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Skeletal Radiology

R H H Wellenberg, M F Boomsma, J A C van Osch, A Vlassenbroek, J Milles, M A Edens, G J Streekstra, C H Slump, M Maas
OBJECTIVE: To compare quantitative measures of image quality, in terms of CT number accuracy, noise, signal-to-noise-ratios (SNRs), and contrast-to-noise ratios (CNRs), at different dose levels with filtered-back-projection (FBP), iterative reconstruction (IR), and model-based iterative reconstruction (MBIR) alone and in combination with orthopedic metal artifact reduction (O-MAR) in a total hip arthroplasty (THA) phantom. MATERIALS AND METHODS: Scans were acquired from high- to low-dose (CTDIvol: 40...
February 15, 2017: Skeletal Radiology
Nicholas B Frisch, Nolan M Wessell, Kevin Taliaferro, Marnix Van Holsbeeck, Craig D Silverton
OBJECTIVE: The use of metal-on-metal and modular total hip arthroplasty is associated with potentially serious local and systemic complications. The primary aim of this study was to identify the prevalence of a pseudotumor in asymptomatic patients with a particular metal-on-metal hip prosthesis after a minimum follow-up of 5 years using ultrasound evaluation. A secondary purpose was to identify associations between the presence of pseudotumor and serum metal ion levels following implantation...
February 15, 2017: Skeletal Radiology
Violeta Nikac, Philip Blazar, Brandon Earp, Barbara N Weissman
Indications for hand surgeries include unremitting joint pain, deformity and stiffness, often secondary to arthritis. Several surgical options are available, including arthrodesis (fusion) and joint arthroplasty. Classically arthrodesis is performed in situations with poor bone stock and supporting soft tissues. Arthroplasty is reserved for patients and joints in which preservation of function is important and bone stock and soft tissue support are adequate. In this article we will review various techniques for arthrodesis and arthroplasty, their post-surgical imaging appearance, including key findings important to surgeons, and the findings that indicate post-surgical complications...
February 14, 2017: Skeletal Radiology
Zaid Jibri, Ryan Foster, Kawan Rakhra
No abstract text is available yet for this article.
February 14, 2017: Skeletal Radiology
Sarah Fenerty, Wei Shaw, Rahul Verma, Ali B Syed, Riya Kuklani, Jie Yang, Sayed Ali
Florid cemento-osseous dysplasia (FCOD) is a rare, benign, multifocal fibro-osseous dysplastic process affecting tooth-bearing areas of the jaw, characterized by replacement of normal trabecular bone with osseous tissue and dense acellular cementum in a fibrous stroma. It is one clinicopathologic variant in a spectrum of related non-neoplastic fibro-osseous lesions known as cemento-osseous dysplasias (CODs), thought to arise from elements of the periodontal ligament. Diagnosis primarily relies upon radiographic and clinical findings; unnecessary biopsy should be avoided, as inoculation with oral pathogens may precipitate chronic infection in these hypovascular lesions...
February 13, 2017: Skeletal Radiology
Liam Z Yapp, Liusaidh McClymont, Ian Beggs, Paul Gaston, Donald M Salter
We report the case of a 23-year-old man diagnosed with adult-onset idiopathic chondrolysis of the hip. Chondrolysis of the hip is a disorder most frequently seen in children who have suffered with slipped capital femoral epiphyses. Idiopathic chondrolysis of the hip is extremely rare and to our knowledge, its onset has never been documented in adults aged over 20. With reference to the available medical literature, we summarise the current clinical management of this unusual but important cause of young adult hip pain...
February 13, 2017: Skeletal Radiology
Claudio Pusceddu, Alessandro Fancellu, Nicola Ballicu, Rosa Maria Fele, Barbara Sotgia, Luca Melis
OBJECTIVE: To evaluate the feasibility and effectiveness of computed tomography (CT)-guided percutaneous screw fixation plus cementoplasty (PSFPC), for either treatment of painful metastatic fractures or prevention of pathological fractures, in patients who are not candidates for surgical stabilization. MATERIALS AND METHODS: Twenty-seven patients with 34 metastatic bone lesions underwent CT-guided PSFPC. Bone metastases were located in the vertebral column, femur, and pelvis...
