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Skeletal Radiology

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October 20, 2016: Skeletal Radiology
Michael McConnell, Rajendra Kumar, Behrang Amini, Patrick P Lin, Wei-Lien Wang
We present the case of an 83-year-old man who had painful swelling of right knee for 6 months. Radiographs showed a large intra-articular soft-tissue mass with small calcifications, whereas MRI detected a multilobulated intra-articular tumor with bone erosions at the distal femur. Histopathology of ultrasound-guided biopsy specimen of the synovial mass revealed it to be a poorly differentiated metastatic carcinoma. Abdominal computed tomography with intravenous contrast medium administration found a heterogeneously enhancing large right renal mass with calcifications, which was shown to be a renal cell carcinoma on histopathology...
October 20, 2016: Skeletal Radiology
Seyed Ali Hashemi, Javad Dehghani, Amir Reza Vosoughi
OBJECTIVE: Diagnosis of acetabular retroversion based on crossover sign in the anteroposterior radiograph of the hip joint is well described. Accuracy of the crossover sign to identify global retroversion of the acetabulum in comparison to version of the acetabulum in reconstructed three-dimensional computed tomography (3D CT) scan of the hip was the aim of this study. MATERIALS AND METHODS: X-rays of 500 hips were assessed regarding presence of crossover sign and its location in the upper, middle, or lower third of the acetabulum...
October 18, 2016: Skeletal Radiology
Faysal F Altahawi, Kevin J Blount, Nicholas P Morley, Esther Raithel, Imran M Omar
PURPOSE: To compare a faster, new, high-resolution accelerated 3D-fast-spin-echo (3D-FSE) acquisition sequence (CS-SPACE) to traditional 2D and high-resolution 3D sequences for knee 3-T magnetic resonance imaging (MRI). MATERIALS AND METHODS: Twenty patients received knee MRIs that included routine 2D (T1, PD ± FS, T2-FS; 0.5 × 0.5 × 3 mm(3); ∼10 min), traditional 3D FSE (SPACE-PD-FS; 0.5 × 0.5 × 0.5 mm(3); ∼7.5 min), and accelerated 3D-FSE prototype (CS-SPACE-PD-FS; 0...
October 15, 2016: Skeletal Radiology
Connie Y Chang, Susan V Kattapuram, Ambrose J Huang, F Joseph Simeone, Martin Torriani, Miriam A Bredella
OBJECTIVES: To determine the efficacy and safety of percutaneous calcitonin and steroid injection in the treatment of aneurysmal bone cysts (ABCs). MATERIALS AND METHODS: Our study was IRB-approved and HIPAA-compliant. We reviewed pre- and post-procedural imaging studies and medical records of all CT-guided percutaneous injections of ABCs with calcitonin and steroid performed at our institution between 2003 and 2015. RESULTS: Treatment success based on imaging was categorized as substantial (51-100 %), partial (1-50 %), or none (0 %) by comparing radiographs of the lesion before and after treatment...
October 14, 2016: Skeletal Radiology
Brady K Huang, Eric Y Chang
OBJECTIVE: To describe infraspinatus tendon injuries with associated intramuscular edema in light of more recently elucidated anatomical knowledge. MATERIAL AND METHODS: A retrospective review was performed to identify MRI cases with infraspinatus tendon injury accompanied by muscle edema. MR images were reviewed to evaluate the location of the injury, to assess the degree of tendon retraction, and to assess for muscular changes. Clinical and surgical data were reviewed when available...
October 14, 2016: Skeletal Radiology
Timothy Dickson, George Koulouris
No abstract text is available yet for this article.
October 14, 2016: Skeletal Radiology
Ruken Yuksekkaya Celıkyay, Fatih Celikyay, Erkal Bilgic, Murat Ascı, Dogan Koseoglu
Dysplasia epiphysealis hemimelica (DEH) is a rare developmental disorder characterized by osteocartilaginous overgrowth in one or more epiphyses. The disease usually involves a single limb or is hemimelic (lateral or medial compartment), and lower extremities are more frequently affected than upper extremities. Here we present clinical and radiological findings for a male DEH patient at 1.5 and 3.5 years of age. The radiographs obtained at first presentation showed minimal osseous overgrowth and irregularity at the epiphyses around the left knee and ankle joints, respectively...
October 14, 2016: Skeletal Radiology
Adam C Johnson, John H Hollman, Benjamin M Howe, Jonathan T Finnoff
OBJECTIVE: The primary aim of this study was to determine if ischiofemoral space (IFS) dimensions vary with changes in hip flexion as a result of placing a bolster behind the knees during magnetic resonance imaging (MRI). A secondary aim was to determine if IFS dimensions vary between supine and prone hip neutral positions. DESIGN: The study employed a prospective design. SETTING: Sports medicine center within a tertiary care institution. PARTICIPANTS: Five male and five female adult subjects (age mean = 29...
October 14, 2016: Skeletal Radiology
Gavin A McKenzie, Stephen M Broski, Benjamin M Howe, Robert J Spinner, Kimberly K Amrami, Angela Dispenzieri, Michael D Ringler
OBJECTIVE: To highlight the MRI characteristics of pathologically proven amyloidosis involving the peripheral nervous system (PNS) and determine the utility of MRI in directing targeted biopsy for aiding diagnosis. MATERIALS AND METHODS: A retrospective study was performed for patients with pathologically proven PNS amyloidosis who also underwent MRI of the biopsied or excised nerve. MRI signal characteristics, nerve morphology, associated muscular denervation changes, and the presence of multifocal involvement were detailed...
