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Skeletal Radiology

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https://www.readbyqxmd.com/read/28432396/weight-bearing-computed-tomography-findings-in-varus-ankle-osteoarthritis-abnormal-internal-rotation-of-the-talus-in-the-axial-plane
#1
Ji-Beom Kim, Young Yi, Jae-Young Kim, Jae-Ho Cho, Min-Soo Kwon, Seung-Hyuk Choi, Woo-Chun Lee
OBJECTIVES: To assess the incidence of abnormal internal rotation of the talus in the axial plane in patients with varus ankle osteoarthritis, and to determine whether this incidence differs from the severity of varus ankle osteoarthritis (moderate versus severe). MATERIALS AND METHODS: We retrospectively evaluated weight-bearing computed tomography (CT) and plain radiographs of 52 ankles with no abnormalities (control group) and 96 ankles with varus osteoarthritis (varus-OA group), which were further stratified into a moderate-OA subgroup (50 ankles) and a severe-OA subgroup (46 ankles)...
April 22, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28432395/the-magnetic-resonance-imaging-appearance-of-the-anterolateral-ligament-of-the-knee-in-association-with-anterior-cruciate-rupture
#2
Jonathan D Kosy, Peter J Schranz, Anish Patel, Rahul Anaspure, Vipul I Mandalia
OBJECTIVE: The magnetic resonance imaging (MRI) appearance of the anterolateral ligament (ALL) has been described. However, the appearance of this structure and injury, in the presence of anterior cruciate ligament (ACL) injury, is less well defined. We studied the incidence of injury to the ALL and the pattern of this injury on MRI. MATERIALS AND METHODS: Following Institutional Review Board approval, a retrospective study of 375 consecutive MRI studies was performed...
April 21, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28429048/myxofibrosarcoma-first-report-of-myxofibrosarcoma-of-bone-arising-at-a-bone-infarct
#3
Dietrich Kayser, Zeke Walton, Evelyn Bruner, Russell W Chapin
Approximately 3300 new primary bone tumors will present to American physicians this year. This small but important group of malignancies has become more defined with developments in pathologic morphology, immunohistochemistry, and molecular studies. As tumor types are better partitioned, their specific characteristics are more readily observed. In this article we present the first reported case of a myxofibrosarcoma of bone developing within a bone infarct. With improved delineation of rarer tumor types, it is expected that additional cases of myxofibrosarcoma of bone will be recognized, potentially arising from a bone infarct...
April 21, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28429047/therapeutic-outcome-of-ct-guided-radiofrequency-ablation-in-patients-with-osteoid-osteoma
#4
Louis Lassalle, R Campagna, G Corcos, A Babinet, F Larousserie, J Stephanazzi, A Feydy
OBJECTIVE: To assess the long-term outcome of computed tomography-guided radiofrequency ablation (CT-guided RFA) in patients with suspected osteoid osteoma (OO). MATERIALS AND METHODS: Single-center retrospective study. Patients with clinical suspicion and imaging diagnosis of osteoid osteoma were treated by CT-guided RFA using the same device with either a 7- or 10-mm active tip electrode. Specific precautions were applied in case of articular or spinal OO. Patients were contacted by phone to evaluate the long-term outcome in terms of pain, ability to perform daily activities (including sports), and long-term complications...
April 20, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28424850/incidence-and-mri-characterization-of-the-spectrum-of-posterolateral-corner-injuries-occurring-in-association-with-acl-rupture
#5
Eduardo Frois Temponi, Lúcio Honório de Carvalho Júnior, Adnan Saithna, Mathieu Thaunat, Bertrand Sonnery-Cottet
OBJECTIVE: To determine the incidence and MRI characteristics of the spectrum of posterolateral corner (PLC) injuries occurring in association with anterior cruciate ligament (ACL) rupture. MATERIALS AND METHODS: We carried out a level IV, retrospective case series study. All patients clinically diagnosed with an ACL rupture between July 2015 and June 2016 who underwent MRI of the knee were included in the study. In addition to standard MRI knee reporting, emphasis was placed on identifying injury to the PLC and a description of involvement of these structures by two musculoskeletal radiologists...
