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https://www.readbyqxmd.com/read/29908356/total-hip-arthroplasty-after-failed-fixation-of-a-proximal-femur-fracture-analysis-of-59-cases-of-intra-and-extra-capsular-fractures
#1
Antoine Morice, Florian Ducellier, Pascal Bizot
INTRODUCTION: The indications for total hip arthroplasty (THA) after failed internal fixation of a proximal femur fracture vary. Published studies on this topic are broad-ranging and do not distinguish between intracapsular and extracapsular fractures. This led us to conduct a retrospective analysis comparing the clinical outcomes, radiological outcomes, technical problems and complications between these two types of fractures. HYPOTHESIS: The functional outcomes of THA after an extracapsular fracture will be worse than the ones after an intracapsular fracture...
June 13, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29896012/femoral-press-fit-fixation-versus-interference-screw-fixation-in-anterior-cruciate-ligament-reconstruction-with-bone-patellar-tendon-bone-autograft-20-year-follow-up
#2
A Biazzo, A Manzotti, K Motavalli, N Confalonieri
Introduction: The aim of this paper is to present our experience with femoral press-fit fixation in anterior cruciate ligament reconstruction using bone-patellar tendon-bone autograft. Methods: The patient population was randomly placed in two groups: group A (58 patients), who underwent femoral screw fixation; group B (62 patients), who underwent femoral press-fit fixation. Results: At last follow-up 9.2% of patients were lost; 28% of patients in group A and 64% of patients in group B had excellent International Knee Documentation Committee score (grade A); 66% of patients in group A and 32% of patients in group B had good International Knee Documentation Committee scores (grade B)...
April 2018: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/29893992/removal-of-hyperpolarized-129-xe-gas-phase-contamination-in-spectroscopic-imaging-of-the-lungs
#3
Andrew D Hahn, Jeff Kammerman, Sean B Fain
PURPOSE: A novel technique is presented for retrospective estimation and removal of gas-phase hyperpolarized Xenon-129 (HP 129 Xe) from images of HP 129 Xe dissolved in the barrier (comprised of parenchymal lung tissue and blood plasma) and red blood cell (RBC) phases. The primary aim is mitigating RF pulse performance limitations on measures of gas exchange (e.g., barrier-gas and RBC-gas ratios). Correction for gas contamination would simplify technical dissemination of HP 129 Xe applications across sites with varying hardware performance, scanner vendors, and models...
June 12, 2018: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29893620/femoral-osteomyelitis-caused-by-cladophialophora-in-a-patient-without-known-immunocompromise
#4
Nirbhay S Jain, Christopher B Horn, Adrian A Coleoglou Centeno, Obeid N Ilahi, John E Mazuski, Grant V Bocchichio, Laurie J Punch
BACKGROUND: Chronic osteomyelitis associated with a stage IV decubitus ulcer is a challenging condition to manage, characterized by frequent relapses and need for long-term anti-microbial therapy. Although gram-positive cocci are the most common causes, fungal infections have been reported, usually in immunocompromised hosts. We present a case of Cladophialophora osteomyelitis in a patient without known immunocompromised that was managed with a Girdlestone pseudoarthroplasty. CASE REPORT: A 70-year-old male presented to our emergency room with fever, right hip pain, and purulent drainage from a right greater trochanter stage IV decubitus ulcer...
June 12, 2018: Surgical Infections
https://www.readbyqxmd.com/read/29890541/percutaneous-instrumentation-of-a-complex-lumbar-spine-fracture-with-bilateral-pedicle-dissociation-case-report-and-technical-note
#5
Evan Luther, Timur Urakov, Steven Vanni
BACKGROUND AND STUDY OBJECTIVE:  Complex traumatic lumbar spine fractures are difficult to manage and typically occur in younger patients. Surgical immobilization for unstable fractures is an accepted treatment but can lead to future adjacent-level disease. Furthermore, large variations in fracture morphology create significant difficulties when attempting fixation. Therefore, a surgical approach that considers both long-term outcomes and fracture type is of utmost importance. We present a novel technique for percutaneous fixation without interbody or posterolateral fusion in a young patient with bilateral pedicle dissociations and an acute-onset incomplete neurologic deficit...
