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https://www.readbyqxmd.com/read/29784596/tenodesis-renders-better-results-than-tenotomy-in-repairs-of-isolated-supraspinatus-tears-with-pathologic-biceps
#1
Arnaud Godenèche, Jean-François Kempf, Laurent Nové-Josserand, Aude Michelet, Mo Saffarini, Gerjon Hannink, Philippe Collin
BACKGROUND: Many authors recommend systematic biceps tenotomy or tenodesis when repairing rotator cuff tears, regardless of whether the biceps is normal or pathologic. The purpose of this study was to determine whether 10-year outcomes of repairs of isolated supraspinatus tears are influenced by adjuvant biceps tenodesis or tenotomy. METHODS: Patients who underwent repair of isolated supraspinatus tears were recalled for evaluation at a minimum follow-up of 10 years...
May 18, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29782307/cutaneous-manifestations-of-tuberous-sclerosis
#2
Mirjana Bakić, Marina Ratković, Branka Gledović, Balsa Vujović, Danilo Radunović, Vera Babić, Vladimir Prelević
Dear Editor, Tuberous sclerosis (TS) is an autosomal dominant multisystem disease, which occurs due to genetically determined hyperplasia of ectodermal and mesodermal cells. Clinical manifestations present on the skin and in the nervous system, kidneys, heart, and other organs. Recent studies estimate the incidence of TS at 1/6000 to 1/10,000 live births, and a prevalence in the general population of approximately 1 in 20,000 (1). There are two different genetic loci responsible for TS: 9q34 (TSC1-hamartin) and 16p13...
April 2018: Acta Dermatovenerologica Croatica: ADC
https://www.readbyqxmd.com/read/29778592/comparative-analysis-of-2-glenoid-version-measurement-methods-in-variable-axial-slices-on-3-dimensionally-reconstructed-computed-tomography-scans
#3
Gregory Cunningham, John Freebody, Margaret M Smith, Mohy E Taha, Allan A Young, Benjamin Cass, Bruno Giuffre
BACKGROUND: Most glenoid version measurement methods have been validated on 3-dimensionally corrected axial computed tomography (CT) slices at the mid glenoid. Variability of the vault according to slice height and angulation has not yet been studied and is crucial for proper surgical implant positioning. The aim of this study was to analyze the variation of the glenoid vault compared with the Friedman angle according to different CT slice heights and angulations. The hypothesis was that the Friedman angle would show less variability...
May 16, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29777344/arthroscopic-debridement-for-septic-arthritis-of-the-shoulder-joint-post-infectious-arthritis-is-an-inevitable-consequence
#4
Sung-Jae Kim, Yun-Rak Choi, Wonyong Lee, Woo-Seok Jung, Yong-Min Chun
PURPOSE: The purpose of this study was to compare clinical outcomes and development of post-infectious arthritis of the shoulder joint after single (Group S) or repeated (Group R) arthroscopic debridement surgeries. We hypothesized that (1) repeated surgeries might be attributable to initial subchondral involvement resulting from septic arthritis and (2) the repeated surgery group would exhibit a higher incidence of post-infectious arthritic changes and inferior clinical outcomes due to prolonged resolution of the infection...
May 18, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29774200/thickening-ligamentum-flavum-mimicking-tumor-in-the-epidural-space-of-the-cervical-spine
#5
Sung Hyun Bae, Dong Wuk Son, O Ik Kwon, Su Hun Lee, Jun Seok Lee, Geun Sung Song
In patients with tumors and spinal cord lesions, inflammation and tissue infection can result in mass effect detection on imaging. As a result, surgical biopsy procedures are often performed on the lesions. We report a rare case in which the thickening ligamentum flavum (LF) appeared to be a tumor in the epidural space of the cervical spine based on imaging findings. A 52-year-old man visited our outpatient clinic with severe shoulder pain and radicular pain in his right arm that had developed gradually after a traffic accident two months earlier...