April 20, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28424849/ultrasound-evaluation-of-the-ulnar-collateral-ligament-of-the-elbow-which-method-is-most-reproducible
#6
Mehool Shukla, Robert Keller, Nathan Marshall, Hafeez Ahmed, Courtney Scher, Vasilios Bill Moutzouros, Marnix van Holsbeeck
INTRODUCTION: The ulnar collateral ligament (UCL) is an important medial stabilizer of the elbow, particularly in overhead-throwing athletes. However, there is no universally accepted method for evaluating UCL thickness with ultrasound (US). OBJECTIVE: To assess reproducibility of previously published methods, as well as a modified technique, for evaluating the UCL via US. We hypothesize that a modified technique would show greater reproducibility. MATERIAL AND METHODS: Using US, the thickness of the UCL in 50 volunteers was measured by two musculoskeletal trained radiologists using two different measurement techniques...
April 20, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28421237/radiographic-interpretation-of-carpometacarpal-arthroplasty-correlation-between-radiographic-loosening-and-clinical-outcome
#7
Laurence Stillwater, Brett Memauri, Imran Ratanshi, Avinash Islur, Thelina Amaratunga
OBJECTIVE: To assess the radiographic appearance and interpretation of loosening in patients following first carpometacarpal joint pyrohemisphere arthroplasty. MATERIALS AND METHODS: A retrospective review over a 6-year period was performed identifying patients with first carpometacarpal pyrohemisphere implants. All postoperative radiographs were reviewed and compared with clinical information. Loosening was defined as greater than 1 mm of periprosthetic lucency or increasing lucency on serial studies...
April 19, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28411338/shoulder-bankart-lesion-with-posterior-instability-a-case-report-of-ultrasound-detection
#8
Ryuzo Arai, Taisuke Ito, Shuzo Okudaira, Shuichi Matsuda
Minor instability of the shoulder has recently drawn attention as a cause of shoulder pain in athletes. However, it is difficult to correctly diagnose the direction in which the humeral head translates and subluxates, and to clarify the pathology of the instability. We present a case of a 20-year-old male with an unstable shoulder who could not raise his left arm due to pain. Since 6 years prior to the onset of pain, the patient could asymptomatically perform voluntary subluxation, but it was slight and the direction of the subluxation could not be confirmed...
April 14, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28405725/the-posterolateral-approach-for-fluoroscopy-guided-tibiotalar-joint-injection
#9
Vanja Varenika, Jacob Harter, Edwin Chu, Lynne Steinbach
OBJECTIVE: To report a novel technique for tibiotalar joint injection that utilizes a posterolateral approach, including indications and technical considerations. METHODS: The posterolateral approach for tibiotalar injection is similar to that used in posterior subtalar joint injections. Using this technique, the tibiotalar joint space is accessed by directing the needle anterosuperiorly beneath the fibula until the posterior aspect of the talar dome has been reached...
April 12, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28401265/dynamic-contrast-enhanced-mr-imaging-in-osteoid-osteoma-relationships-with-clinical-and-ct-characteristics
#10
P Pottecher, E Sibileau, S Aho, B Hamze, C Parlier, J D Laredo, V Bousson
OBJECTIVE: To correlate dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) features to clinical and computed tomography (CT) morphological features of osteoid osteoma (OO). MATERIALS AND METHODS: Our institutional review board approved this retrospective study, waiving the need for informed consent. We included the 102 patients treated with interstitial laser ablation for histologically documented OO at our institution in 2008-2013. DCE-MRI variables were the time-enhancement pattern and rising slope (Sloperise) and CT variables were the bone and segment involved (OObone and OOsegment, respectively), OO location relative to the native cortex (OOcortex), nidus surface area, vessel sign, and largest neighboring-vessel diameter (Dmaxvessel)...
April 11, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28396962/elevated-%C3%AE-hcg-associated-with-aggressive-osteoblastoma
#11
Carol D Morris, Meera R Hameed, Narasimhan P Agaram, Sinchun Hwang
We present a unique case of an aggressive scapular osteoblastoma that produced β-hCG as a paraneoplastic manifestation in a 20-year-old woman. Serum β-hCG was found to be elevated during presurgical workup and consequently delayed surgical resection of the increasingly painful tumor because of suspected pregnancy. The paraneoplastic production of β-hCG was later proven by positive immunohistochemical stain of β-hCG in a curettage specimen and normalization of β-hCG levels after surgical resection of the aggressive osteoblastoma...
April 10, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28396961/old-and-new-evidence-concerning-the-crucial-role-of-ultrasound-in-guiding-intra-articular-injections
#12
LETTER
Domenico Albano, Vito Chianca, Sandro Tormenta, Alberto Migliore, Luca Maria Sconfienza
No abstract text is available yet for this article.