June 11, 2018: Journal of Neurological Surgery. Part A, Central European Neurosurgery
https://www.readbyqxmd.com/read/29890458/local-muscle-flaps-minimize-post-operative-wound-morbidity-in-patients-with-neoplastic-disease-of-the-spine
#6
Philipp Franck, Jaime L Bernstein, Leslie E Cohen, Roger Härtl, Ali A Baaj, Jason A Spector
OBJECTIVES: Patients with neoplastic disease involving the spine either from primary or metastatic disease present a unique challenge given these patients' frequent poor nutritional status at the time of surgery, the delivery of early post-operative chemotherapy or radiation, and placement of large amounts of hardware and avascular bone graft into a wound bed that is atrophic, previously operated or irradiated. As a result, wound morbidity has traditionally been high in this cohort of patients...
May 29, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29887668/a-data-colocation-grid-framework-for-big-data-medical-image-processing-backend-design
#7
Shunxing Bao, Yuankai Huo, Prasanna Parvathaneni, Andrew J Plassard, Camilo Bermudez, Yuang Yao, Ilwoo Lyu, Aniruddha Gokhale, Bennett A Landman
When processing large medical imaging studies, adopting high performance grid computing resources rapidly becomes important. We recently presented a "medical image processing-as-a-service" grid framework that offers promise in utilizing the Apache Hadoop ecosystem and HBase for data colocation by moving computation close to medical image storage. However, the framework has not yet proven to be easy to use in a heterogeneous hardware environment. Furthermore, the system has not yet validated when considering variety of multi-level analysis in medical imaging...
March 2018: Proceedings of SPIE
https://www.readbyqxmd.com/read/29881179/percutaneous-pinning-versus-volar-locking-plate-fixation-for-dorsally-displaced-distal-radius-fractures-reoperation-rates-over-an-eight-year-period
#8
Quintin Liao, Nathan C Skipper, Michael J Brown, Paul J Jenkins
Purpose: To compare reoperation rates between closed reduction with percutaneous pinning (CRPP) and internal fixation with a volar locking plate (VLP) for the treatment of distal radius fractures. Methods: A retrospective review of all patients with dorsally displaced distal radius fractures presenting to a hospital over an eight-year period. Results: 1364 procedures were reviewed after applying the exclusion criteria; 663 underwent CRPP and 701 underwent VLP...
June 2018: Journal of Orthopaedics
https://www.readbyqxmd.com/read/29871488/imaging-peptide-and-protein-chirality-via-amino-acid-analysis-by-chiral-%C3%A3-chiral-two-dimensional-correlation-liquid-chromatography
#9
Ulrich Woiwode, Roland Johann Reischl, Stephan Buckenmaier, Wolfgang Lindner, Michael Lämmerhofer
The present contribution illustrates the utilization of a chiral × chiral two dimensional liquid chromatography (2DLC) setup with tert-butylcarbamoyl quinine chiral stationary phase (CSP) in the first dimension (1D) and tert-butylcarbamoyl quinidine CSP in the second dimension (2D) to analyze FMOC-derivatized D and L amino acids from peptide hydrolysates. Hereby, in the 1D and 2D chiral separation dimensions factors such as selector and immobilization chemistry of the CSPs, mobile phase, temperature, column hardware dimensions, stationary phase supports, particle type and packing were identical...
June 6, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29864860/vector-network-analyzer-ferromagnetic-resonance-spectrometer-with-field-differential-detection
#10
S Tamaru, S Tsunegi, H Kubota, S Yuasa
This work presents a vector network analyzer ferromagnetic resonance (VNA-FMR) spectrometer with field differential detection. This technique differentiates the S-parameter by applying a small binary modulation field in addition to the DC bias field to the sample. By setting the modulation frequency sufficiently high, slow sensitivity fluctuations of the VNA, i.e., low-frequency components of the trace noise, which limit the signal-to-noise ratio of the conventional VNA-FMR spectrometer, can be effectively removed, resulting in a very clean FMR signal...