April 2018: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/29772993/shoulder-lesion-in-a-69-year-old-woman
#6
Andrew J Hayden, Srinivas Kolla, Adele L Boskey, Steven Burekhovich, Chuanyong Lu, Michael Stracher, Aditya V Maheshwari
Milwaukee Shoulder Syndrome (MSS) is a painful progressive arthropathy in which hydroxyapatite crystal deposition in synovial tissue induces lysosomal release of collagenase and neutral proteases. These enzymes are destructive to periarticular tissue, including the synovium, articular cartilage, rotator cuff muscles, and the intrasynovial cortical bone. MSS predominantly occurring in women (90%) over the age of 70 years of age with a clinical history marked by recurrent joint effusions and pain, which classically worsens at night...
2018: Journal of Long-term Effects of Medical Implants
https://www.readbyqxmd.com/read/29772869/-progression-on-finite-element-modeling-method-in-scoliosis
#7
REVIEW
Ning Fan, Lei Zang, Yong Hai, Peng Du, Shuo Yuan
Scoliosis is a complex spinal three-dimensional malformation with complicated pathogenesis, often associated with complications as thoracic deformity and shoulder imbalance. Because the acquisition of specimen or animal models are difficult, the biomechanical study of scoliosis is limited. In recent years, along with the development of the computer technology, software and image, the technology of establishing a finite element model of human spine is maturing and it has been providing strong support for the research of pathogenesis of scoliosis, the design and application of brace, and the selection of surgical methods...
April 25, 2018: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29771483/managing-shoulder-injuries-in-the-emergency-department-fracture-dislocation-and-overuse
#8
Richard Pescatore, Andrew Nyce
The complex structures of the shoulder can be injured by fracture, dislocation, and overuse, and correctly identifying and classifying injury is essential to avoiding pain, disability, and life- and limb-threatening complications. This issue presents a systematic approach to classifying shoulder injuries based on the mechanism of injury and clinical presentation, choosing appropriate imaging, and determining the best strategies for treatment, including reduction, surgical consultation, or outpatient referral...
June 2018: Emergency Medicine Practice
https://www.readbyqxmd.com/read/29770850/ultrasound-measurements-of-axillary-recess-capsule-thickness-in-unilateral-frozen-shoulder-study-of-correlation-with-mri-measurements
#9
Du Hwan Kim, Chul-Hyun Cho, Duk Hyun Sung
OBJECTIVE: The aims of this study were to compare the ultrasound thickness of the affected axillary recess capsule (ARC) with that of the unaffected ARC in patients with frozen shoulder (FS), to analyze whether the ultrasound measurements of the ARC thickness correlate with those obtained using MRI, and to assess whether the ultrasound thickness of the ARC correlates with the patterns of range of motion limitation. MATERIALS AND METHODS: Forty-four patients with clinically diagnosed unilateral FS and MRI evaluation performed ultrasound measurement of ARC...
May 16, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29761537/scapular-upward-rotator-morphologic-characteristics-in-individuals-with-and-without-forward-head-posture-a-case-control-study
#10
Fariba Khosravi, Anneli Peolsson, Noureddin Karimi, Leila Rahnama
OBJECTIVES: There are several reports suggesting that forward head posture contributes to alterations in scapular kinematics and muscle activity, leading to the development of shoulder problems. Currently, it is unknown whether forward head posture alters the thickness of the scapular muscles. The aim of this study was to compare the thickness of the serratus anterior and upper and lower trapezius muscles at rest and during loaded isometric contractions in individuals with and without forward head posture...