February 13, 2017: Skeletal Radiology
Eduardo Baptista, Rafael Kubo, Durval C B Santos, Atul K Taneja
No abstract text is available yet for this article.
February 13, 2017: Skeletal Radiology
Carlo Urigo, Marie Claude Schenkel, Mathieu Assal, Stefano Bianchi
We report a case of desmoplastic fibroblastoma (DF) of the foot in a 65-year-old woman. The tumor presented as a slow-growing, painless mass located in the first intermetatarsal space of the right foot. Ultrasound showed a well-circumscribed hypoechoic lesion containing hyperechoic calcifications confirmed on standard radiographs. At magnetic resonance imaging (MRI), the mass appeared isointense to the muscles on T1-weighted (T1W) images, hyperintense on proton-density-weighted fat-saturated images, and presented scattered internal hypointense foci...
February 11, 2017: Skeletal Radiology
Thumanoon Ruangchaijatuporn, Kara Gaetke-Udager, Jon A Jacobson, Corrie M Yablon, Yoav Morag
A bursa is an extra-articular sac that may communicate with a joint and functions to decrease friction between tendons and either bone or skin. Bursae can be classified as native and non-native (adventitious) bursae. The native bursae are lined with a synovial membrane and occur at predictable anatomical sites; knowledge of these normal structures can help distinguish them from other pathological entities. An adventitious bursa can form at sites of friction rather than at predictable anatomical sites, but otherwise have imaging features similar to native bursae...
February 11, 2017: Skeletal Radiology
Ruchi S Patni, Deb K Boruah, Shantiranjan Sanyal, Bidyut B Gogoi, Maninder Patni, Rosy Khandelia, Nripen Gogoi
OBJECTIVE: The purpose of this study is to evaluate the role of multi-voxel proton MR spectroscopy in differentiating benign and malignant musculoskeletal tumours in a more objective way and to correlate the MRS data parameters with histopathology. METHODS AND MATERIALS: A hospital-based prospective study was carried out comprising 42 patients who underwent MRI examinations from 1 July 2013 to 30 June 2014. After routine sequences, single-slice multi-voxel proton MR spectroscopy was included at TE-135 using the PRESS sequence...
February 11, 2017: Skeletal Radiology
Donald von Borstel, Roberto A Taguibao, Nicholas A Strle, Joseph E Burns
Giant cell tumor of the bone (GCTB) is a locally aggressive benign tumor, which has historically been treated with wide surgical excision. We report a case of a 29-year-old male with histology-proven GCTB of the distal ulna. The initial imaging study was a contrast-enhanced magnetic resonance imaging (MRI) examination of the left wrist, which was from an outside facility performed before presenting to our institution. On the initial MRI, the lesion had homogenous T2-hyperintense and T1-hypointense signal with expansive remodeling of the osseous contour...
February 11, 2017: Skeletal Radiology
Jennifer Sammon, Abhishek Jain, Robert Bleakney, Rakesh Mohankumar
OBJECTIVE: To assess the prevalence and magnetic resonance imaging appearance of metastasis presenting as a soft-tissue mass. MATERIALS AND METHODS: A retrospective chart review was performed on 51 patients who presented to an orthopedic oncology center with soft-tissue masses, with a histology-proven diagnosis of soft-tissue metastasis, over a 14-year period. Their magnetic resonance imaging, primary origin, and follow-up have been assessed. RESULTS: Soft-tissue metastasis was identified in patients ranging from 18 to 85 years old...
February 8, 2017: Skeletal Radiology
M Ather Siddiqi, Han-Soo Kim, Felix Jede, Ilkyu Han
OBJECTIVE: Due to minimal tissue violation in percutaneous core needle biopsy (CNB), in contrast to open biopsy, the risk of tumor seeding and subsequent local recurrence (LR) along the biopsy tract remains unclear in extremity soft tissue sarcoma (STS). This study sought to examine the association of CNB tract resection on LR in a large STS institutional database. MATERIALS AND METHODS: After a retrospective review of the 116 patients who underwent CNB prior to surgery for previously untreated non-metastatic extremity STS, 36 patients who did not have CNB tracts resected (CNB-NR) were matched with 36 who had CNB tracts resected (CNB-R) for the factors that are known to affect LR...