May 2018: Review of Scientific Instruments
https://www.readbyqxmd.com/read/29858655/implant-preloading-in-extension-reduces-spring-length-change-in-dynamic-intraligamentary-stabilization-a-biomechanical-study-on-passive-kinematics-of-the-knee
#11
Janosch Häberli, Benjamin Voumard, Clemens Kösters, Daniel Delfosse, Philipp Henle, Stefan Eggli, Philippe Zysset
PURPOSE: Dynamic intraligamentary stabilization (DIS) is a primary repair technique for acute anterior cruciate ligament (ACL) tears. For internal bracing of the sutured ACL, a metal spring with 8 mm maximum length change is preloaded with 60-80 N and fixed to a high-strength polyethylene braid. The bulky tibial hardware results in bone loss and may cause local discomfort with the necessity of hardware removal. The technique has been previously investigated biomechanically; however, the amount of spring shortening during movement of the knee joint is unknown...
June 1, 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/29845371/-syndesmosis-injuries-at-the-ankle
#12
REVIEW
S Rammelt, E Manke
BACKGROUND: Injuries to the distal tibiofibular syndesmosis are frequent and continue to generate controversy due to an extensive range of diagnostic techniques and therapeutic options. OBJECTIVE: The aim of this review is to summarize the current knowledge on syndesmotic instability and to present some recommendations for the clinical practice for acute an chronic injuries. MATERIAL AND METHODS: Analysis of the current literature concerning the anatomy, etiology, diagnostics and treatment of syndesmosis injuries...
May 29, 2018: Der Unfallchirurg
https://www.readbyqxmd.com/read/29812959/reoperation-rate-differences-between-open-reduction-internal-fixation-and-primary-arthrodesis-of-lisfranc-injuries
#13
Matteo Buda, Shaun Kink, Ruben Stavenuiter, Catharina Noortje Hagemeijer, Bonnie Chien, Ali Hosseini, Anne Holly Johnson, Daniel Guss, Walter Christopher DiGiovanni
BACKGROUND: Controversy persists as to whether Lisfranc injuries are best treated with open reduction internal fixation (ORIF) versus primary arthrodesis (PA). Reoperation rates certainly influence this debate, but prior studies are often confounded by inclusion of hardware removal as a complication rather than as a planned, staged procedure inherent to ORIF. The primary aim of this study was to evaluate whether reoperation rates, excluding planned hardware removal, differ between ORIF and PA...
May 1, 2018: Foot & Ankle International
https://www.readbyqxmd.com/read/29807263/pre-disinfection-columns-to-improve-the-performance-of-the-direct-electro-disinfection-of-highly-faecal-polluted-surface-water
#14
J Isidro, J Llanos, C Sáez, J Lobato, P Cañizares, M A Rodrigo
This work presents the design and evaluation of a new concept of pre-disinfection treatment that is especially suited for highly polluted surface water and is based on the combination of coagulation-flocculation, lamellar sedimentation and filtration into a single-column unit, in which the interconnection between treatments is an important part of the overall process. The new system, the so-called PREDICO (PRE-DIsinfection Column) system, was built with low-cost consumables from hardware stores (in order to promote in-house construction of the system in poor countries) and was tested with a mixture of 20% raw wastewater and 80% surface water (in order to simulate an extremely bad situation)...
May 25, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29789564/establishing-quasi-steady-state-operations-of-microphysiological-systems-mps-using-tissue-specific-metabolic-dependencies
#15
Christian Maass, Matthew Dallas, Matthew E LaBarge, Michael Shockley, Jorge Valdez, Emily Geishecker, Cynthia L Stokes, Linda G Griffith, Murat Cirit
Microphysiological systems (MPS), consisting of tissue constructs, biomaterials, and culture media, aim to recapitulate relevant organ functions in vitro. MPS components are housed in fluidic hardware with operational protocols, such as periodic complete media replacement. Such batch-like operations provide relevant nutrients and remove waste products but also reset cell-secreted mediators (e.g. cytokines, hormones) and potentially limit exposure to drugs (and metabolites). While each component plays an essential role for tissue functionality, MPS-specific nutrient needs are not yet well-characterized nor utilized to operate MPSs at more physiologically-relevant conditions...