May 15, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29760842/appropriateness-of-extremity-magnetic-resonance-imaging-examinations-in-an-academic-emergency-department-observation-unit
#11
McKinley Glover, Ravi V Gottumukkala, Yadiel Sanchez, Brian J Yun, Theodore I Benzer, Benjamin A White, Anand M Prabhakar, Ali S Raja
Introduction: Emergency departments (ED) and hospitals face increasing challenges related to capacity, throughput, and stewardship of limited resources while maintaining high quality. Appropriate utilization of extremity magnetic resonance imaging (MRI) examinations within the emergency setting is not well known. Therefore, this study aimed to determine indications for and appropriateness of MRI of the extremities for musculoskeletal conditions in the ED observation unit (EDOU). Methods: We conducted this institutional review board-approved, retrospective study in a large, quaternary care academic center and Level I trauma center...
May 2018: Western Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29759906/determining-glenoid-component-version-after-total-shoulder-arthroplasty
#12
Manish P Mehta, Laura A Vogel, Brian B Shiu, Elizabeth R Dennis, Djuro Petkovic, William N Levine, Charles M Jobin
BACKGROUND: Glenoid component loosening after total shoulder arthroplasty (TSA) may occur if retroversion is not corrected to <10°. However, accurately measuring postoperative glenoid component version has been difficult without postoperative computed tomography (CT), adding cost and radiation exposure outside of the standard radiographic follow-up. We present a new method to assess glenoid component version after TSA using only routine preoperative CT and postoperative radiographs (x-rays)...
May 11, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29757693/a-rotator-cuff-tear-concomitant-with-shoulder-stiffness-is-associated-with-a-lower-retear-rate-after-1-stage-arthroscopic-surgery
#13
In-Bo Kim, Dong-Wook Jung
BACKGROUND: Few studies have reported on the radiological characteristics and repair integrity of coexistent rotator cuff tears (RCTs) and shoulder stiffness after simultaneous arthroscopic rotator cuff repair and capsular release. PURPOSE: To evaluate the radiological characteristics and repair integrity of 1-stage arthroscopic surgery of RCTs concomitant with shoulder stiffness. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Among patients who underwent arthroscopic repair of full-thickness RCTs, the stiff group underwent simultaneous capsular release for shoulder stiffness, and the nonstiff group had no stiffness...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29755848/ct-dose-modulation-using-automatic-exposure-control-in-whole-body-pet-ct-effects-of-scout-imaging-direction-and-arm-positioning
#14
Yusuke Inoue, Kazunori Nagahara, Hiroko Kudo, Hiroyasu Itoh
Automatic exposure control (AEC) modulates tube current and consequently X-ray exposure in CT. We investigated the behavior of AEC systems in whole-body PET/CT. CT images of a whole-body phantom were acquired using AEC on two scanners from different manufactures. The effects of scout imaging direction and arm positioning on dose modulation were evaluated. Image noise was assessed in the chest and upper abdomen. On one scanner, AEC using two scout images in the posteroanterior (PA) and lateral (Lat) directions provided relatively constant image noise along the z-axis with the arms at the sides...
2018: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29754845/do-magnetic-resonance-imaging-and-computed-tomography-provide-equivalent-measures-of-rotator-cuff-muscle-size-in-glenohumeral-osteoarthritis
#15
Peter N Chalmers, Lindsay Beck, Irene Stertz, Alexander Aleem, Jay D Keener, Heath B Henninger, Robert Z Tashjian
BACKGROUND: Rotator cuff muscle volume is associated with outcomes after cuff repair and total shoulder arthroplasty. Muscle area on select magnetic resonance imaging (MRI) slices has been shown to be a surrogate for muscle volume. The purpose of this study was to determine whether computed tomography (CT) provides an equivalent measurement of cuff muscle area to a previously validated MRI measurement. METHODS: We included 30 patients before they were undergoing total shoulder arthroplasty with both preoperative CT and MRI scans performed within 30 days of one another at 1 institution using a consistent protocol...