February 7, 2017: Skeletal Radiology
Radhika Sridharan, Mitchell Philip Engle, Naveen Garg, Wei Wei, Behrang Amini
OBJECTIVE: To determine if focal increased uptake at the rotator interval (RI) and/or inferior capsule (IC) on(18)F-FDG PET/CT ("positive PET") predicts the presence of adhesive capsulitis (AC). MATERIALS AND METHODS: Three populations were retrospectively examined. Group 1 included 1,137 consecutive (18)F-FDG PET/CT studies and was used to determine the prevalence of focal uptake at the RI or IC. Group 2 included 361 cases from a 10-year period with (18)F-FDG PET/CT and MRI of shoulder performed within 45 days of each other and was used to enrich the study group...
February 4, 2017: Skeletal Radiology
Andrea B Rosskopf, Florian M Buck, Christian W A Pfirrmann, Leonhard E Ramseier
OBJECTIVE: The aim of our study was to evaluate the reliability and interchangeability of femoral (FT) and tibial torsion (TT) measurements in children using magnetic resonance (MR) imaging compared to measurements on 3D models based on biplanar radiographs (BPR). MATERIALS AND METHODS: FT and TT were measured in 60 children (mean age 10.1 years; range 6.2-16.2 years; 28 female) using axial MR images by two readers. MR measurements were compared to measurements based on BPR-3D models by two separate independent readers...
February 3, 2017: Skeletal Radiology
Felix S Chew, Michael J Mulcahy, Jack A Porrino, Hyojeong Mulcahy, Annemarie Relyea-Chew
OBJECTIVE: Burnout is a job-related psychological syndrome with three aspects: emotional exhaustion, depersonalization, and perceived lack of personal accomplishment. Burnout is associated with deleterious effects on both workers and their work. When burnout affects physicians, their well-being, longevity, and care of patients are at risk. Recent studies concerning physician burnout treat specialists such as radiologists as one group. We studied burnout in musculoskeletal (MSK) subspecialist radiologists...
February 2, 2017: Skeletal Radiology
Dai Miyasaka, Yoshinori Sakai, Shinya Ibuchi, Hayato Suzuki, Norio Imai, Naoto Endo
OBJECTIVE: We aimed to clarify sex- and age-specific differences in three-dimensional and anatomic characteristics of femoral head coverage and acetabular morphology in healthy subjects. MATERIALS AND METHODS: The study included 120 healthy subjects (57 male, 63 female), stratified into groups according to age and sex. We used computed tomography data to measure various anatomic alignment parameters describing femoral head coverage and acetabular morphology. RESULTS: The lateral sector angle in the coronal plane, anterior sector angle in the sagittal plane, and posterior sector angles in the axial plane, which characterize femoral head coverage, did not differ significantly between males and females...
February 2, 2017: Skeletal Radiology
Judah Goldschmiedt, Chaitanya Shilagani, Himanshu Patel
Ultrasound (US)-guided therapeutic and diagnostic injections play an important role in day-to-day clinical practice for many radiologists. When compared with fluoroscopic or computed tomographic (CT) methods of localization, US offers the benefit of real-time confirmation of instrument position without exposing the patient to any ionizing radiation. Target delivery is usually confirmed by direct needle tip visualization and with real-time demonstration of capsular or bursal distention. While often more technically difficult in deeper anatomic spaces, larger patients and smaller delivery needles, US should still be considered the preferred method of image guidance because of these outlined benefits...
January 27, 2017: Skeletal Radiology
Ashton H Goldman, Kevin B Hoover
OBJECTIVE: Multiple radiographic acquisition techniques have been evaluated for their effect on measurements of acetabular morphology. This cadaveric study examined the effect of two acquisition parameters not previously evaluated: beam center position and source-to-detector distance. This study also evaluated the effect of reader differences on measurements. METHODS: Following calibration of measurements between two readers using five clinical radiographs (training), radiographs were obtained from two cadavers using four different source-to-detector distances and three different radiographic centers for a total of 12 radiographic techniques (experimental)...
January 22, 2017: Skeletal Radiology
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