supine Magnetic Resonance Imaging Obtained with Straightened Lower Extremities
Marianne Logtholt Andreasen MSc, et al. - This study investigates whether it is possible to reproduce the lumbar lordosis in the upright position during magnetic resonance imaging (MRI) by positioning the patient supine with straightened lower extremities and investigates intra- and interexaminer reliability of measurements of the lumbar lordosis on radiographs and MRI...Conclusion: The findings of this study show that lumbar lordosis in the upright position can be reproduced by positioning the patient supine with straightened lower extremities...

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MR imaging of osteochondral grafts and autologous chondrocyte implantation
Trattnig, S., et al. - Surgical articular cartilage repair therapies for cartilage defects such as osteochondral autograft transfer, autologous chondrocyte implantation (ACI) or matrix associated autologous chondrocyte transplantation (MACT) are becoming more common. MRI has become the method of choice for non-invasive follow-up of patients after cartilage repair surgery...

 
Increased Diagnostic Information and Understanding Disease: Uncertainty in the Diagnosis of Developmental Hip Dysplasia
Andreas Roposch, MD, MSc, et al. - Great advances have been made in developing strategies to improve the quality of medical care in the past decade; these advances include better diagnostic technologies, such as ultrasonography (US), computed tomography, and magnetic resonance imaging...There is no consensus on the degree of acetabular dysplasia that does or does not require treatment...
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The Athletic Hernia: A Systematic Review
Swan, Kenneth G Jr. MD, et al. - The athletic hernia is an obscure condition of uncertain etiology commonly seen in soccer and rugby players...Open and laparoscopic repairs produce excellent results, but the latter allows earlier return to play. Magnetic resonance imaging appears to have excellent diagnostic potential for athletic hernia...

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Evaluation of femoral head vascularization in slipped capital femoral epiphysis before and after cannulated screw fixation with use of contrast-enhanced MRI: initial results
Staatz, G., et al. - In this study we used contrast-enhanced magnetic resonance imaging (MRI) to evaluate the vascularization of the femoral head in children with slipped capital femoral epiphysis (SCFE) before and after cannulated screw fixation...We conclude that MRI allows for accurate evaluation of the femoral head vascularization before and after surgery in children with SCFE...

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Distribution of Posterior Tibial Displacement in Knees with Posterior Cruciate Ligament Tears
Martin S. Schulz, MD, et al. - Conclusions: Instrumented stress radiography is a useful testing method for objectively determining the amount of posterior tibial displacement of the knee in adults with a posterior cruciate ligament injury. With tibial displacement exceeding 12 mm, additional injury of secondary restraining structures should be considered. We recommend the use of stress radiography to grade and classify posterior knee laxity...

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Comparison of quantitative computed tomography-based measures in predicting vertebral compressive strength
Jenni M. Buckley, et al. - Patient-specific measures derived from quantitative computed tomography (QCT) scans are currently being developed as a clinical tool for vertebral strength prediction. QCT-based measurement techniques vary greatly in structural complexity and generally fall into one of three categories: (1) bone mineral density (BMD), (2) "mechanics of solids" (MOS) models, such as minimum axial rigidity (the product of axial stiffness and vertebral height), or (3) three-dimensional finite element (FE) models...

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Regional trabecular morphology assessed by micro-CT is correlated with failure of aged thoracic vertebrae under a posteroanterior load and may determine the site of fracture
Meena M. Sran, et al. - Conclusions: Whereas previous data indicated that BMD by DXA was not a good predictor of posteroanterior failure load, regional BV/TV of the spinous process base and middle regions, the sites of fracture, are correlated with posteroanterior failure load. Trabecular thickness differed significantly between the base of the spinous process and the lamina, and may have influenced the site of fracture...

 
Predictive value of 99mTc-sestamibi scintigraphy for healing of extremity amputation
Sarikaya, Ali, et al. - The purpose of this study was to determine whether 99mTc-sestamibi imaging can accurately predict the healing of amputation sites...Since healing of the stump was seen in all cases, outcome was correctly predicted by scintigraphy. This preliminary study supports the use of 99mTc-sestamibi scan in selecting the optimal amputation level consistent with subsequent stump healing...
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Anatomic Variants Associated with Peroneal Tendon Disorders: MR Imaging Findings in Volunteers with Asymptomatic Ankles
Nadja Saupe, MD, et al. - To evaluate prospectively, on magnetic resonance (MR) images in volunteers with asymptomatic ankles, various features of anatomic variants that are potentially associated with peroneal tendon disorders...Conclusion: Anatomic variants thought to predispose individuals to peroneal tendon disorders can be seen in volunteers with asymptomatic ankles...

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Quantifying peri-meniscal synovitis and its relationship to meniscal pathology in osteoarthritis of the knee
Grainger, Andrew, et al. - The objectives of this study were to validate a semiquantitative scoring system for estimating perimeniscal synovitis in osteoarthritic (OA) knees and to examine the relationship between the extent of synovitis and the degree of meniscal pathology using gadolinium-enhanced magnetic resonance imaging (MRI)...The results suggest the semiquantitative scoring system is valid for assessing perimeniscal synovitis. The relationship between meniscal pathology and adjacent synovitis requires further study...