April 10, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28389822/erratum-to-periosteal-mesenchymal-chondrosarcoma-of-the-tibia-with-multifocal-bone-metastases-a-case-report
#13
Rajendra Kumar, Cihan Duran, Behrang Amini, Dejka M Araujo, Wei-Lien Wang
No abstract text is available yet for this article.
April 8, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28389821/variations-of-anatomy-on-mri-of-the-first-extensor-compartment-of-the-wrist-and-association-with-dequervain-tenosynovitis
#14
Connie Y Chang, Arvin B Kheterpal, Joao Rafael Terneria Vicentini, Ambrose J Huang
OBJECTIVE: To study anatomical variations on MRI of the first extensor compartment of the wrist in DeQuervain tenosynovitis (DQT). MATERIALS AND METHODS: A retrospective search for DQT patients yielded 47 subjects (51 ± 15 years, 36 female, 11 male). The age-matched control group (normal first extensor compartment) was 49 ± 15 years (29 female, 18 male). Two independent readers reviewed: the number of abductor pollicis longus (APL) tendon slips, tendon sheath septations (compartmentalization), and APL and EPB cross-sectional area (CSA) at the radial styloid...
April 7, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28389820/cortical-desmoid-of-the-humerus-radiographic-and-mri-correlation
#15
Matthew Kay, Peter Counsel, David Wood, William Breidahl
Cortical desmoids are self-limiting fibro-osseous lesions commonly occurring at the medial supracondylar femur in active adolescents, at either the origin of the medial head of the gastrocnemius or at the insertion of the adductor magnus aponeurosis. Less commonly, in a similar demographic, cortical desmoids may occur in the proximal humerus medially at the insertion of the pectoralis major muscle or laterally at the insertion of the deltoid. The radiographic appearance of the proximal humerus cortical desmoid has been described previously, but not the MRI appearance...
April 7, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28389819/giant-cell-tumor-of-bone-imaging-and-histology-changes-after-denosumab-treatment-comment-on-von-borstel-d-taguibao-ra-strle-na-burns-je-giant-cell-tumor-of-the-bone-aggressive-case-initially-treated-with-denosumab-and-intralesional-surgery-skeletal-radiol-2017
#16
LETTER
https://www.readbyqxmd.com/read/28386623/chronic-swelling-of-the-foot
#17
EDITORIAL
Dyan V Flores
No abstract text is available yet for this article.
April 6, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28382374/proximal-peroneus-longus-tear-rare-case-in-a-teenage-athlete-and-review-of-the-literature
#18
Matthew Winfeld, Nancy Chauvin
We present the case of a 15-year-old teenager who sustained an ankle inversion injury while playing American football, which yielded only minimal pain, but also foot numbness and a lateral leg bulge. Magnetic resonance imaging evaluation revealed a proximal peroneal tear. These rare injuries are often associated with compartment syndrome, a surgical emergency, which was ultimately excluded clinically in this patient. Relevant anatomy, mechanism of injury, and clinical manifestations are discussed.
April 5, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28378201/poor-reproducibility-of-compression-elastography-in-the-achilles-tendon-same-day-and-consecutive-day-measurements
#19
Catherine Payne, Nick Webborn, Peter Watt, Mara Cercignani
OBJECTIVE: To determine the reproducibility of compression elastography (CE) when measuring strain data, a measure of stiffness of the human Achilles tendon in vivo, over consecutive measures, consecutive days and when using different foot positions. MATERIALS AND METHODS: Eight participants (4 males, 4 females; mean age 25.5 ± 2.51 years, range 21-30 years; height 173.6 ± 11.7 cm, range 156-189 cm) had five consecutive CE measurements taken on one day and a further five CE measures taken, one per day, at the same time of day, every day for a consecutive 5-day period...
April 4, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28374052/stress-fractures-of-the-foot-and-ankle-part-1-biomechanics-of-bone-and-principles-of-imaging-and-treatment
#20
REVIEW
Jacob C Mandell, Bharti Khurana, Stacy E Smith
A stress fracture is a focal failure of bone induced by the summation of repetitive forces, which overwhelms the normal bone remodeling cycle. This review, the first of two parts, discusses the general principles of stress fractures of the foot and ankle. This includes bone structure, biomechanics of stress applied to bone, bone remodeling, risk factors for stress fracture, and general principles of imaging and treatment of stress fractures. Cortical bone and trabecular bone have a contrasting macrostructure, which leads to differing resistances to externally applied forces...
April 4, 2017: Skeletal Radiology
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