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https://www.readbyqxmd.com/read/28238666/clinical-impact-of-second-opinion-musculoskeletal-subspecialty-interpretations-during-a-multidisciplinary-orthopedic-oncology-conference
#1
Aleksandr Rozenberg, Barry E Kenneally, John A Abraham, Kristin Strogus, Johannes B Roedl, William B Morrison, Adam C Zoga
PURPOSE: To analyze the impact on clinical management when musculoskeletal radiologists render second-opinion consultations during multidisciplinary orthopedic oncology conference. METHODS: A PACS database was searched for secondary interpretations on outside MRI studies reviewed during a multidisciplinary orthopedic oncology conference from January 2014 to December 2016. Reports were compared with the original interpretations, when available. Reports were categorized using a 7-point scale: I (no discrepancy), II (undetected clinically insignificant abnormality), III (clinically insignificant difference in interpretation), IV (difference in imaging follow-up recommendation), V (equivocal initial interpretation with subsequent definitive subspecialty interpretation), VI (clinically significant difference in interpretation), VII (failure to detect a clinically significant abnormality)...
February 23, 2017: Journal of the American College of Radiology: JACR
https://www.readbyqxmd.com/read/28238017/imaging-findings-of-anterior-hip-dislocations
#2
REVIEW
Kyle Pfeifer, Michael Leslie, Kirsten Menn, Andrew Haims
Anterior hip dislocations are rare orthopedic emergencies resulting from high-energy trauma and have unique imaging characteristics on radiography, computed tomography (CT), and magnetic resonance imaging (MRI). Imaging findings on CT and MRI allow for the prompt recognition and classification of anterior hip dislocations, which guides patient management and reduces complications. The purpose of this article is to review imaging findings of anterior hip dislocations, specifically focusing on CT and MRI.
February 25, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28207659/evaluation-of-dti-parameter-ratios-and-diffusion-tensor-tractography-grading-in-the-diagnosis-and-prognosis-prediction-of-cervical-spondylotic-myelopathy
#3
Kun Wang, Zhi Chen, Fan Zhang, Qingxin Song, Canglong Hou, Yixing Tang, Jun Wang, Shiyue Chen, Yun Bian, Qiang Hao, Hongxing Shen
STUDY DESIGN: Prospective cohort. OBJECTIVE: To explore the correlations between diffusion tensor imaging (DTI) ratios and diffusion tensor tractography (DTT) grading with clinical symptoms and outcomes of cervical spondylotic myelopathy (CSM). SUMMARY OF BACKGROUND DATA: In addition to magnetic resonance imaging (MRI) and computed tomography, DTI may be useful in understanding pathophysiology of spinal cord in earlier stages of the CSM but it may be confounded by age and cervical level, and previous studies had small sample sizes...
February 15, 2017: Spine
https://www.readbyqxmd.com/read/28188484/estimation-of-attachment-regions-of-hip-muscles-in-ct-image-using-muscle-attachment-probabilistic-atlas-constructed-from-measurements-in-eight-cadavers
#4
Norio Fukuda, Yoshito Otake, Masaki Takao, Futoshi Yokota, Takeshi Ogawa, Keisuke Uemura, Ryota Nakaya, Kazunori Tamura, Robert B Grupp, Amirhossein Farvardin, Mehran Armand, Nobuhiko Sugano, Yoshinobu Sato
PURPOSE: Patient-specific musculoskeletal biomechanical simulation is useful in preoperative surgical planning and postoperative assessment in orthopedic surgery and rehabilitation medicine. A difficulty in application of the patient-specific musculoskeletal modeling comes from the fact that the muscle attachment regions are typically invisible in CT and MRI. Our purpose is to develop a method for estimating patient-specific muscle attachment regions from 3D medical images and to validate with cadaver experiments...