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Role of magnetic resonance imaging in entrapment and compressive neuropathy?what, where, and how to see the peripheral nerves on the musculoskeletal magnetic resonance image: part 1. Overview and lower extremity
Kim, Sungjun, et al. - The diagnosis of nerve entrapment and compressive neuropathy has been traditionally based on the clinical and electrodiagnostic examinations. As a result of improvements in the magnetic resonance (MR) imaging modality, it plays not only a fundamental role in the detection of space-occupying lesions but also a compensatory role in clinically and electrodiagnostically inconclusive cases. Although ultrasound has undergone further development in the past decades and shows high resolution capabilities, it has inherent limitations due to its operator dependency...

 

MR Arthrography of the Glenohumeral Joint: Modified Posterior Approach without Imaging Guidance
Onofrio A. Catalano, MD, et al. - The purpose of the study was to prospectively perform magnetic resonance (MR) arthrography of the glenohumeral joint by using modified posterior approach without ultrasonographic or fluoroscopic guidance...Image quality was not compromised, and no gas bubbles were detected. The procedure was successful in all patients, with no complications...
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Electromyographic and Magnetic Resonance Imaging to Predict Lumbar Stenosis, Low-Back Pain, and No Back Symptoms
Andrew J. Haig, MD, et al. - Magnetic resonance imaging is commonly used to diagnose lumbar spinal stenosis. Some persons without symptoms have a small lumbar spinal canal...Conclusions: This prospective, controlled, masked study of electrodiagnosis and magnetic resonance imaging for older subjects showed that imaging does not differentiate symptomatic from asymptomatic persons, whereas electrodiagnosis does. We believe that radiographic findings alone are insufficient to justify treatment for spinal stenosis...

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CT-guided bone biopsy: Initial experience with a commercially available hand held Black and Decker drill
O. Buckley, et al. - To describe the use of a simple commercially available Black and Decker hand based drill in performing CT-guided bone biopsies...Conclusion: CT-guided bone biopsy using a hand held commercial drill has a technically high success rate with minimal complications...

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Reliability Analysis for Radiographic Measurement of Limb Length Discrepancy: Full-Length Standing Anteroposterior Radiograph Versus Scanogram
Sabharwal, Sanjeev MD, et al. - Patients with limb length discrepancy (LLD) often have associated angular deformities requiring a standing full-length radiograph of the lower limb in addition to a scanogram. The purpose of our study was to determine the intraobserver and interobserver reliability of measuring LLD with both techniques, using computed radiography...

 
SPECT-CT Images of an Ocular Coralline Hydroxyapatite Implant Visible on Bone Scintigraphy
Domange-Testard, Aude, et al. - A 57-year-old man underwent enucleation of the left eye for a choroidal melanoma, and a coralline hydroxyapatite ocular implant was inserted. Because of the development of hepatic lesions approximately 2 years later, bone scintigraphy was performed to detect bone metastases. The patient reported a 10-day yellow-green discharge from the left eye...
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MRI in psoriatic arthritis with hand and foot involvement
Ghanem, Nadir, et al. - Evaluation of MRI-findings in patients with involvement of psoriatic arthritis (PsA) in small joints in hands and feet...MRI allows the assessment of PsA-alterations of soft tissue, cartilage, bone, bone marrow, and adjacent tendon sheath in patients with hand and foot involvement...

 
Anatomically Based Guidelines for Core Needle Biopsy of Bone Tumors: Implications for Limb-sparing Surgery
Patrick T. Liu, MD, et al. - Diagnostic image-guided needle biopsy plays a vital role in the work-up and treatment of patients with extremity bone tumors. The radiologist and the orthopedic oncologic surgeon should take a team approach to this procedure, especially when the bone lesion might be a primary sarcoma for which limb-sparing surgery (LSS) would be considered...
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Radiologic Assessment of Reverse Shoulder Arthroplasty
Catherine C. Roberts, MD, et al. - This new prosthesis reverses the normal ball-and-socket relationship of the shoulder joint. As a result of replacement of the glenoid component with a ball and of the humeral head with a socket, the center of rotation is moved distally and medially, allowing more control of shoulder motion by the deltoid muscle...

 

Tibial Intraneural Ganglia in the Tarsal Tunnel: Is There a Joint Connection?
Robert J. Spinner MD, et al. - Intraneural ganglia are rare entities, and, as such, their pathogenesis has been extremely controversial. Recent evidence from intraneural ganglia occurring at more proximal sites?the peroneal nerve at the fibular neck (the most common site) and the tibial nerve at the knee?has suggested an articular origin rather than de novo formation...

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Ultrasonography and magnetic resonance imaging of heel fat pad inflammatory-oedematous lesions in rheumatoid arthritis
P. Falsetti, et al. - To study heel fat pad (HFP) inflammatory-oedematous lesions in selected patients with rheumatoid arthritis (RA) using ultrasonography (US) and power Doppler US (PDUS), to describe and compare US features of these lesions with those obtained with magnetic resonance imaging (MRI), and to describe changes in the lesions after a short-term follow-up with conventional or anti-tumour necrosis factor-alpha(TNF-alpha) therapy...Conclusions: Both US and MRI are capable of demonstrating structural abnormalities in the HFP. PDUS is useful to assess and monitor inflammatory vascularization of the HFP lesions...

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SPECT/Multislice Low-Dose CT: A Clinically Relevant Constituent in the Imaging Algorithm of Nononcologic Patients Referred for Bone Scintigraphy
Einat Even-Sapir, et al. - The purpose of this prospective study was to assess the role of SPECT/multislice low-dose (Msl) CT as a constituent in the imaging algorithm of nononcologic patients referred for 99mTc-methylene diphosphonate bone scintigraphy (BS)...Conclusion: SPECT/MslCT is a clinically relevant constituent in the imaging algorithm of nononcologic patients referred for BS...