October 12, 2016: Skeletal Radiology
Marcela De La Hoz Polo, Monica Khanna, Miny Walker
No abstract text is available yet for this article.
October 11, 2016: Skeletal Radiology
Benjamin Wang, Florian J Fintelmann, Ravi S Kamath, Susan V Kattapuram, Daniel I Rosenthal
OBJECTIVE: The objective of this study is to determine how a limited protocol MR examination compares to a full conventional MR examination for the detection of non-degenerative pathology such as acute fracture, infection, and malignancy. MATERIALS AND METHODS: A sample of 349 non-contrast MR exams was selected retrospectively containing a 3:1:1:1 distribution of negative/degenerative change only, acute fracture, infection, and malignancy. This resulted in an even distribution of pathology and non-pathology...
October 10, 2016: Skeletal Radiology
Yutaka Mifune, Atsuyuki Inui, Ryosuke Sakata, Yoshifumi Harada, Fumiaki Takase, Masahiro Kurosaka, Takeshi Kokubu
OBJECTIVE: No studies have reported the use of ultrasound for the evaluation of trigger finger after steroid injection. We evaluated the clinical features and ultrasound appearance of trigger finger before and after steroid injection under ultrasound guidance. MATERIALS AND METHODS: Thirty-eight digits with triggering were included. A single steroid injection into the tendon sheath was administered. Ultrasound findings and clinical symptoms, including pain, triggering, and the Quinnell score, were analyzed before injection and at 1 and 3 weeks after injection...
October 8, 2016: Skeletal Radiology
Edward H Wang, William K Loftus, Stephen J Bird, Matthew J Sampson
Lumbrical strain is a relatively unknown hand injury. We report four cases of lumbrical origin strain involving the ring finger flexor tendons. Three patients sustained the injury during rock climbing and one while working with a jackhammer. In all cases, circumferential fluid around the flexor tendons of the ring finger was demonstrated on MRI and/or ultrasound at the distal palmar level at the "bare area," which is normally devoid of a synovial sheath. There is a paucity of information in the literature regarding this injury and its specific imaging features...
October 7, 2016: Skeletal Radiology
Yaxia Zhang, Michael Joyce, Jean Schils, Thomas W Bauer
Sarcoidosis is a systemic inflammatory disorder characterized by non-caseating granulomas, predominantly involving lung, mediastinal lymph nodes and other organs. Synovium involvement is infrequent, and as far as we know, involvement of a periprosthetic membrane has not been reported in the English literature. Intra-articular diffuse tenosynovial giant cell tumor ("conventional diffuse pigmented villonodular synovitis") is an uncommon, locally aggressive neoplasm with few previous case reports in which it arose in periprosthetic tissues after knee arthroplasty...
October 7, 2016: Skeletal Radiology
Ro Woon Lee, Soo-Jung Choi, Man Ho Lee, Jae Hong Ahn, Dong Rock Shin, Chae Hoon Kang, Ki Won Lee
OBJECTIVE: To evaluate the diagnostic performance (DP) of 3T (3 Tesla field strength) conventional shoulder magnetic resonance imaging (MRI) in detecting the long head of the biceps tendon (LHBT) tears in association with rotator cuff tendon tears. MATERIALS AND METHODS: This study included 80 consecutive patients who underwent arthroscopic surgery for rotator cuff tendon tears. Two radiologists independently evaluated the preoperative 3T shoulder MRI for the presence of LHBT tears...
October 7, 2016: Skeletal Radiology
Hugue A Ouellette, Peter L Munk
No abstract text is available yet for this article.
October 7, 2016: Skeletal Radiology
Hiroshi Hatano, Naoki Oike, Takashi Ariizumi, Taro Sasaki, Hiroyuki Kawashima
Intravertebral cleft (IVC) is a common finding in osteoporotic compression fracture. However, since the vertebral collapse attributable to cancer metastasis is rarely associated with IVC, the phenomenon is generally considered as a sign of a benign lesion. In this study, we retrospectively reviewed the radiographs, computed tomography scans, and magnetic resonance images of 111 patients with spinal metastasis. Three cases (2.7 %) had IVC in the collapsed thoracic vertebral bodies (T7, T8, and T11) attributable to cancer metastasis...
October 6, 2016: Skeletal Radiology
Thumanoon Ruangchaijatuporn, Eric Y Chang, Christine B Chung
A 56-year-old man presented with a painless prepatellar mass of the left knee. MR images demonstrated a large, well-defined mass with heterogeneous intermediate signal intensity on T1- and proton density-weighted images. Mild, heterogeneous enhancement was noted after the intravenous administration of gadolinium. Diagnostic imaging included atypical soft-tissue infection, fibrogranulomatous reaction, gouty tophus, rheumatoid nodule and xanthoma or possibly malignancy. The histopathological examination revealed sarcoidosis involving the prepatellar bursa...
October 6, 2016: Skeletal Radiology
Robert Lopez-Ben, James Coumas
No abstract text is available yet for this article.
October 4, 2016: Skeletal Radiology
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