February 10, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28184356/how-trustworthy-are-clinical-examinations-and-plain-radiographs-for-diagnosis-of-scaphoid-fractures
#5
Mohammad Reza Ghane, Mohammad Saeid Rezaee-Zavareh, Mohammad Kazem Emami-Meibodi, Vahid Dehghani
BACKGROUND: Sometimes patients with a scaphoid fracture, especially in an acute phase of injury, can have normal radiographs and, therefore, initial diagnosis of the scaphoid fracture may be neglected. In this study, we determined the value in of clinical examination and a radiograph in the diagnosis of scaphoid fracture based on the results of a two-week follow-up magnetic resonance imaging (MRI). OBJECTIVES: In this study, sought to assess the value of using both a clinical examination (tenderness of scaphoid tubercle, tenderness of anatomical snuffbox, and compression test) and radiographic imaging in the diagnosis of scaphoid fractures based on the results after a two-week follow-up MRI...
November 2016: Trauma Monthly
https://www.readbyqxmd.com/read/28181025/surgical-management-of-chiari-i-malformation-based-on-different-cerebrospinal-fluid-flow-patterns-at-the-cranial-vertebral-junction
#6
Tao Fan, HaiJun Zhao, XinGang Zhao, Cong Liang, YinQian Wang, QiFei Gai
Chiari I malformation has been shown to present different cerebrospinal fluid (CSF) flow patterns at the cranial-vertebral junction (CVJ). Posterior fossa decompression is the first-line treatment for symptomatic Chiari I malformation. However, there is still controversy on the indication and selection of decompression procedures. This research aims to investigate the clinical indications, outcomes, and complications of the decompression procedures as alternative treatments for Chiari I malformation, based on the different CSF flow patterns at the cranial-vertebral junction...
February 9, 2017: Neurosurgical Review
https://www.readbyqxmd.com/read/28152257/imaging-near-orthopedic-hardware
#7
REVIEW
Matthew F Koff, Alissa J Burge, Kevin M Koch, Hollis G Potter
: Over one million total joint replacement surgeries were performed in the US in 2013 alone, and this number is expected to more than double by 2030. Traditional imaging techniques for postoperative evaluation of implanted devices, such as radiography, computerized tomography, or ultrasound, utilize ionizing radiation, suffer from beam hardening artifact, or lack the inherent high contrast necessary to adequately evaluate soft tissues around the implants, respectively. Magnetic resonance imaging (MRI), due to its ability to generate multiplanar, high-contrast images without the use of ionizing radiation is ideal for evaluating periprosthetic soft tissues but has traditionally suffered from in-plane and through-plane data misregistration due to the magnetic susceptibility of implanted materials...
February 2, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28120083/combination-of-magnetic-resonance-imaging-and-electrophysiological-studies-in-lumbar-disc-herniation
#8
Wenxiang Zhong, Jichao Wang, Wenchuan Zhang, Pengfei Liu, Massimiliano Visocchi, Shi-Ting Li
Objective We aimed to study the clinical value of magnetic resonance imaging (MRI) and electrophysiological studies in the diagnosis of lumbar disc herniation and in the evaluation of the therapeutic effect of discectomy. Methods In this study, 265 patients with LDH were treated with discectomy after assessment by the Japanese Orthopedic Association (JOA) score, MRI, and electrophysiological studies. All the patients were followed-up for 6 years. The effects of the operation were assessed by determining the angle between the nerve root canal and disc protrusion (AN value), the stenotic ratio of the spinal canal, the width of the lateral recess, motor conduction velocity (MCV), sensory conduction velocity (SCV), and nerve action potential (NAP) before and after operation...
2017: Acta Neurochirurgica. Supplement
https://www.readbyqxmd.com/read/28117119/gadolinium-contrast-enhancement-improves-confidence-in-diagnosing-recurrent-soft-tissue-sarcoma-by-mri
#9
Shinn-Huey S Chou, Daniel S Hippe, Amie Y Lee, Kurt Scherer, Jack A Porrino, Darin J Davidson, Felix S Chew, Alice S Ha
RATIONALE AND OBJECTIVES: To determine how utilization of postgadolinium magnetic resonance imaging (MRI) influenced reader accuracy and confidence at identifying postoperative soft tissue sarcoma (STS) recurrence among readers with various levels of expertise. MATERIALS AND METHODS: This retrospective study was institutional review board approved and Health Insurance Portability and Accountability Act compliant. Postoperative MRI from 26 patients with prior STS resection (13 patients with confirmed recurrence, 13 without recurrence) was reviewed...