May 22, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29785313/management-of-an-infected-nonunion-of-an-opening-wedge-high-tibial-osteotomy-with-2-stage-implantation-of-rotating-hinge-knee-prosthesis
#16
Sandrine Mariaux, Olivier Borens
Introduction: High tibial osteotomy (HTO) is a frequent and effective treatment for unicompartmental gonarthritis. Only a few articles are focused on the treatment of infected nonunion. Patient and Method: A 50-year-old obese patient was operated on by medial opening-wedge HTO. She developed a painful nonunion treated by hardware removal, allograft, and plate fixation. However, the nonunion persisted. 2 years later, cellulitis appeared with an abscess adjacent to the HTO plate...
2018: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/29782446/minimally-invasive-proximal-interphalangeal-joint-arthrodesis-using-headless-screw-surgical-technique
#17
Elizabeth A Newman, Maria C Orbay, Fiesky A Nunez, Fiesky Nunez
Proximal interphalangeal (PIP) joint arthritis causes debilitating hand pain and instability leading to significant functional impairment. Arthrodesis remains the gold standard for treatment of PIP arthritis. We present a minimally invasive PIP arthrodesis that provides rigid fixation with a headless compression screw. Seven patients who presented to the senior author with PIP joint arthritis underwent PIP arthrodesis by minimally invasive technique. A 1 cm transverse incision is made over the PIP joint, incising skin, central band, and articular capsule...
June 2018: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/29778751/cortical-erosion-after-elastic-stable-intramedullary-nail-fixation-for-pediatric-long-bone-fractures-case-series-according-to-the-site
#18
Kun-Bo Park, Je-Hyun Yoo, Seok-Woo Kim, Yoon Hae Kwak
BACKGROUND: Elastic stable intramedullary nail (ESIN) is widely used for treatment of long bone fractures in children. However, migration of the nail or cortical bone erosion in children has been reported. This study was conducted to investigate the incidence of cortical erosion according to the site and cortical erosion type. MATERIALS AND METHODS: A total of 221 normally developing children (223 fractures) who were treated with ESIN for fractures of the long bones without cortical breakage at immediate postoperative radiography and with the ESIN in position for more than 6 months were included...
May 17, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29773455/inferior-vena-cava-filter-strut-penetration-into-the-vertebral-column-a-case-of-10-year-clinical-follow-up
#19
David A Petrov, Aakash Chauhan, Sean Fitzpatrick, Daniel T Altman, Bethany Casagranda
BACKGROUND: The rate of vena cava (IVC) filter placement has increased over the past decade, especially in the orthopaedic trauma patient population. With the increasing use of IVC filters, radiologists and referring clinicians must be familiar with potential complications. CLINICAL CASE: This case report presents an 18-year-old polytraumatized patient who had an IVC filter placed and required T8-L2 posterior spinal fusion. At 4.5 years of follow-up, a computed tomography (CT) scan for painful spinal hardware incidentally found that the IVC filter had migrated into the L3 vertebral body...
April 18, 2018: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/29772988/combined-labeled-leukocyte-and-technicium-99-sulfur-colloid-bone-marrow-imaging-differentiating-primary-pyomyositis-pseudotumor-from-osteomyelitis-and-multiple-bone-infarcts
#20
Paul W Perdue, Allison B Spitzer, Dipal Chatterjee, Srinivas Kolla, Aditya V Maheshwari
A 53 year old-female patient with lupus had undergone a cephalo-medullary nailing for a femur shaft fracture 30 years ago. This was complicated by osteomyelitis, requiring multiple debridement procedures and hardware removal. Recently, she developed a painful soft tissue mass in the same region, which was ultimately diagnosed as pyomyositis. Because of chronic bone changes due to her past history, traditional imaging could not differentiate between osteomyelitis infarction and pseudotumor. A combined indium-labeled leukocyte scan with a technetium-99 sulfur colloid marrow scan ruled out osteomyelitis and guided proper treatment without osseous debridement and thus prevented unnecessary cross-contamination of the bone...
2018: Journal of Long-term Effects of Medical Implants
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