May 10, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29749974/design-of-sparse-halbach-magnet-arrays-for-portable-mri-using-a-genetic-algorithm
#16
Clarissa Zimmerman Cooley, Melissa W Haskell, Stephen F Cauley, Charlotte Sappo, Cristen D Lapierre, Christopher G Ha, Jason P Stockmann, Lawrence L Wald
Permanent magnet arrays offer several attributes attractive for the development of a low-cost portable MRI scanner for brain imaging. They offer the potential for a relatively lightweight, low to mid-field system with no cryogenics, a small fringe field, and no electrical power requirements or heat dissipation needs. The cylindrical Halbach array, however, requires external shimming or mechanical adjustments to produce B0 fields with standard MRI homogeneity levels (e.g., 0.1 ppm over FOV), particularly when constrained or truncated geometries are needed, such as a head-only magnet where the magnet length is constrained by the shoulders...
January 2018: IEEE Transactions on Magnetics
https://www.readbyqxmd.com/read/29749048/evaluation-of-projection-and-dual-energy-based-methods-for-metal-artifact-reduction-in-ct-using-a-phantom-study
#17
Zaiyang Long, Michael R Bruesewitz, David R DeLone, Jonathan M Morris, Kimberly K Amrami, Mark C Adkins, Katrina N Glazebrook, James M Kofler, Shuai Leng, Cynthia H McCollough, Joel G Fletcher, Ahmed F Halaweish, Lifeng Yu
OBJECTIVES: Both projection and dual-energy (DE)-based methods have been used for metal artifact reduction (MAR) in CT. The two methods can also be combined. The purpose of this work was to evaluate these three MAR methods using phantom experiments for five types of metal implants. MATERIALS AND METHODS: Five phantoms representing spine, dental, hip, shoulder, and knee were constructed with metal implants. These phantoms were scanned using both single-energy (SE) and DE protocols with matched radiation output...
May 10, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29738991/digital-tracking-algorithm-reveals-the-influence-of-structural-irregularities-on-joint-movements-in-the-human-cervical-spine
#18
Christian Balkovec, Jim Veldhuis, John W Baird, G Wayne Brodland, Stuart M McGill
BACKGROUND: Disc height loss and osteophytes change the local mechanical environment in the spine; while previous research has examined kinematic dysfunction under degenerative change, none has looked at the influence of disc height loss and osteophytes throughout movement. METHODS: Twenty patients with pain related to the head, neck or shoulders were imaged via videofluoroscopy as they underwent sagittal-plane flexion and extension. A clinician graded disc height loss and osteophytes as "severe/moderate", "mild", or "none"...
April 26, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29738101/evaluation-of-the-diagnostic-accuracy-of-skeletal-scintigraphy-in-lame-and-poorly-performing-sports-horses
#19
Laura E Quiney, Joanne L Ireland, Sue J Dyson
Skeletal scintigraphy is an established imaging modality, however, its validity as a diagnostic test in lame or poorly performing sports horses has not been determined. The objective of this retrospective cross-sectional analytical study was to determine the accuracy of skeletal scintigraphy as an indiscriminate screening test in sports horses. All sports horses that underwent scintigraphic examination between March 2008 and December 2014 for which a definitive diagnosis was reached were included. Examinations were evaluated blindly...
May 8, 2018: Veterinary Radiology & Ultrasound
https://www.readbyqxmd.com/read/29731397/long-term-clinical-and-radiographic-outcome-of-rotator-cuff-repair-with-a-synthetic-interposition-graft-a-consecutive-case-series-with-17-to-20-years-of-follow-up
#20
Mats C Ranebo, Hanna C Björnsson Hallgren, Rolf Norlin, Lars E Adolfsson
BACKGROUND: Treatment options for irreparable cuff tears include synthetic interposition grafts, but whether such grafts can maintain acceptable shoulder function and prevent cuff tear arthropathy in the long-term is unknown. METHOD: This was a retrospective case series of 13 consecutive patients treated with a synthetic interposition graft made of Dacron (DuPont, Wilmington, DE, USA). Patients were examined with bilateral ultrasonography, bilateral x-ray imaging, Constant-Murley score, and Western Ontario Rotator Cuff score...
May 3, 2018: Journal of Shoulder and Elbow Surgery
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