January 20, 2017: Academic Radiology
https://www.readbyqxmd.com/read/28109309/role-of-magnetic-resonance-imaging-versus-ultrasound-for-detection-of-plantar-plate-tear
#10
REVIEW
Xin Duan, Lang Li, Dai-Qing Wei, Ming Liu, Xi Yu, Zhao Xu, Ye Long, Zhou Xiang
BACKGROUND: Plantar plate tears could be the reason of forefoot pain, affecting foot function. Magnetic resonance imaging (MRI) and ultrasound (US) were commonly used for the diagnosis of plantar plate tears. The decision of whether to use MRI or US carried some controversy. Our study aimed to find out the diagnostic accuracy of MRI versus US for plantar plate tears. METHODS: The database of the Cochrane Central Register of Controlled Trials (CENTRAL), PubMed, EMBASE, and relative orthopedic meetings until May 2016 were searched...
January 21, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28099278/recurrent-median-nerve-injury-in-a-weight-lifter
#11
Michael A Worobel, Bobby Alexander, Mark Hirsch, Vu Nguyen
Recurrent median neuropathy is an uncommon injury that can be commonly mistaken for other pathological causes. It is important to be aware of the potential causes and symptoms of injury as delay in diagnosis can lead to permanent decrease in hand function and disability. This case is a description of a 33-year-old male patient who previously presented with radicular symptoms and had complete resolution of his pain after a C7 selective nerve root block. Several months after presentation, he developed significant thenar atrophy, localized pain, and weakness associated with weight lifting activities...
February 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28008429/applications-of-patient-specific-3d-printing-in-medicine
#12
Martin Heller, Heide-Katharina Bauer, Elisabeth Goetze, Matthias Gielisch, Klaus E Roth, Philipp Drees, Gerrit S Maier, Bernhard Dorweiler, Ahmed Ghazy, Meik Neufurth, Werner E G Müller, Heinz C Schröder, Xiaohong Wang, Christian-Friedrich Vahl, Bilal Al-Nawas
Already three decades ago, the potential of medical 3D printing (3DP) or rapid prototyping for improved patient treatment began to be recognized. Since then, more and more medical indications in different surgical disciplines have been improved by using this new technique. Numerous examples have demonstrated the enormous benefit of 3DP in the medical care of patients by, for example, planning complex surgical interventions preoperatively, reducing implantation steps and anesthesia times, and helping with intraoperative orientation...
2016: International Journal of Computerized Dentistry
https://www.readbyqxmd.com/read/28001265/management-of-degenerative-cervical-myelopathy-an-update
#13
Andrei F Joaquim, Enrico Ghizoni, Helder Tedeschi, Wellington K Hsu, Alpesh A Patel
Introduction: Degenerative cervical myelopathy (DCM) is the most common cause of spinal cord dysfunction in adult patients. Patients generally present with a slow, progressive neurological decline or a stepwise deterioration pattern. In this paper, we discuss the most important factors involved in the management of DCM, including a discussion about the surgical approaches. Method: The authors performed an extensive review of the peer-reviewed literature addressing the aforementioned objectives...
December 2016: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/27998240/superparamagnetic-iron-oxide-nanoparticles-in-musculoskeletal-biology
#14
Shama R Iyer, Su Xu, Joseph P Stains, Craig H Bennett, Richard M Lovering
The use of platelet-rich plasma and mesenchymal stem cells has garnered much attention in orthopedic medicine, focusing on the biological aspects of cell function. However, shortly after systemic delivery, or even a local injection, few of the transplanted stem cells or platelets remain at the target site. Improvement in delivery, and the ability to track and monitor injected cells, would greatly improve clinical translation. Nanoparticles can effectively and quickly label most cells in vitro, and evidence to date suggests such labeling does not compromise the proliferation or differentiation of cells...
January 11, 2017: Tissue Engineering. Part B, Reviews
https://www.readbyqxmd.com/read/27923351/intra-and-inter-observer-reliability-of-a-new-standardized-diagnostic-method-using-spect-ct-in-patients-with-osteochondral-lesions-of-the-ankle-joint
#15
Geneviève Hassink, Enrique A Testa, André Leumann, Thomas Hügle, Helmut Rasch, Michael T Hirschmann
BACKGROUND: Single Photon Emission Computed Tomography-Computed Tomography (SPECT/CT) gains an important part of diagnostics in patients with osteochondral lesions (OCL). SPECT/CT is a hybrid imaging modality, which combines a 3D scintigraphy (SPECT) and computerized tomography (CT) into one single procedure and combines metabolic data, structural and mechanical information. The purpose of the study was to develop and evaluate a standardized method to anatomically localize and quantitatively analyze the bone SPECT tracer activity of the ankle joint using SPECT/CT...
December 7, 2016: BMC Medical Imaging
https://www.readbyqxmd.com/read/27921127/pre-authorization-processes-have-no-effect-on-patients-undergoing-knee-mri-in-a-pediatric-setting-when-evaluated-by-specialists
#16
Drew Pierce, J Herman Kan, Megan May, George S Bisset
OBJECTIVE: Pre-authorization processes are often used by medical insurance companies to reduce costs by managing the utilization of advanced diagnostic imaging, and their impact on patient care is unclear. The purpose of our study is to determine if a pre-authorization process increases the rate of surgically significant abnormal knee MRI and surgical referrals compared with patients referred from pediatric orthopedic specialists who do not undergo a pre-authorization process. MATERIALS AND METHODS: A retrospective study was performed; 124 patients were identified who were referred for knee MRI by a pediatric orthopedist...
February 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/27916579/distal-patellar-tendon-avulsion-in-association-with-high-energy-knee-trauma-a-case-series-and-review-of-the-literature
#17
Brian Capogna, Eric Strauss, Sanjit Konda, Alan Dayan, Michael Alaia
BACKGROUND: Patellar tendon rupture is rare in the general population. Typically, failure occurs proximally or at the mid-substance. Distal avulsion from the tibial tubercle in adults is rare and not well described in the orthopedic literature. METHODS: We present the largest series of patients with distal patellar tendon injury with associated multi-ligamentous disruption of the knee. A series of six patients with distal patellar tendon avulsion were identified at a single institution...
December 1, 2016: Knee
https://www.readbyqxmd.com/read/27916034/-the-mid-to-long-term-effect-of-wallis-lumbar-interspinous-dynamic-stabilization-on-the-adjacent-segment-degeneration
#18
X Yuan, C Kong, X M Chen, L B Cui, S J Xu, Y D Liu
Objective: To explore the mid- to long-term effect of Wallis interspinous dynamic stabilization system on the adjacent segment degeneration. Methods: From March 2009 to June 2010, in Department of Orthopedics, Beijing Luhe Hospital, Capital Medical University, 24 patients with L4-5 monosegmental lumbar disc herniation were treated with posterior lumbar decompression combined with Wallis interspinous dynamic fixation. Clinical outcomes were evaluated with visual analogue score (VAS) (back pain), VAS (leg pain) and oswestry disability index (ODI) score...
December 1, 2016: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/27904790/current-concepts-in-the-treatment-of-gross-patellofemoral-instability
#19
Grant Buchanan, LeeAnne Torres, Brian Czarkowski, Charles E Giangarra
: Patellofemoral instability is a painful and commonly recurring condition, which often must be managed surgically. Diagnosis can be aided by the use of a variety of physical exam signs, such as the Q angle, Beighton hypermobility score, glide test, J sign, patellar tilt test, and apprehension test. Imaging modalities including x-ray, CT, and MRI guide both diagnosis and management by revealing trochlear dysplasia, bony malalignment, and ligamentous injury that contribute to instability...
December 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27858239/cervical-compressive-myelopathy-flow-analysis-of-cerebrospinal-fluid-using-phase-contrast-magnetic-resonance-imaging
#20
Yun Jung Bae, Joon Woo Lee, Eugene Lee, Jin S Yeom, Ki-Jeong Kim, Heung Sik Kang
PURPOSE: To evaluate cerebrospinal fluid (CSF) flow in cervical compressive myelopathy (CCM), by both quantitative and qualitative analyses, using 3T cine phase-contrast magnetic resonance imaging (cine MRI). METHODS: From September, 2014 to June, 2015, we enrolled 45 subjects (18 women and 27 men, mean age, 61.7 ± 13.4 years) to undergo cervical cine MRI. The subjects were divided into three groups: no stenosis and cervical stenosis with and without intramedullary T2 hyperintensity...
January 2017: European Spine Journal
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