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https://www.readbyqxmd.com/read/29785590/clinical-application-of-a-minimally-invasive-cement-augmentable-schanz-screw-rod-system-to-treat-pelvic-ring-fractures
#1
Paul Schmitz, Florian Baumann, Yves P Acklin, Boyko Gueorguiev, Michael Nerlich, Stephan Grechenig, Michael Bernd Müller
PURPOSE: The purpose of this study is to analyze the results using the USS fracture MIS system (DePuy Synthes) to treat instable pelvic ring fractures. As its outstanding feature, it is the only Schanz screw and rod system at present that combines angular stability, perforation/fenestration of the screws for cement-augmentation, a variable screw length, and a large screw diameter. MATERIALS AND METHODS: Retrospective investigation of 134 pelvic ring fractures treated in 2012-2013...
May 21, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29773173/gene-expression-in-adverse-reaction-to-metal-debris-around-metal-on-metal-arthroplasty-an-rna-seq-based-study
#2
Antti Pemmari, Tiina Leppänen, Erja-Leena Paukkeri, Antti Eskelinen, Teemu Moilanen, Eeva Moilanen
Joint replacement surgery is a standard treatment of advanced osteoarthritis (OA). Since 2000, cobalt-chromium (CoCr) metal-on-metal (MoM) implants were widely used in hip arthroplasties. Some patients developed "adverse reaction to metal debris" (ARMD) around the prosthesis, resulting in a need for revision surgery. In the present study, we addressed the pathogenesis of ARMD by genome-wide expression analysis. Pseudosynovial ARMD tissue was obtained from revision surgery of Articular Surface Replacement (ASR, DePuy, Warsaw, IN, USA) hip arthroplasties...
July 2018: Journal of Trace Elements in Medicine and Biology
https://www.readbyqxmd.com/read/29732504/femoral-offset-found-not-to-affect-metal-ion-levels-in-metal-on-metal-total-hip-arthroplasty
#3
Eoghan Pomeroy, Fergal Macnamara, Evelyn Murphy, Niall McGoldrick, Anant Mahapatra, Nasir Awan
BACKGROUND: Failure to restore femoral offset in metal on polyethylene total hip arthroplasty (THA) causes polyethylene wear and aseptic loosening. To our knowledge, no study to date has investigated the relationship between femoral offset and wear in metal-on-metal (MOM) THA. AIMS: In this study, we investigated the relationship between femoral offset and wear by measuring circulating metal ion levels in MOM THA. METHODS: In this retrospective study, we identified patients who had undergone MOM THA with the ASR XL system (DePuy International Ltd...
May 7, 2018: Irish Journal of Medical Science
https://www.readbyqxmd.com/read/29723877/effect-of-bipolar-radiofrequency-energy-on-canine-stifle-joint-fluid-temperature
#4
Koji Aoki, Cheryl L Waldner, Suresh Sathya, Cindy Shmon
OBJECTIVE:  The aim of this study was to evaluate the effect of bipolar radiofrequency (RF) energy on canine stifle joint fluid temperature. MATERIALS AND METHODS:  A standard stifle arthroscopy was performed on 15 canine large breed cadaveric stifle joints. A bipolar RF (VAPR III, 2.3-mm side effect electrode; Depuy Mitek, Raynham, Massachusetts, United States) unit was activated in the joint (1) with or without direct tissue contact, (2) with or without additional 18-gauge needle outflow and (3) for 15 and 30 seconds...
May 3, 2018: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/29718688/evaluation-and-reduction-of-magnetic-resonance-imaging-artifacts-induced-by-distinct-plates-for-osseous-fixation-an-in-vitro-study-3t
#5
Carsten Rendenbach, Maximilian Schoellchen, Julie Bueschel, Tobias Gauer, Jan Sedlacik, Daniel Kutzner, Pekka K Vallittu, Max Heiland, Ralf Smeets, Jens Fiehler, Susanne Siemonsen
OBJECTIVES: To analyze Magnetic Resonance Imaging (MRI) artifact induced at 3 Tesla by bioresorbable, titanium and glass fiber reinforced composite (GFRC) plates for osseous reconstruction. METHODS: Fixation plates including bioresorbable polymers (Inion CPS, Inion Oy, Tampere, Finland; Rapidsorb, DePuy Synthes, Umkirch, Germany; Resorb X, Gebrueder KLS Martin GmbH, Tuttlingen, Germany), Glass fiber reinforced composite (Skulle Implants Oy, Turku, Finland) and titanium plates of varying thickness and design (DePuy Synthes, Umkirch, Germany) were embedded in agarose gel and a 3T MRI was performed using a standard protocol for head and neck imaging including T1w and T2w sequences...
May 2, 2018: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/29712566/powiff-prospective-study-of-wrist-internal-fixation-of-fracture-a-protocol-for-a-single-centre-superiority-randomised-controlled-trial-to-study-the-efficacy-of-the-vrp-2-0-distal-radius-plate-austofix-versus-the-va-lcp-depuy-synthes-for-distal-radius-fractures
#6
V D Varghese, Peter Smitham, Stuart Howell, Suzanne Edwards, Mark Rickman
BACKGROUND: Distal radial fractures are one of the most common orthopaedic cases that present to the A&E department. Surgical intervention is warranted in displaced intraarticular fractures and fractures with more than the recommended angulation or shortening, and is most commonly treated with volarly placed fixed angle locking plates. The aim of this study is to determine and compare the efficacy of two different plates for surgical treatment of distal radius fractures. The VRP 2...
April 30, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29657845/long-term-bone-remodelling-around-legendary-cementless-femoral-stems
#7
Charles Rivière, Guido Grappiolo, Charles A Engh, Jean-Pierre Vidalain, Antonia-F Chen, Nicolas Boehler, Jihad Matta, Pascal-André Vendittoli
Bone remodelling around a stem is an unavoidable long-term physiological process highly related to implant design. For some predisposed patients, it can lead to periprosthetic bone loss secondary to severe stress-shielding, which is thought to be detrimental by contributing to late loosening, late periprosthetic fracture, and thus rendering revision surgery more complicated.However, these concerns remain theoretical, since late loosening has yet to be documented among bone ingrowth cementless stems demonstrating periprosthetic bone loss associated with stress-shielding...
February 2018: EFORT Open Reviews
https://www.readbyqxmd.com/read/29655660/use-of-the-matrixwave%C3%A2-system-with-dentures-to-establish-maxillomandibular-fixation-in-edentulous-patients
#8
N B Agochukwu, J Maus, D Wang, D Stewart
Various methods have been described to establish maxillomandibular fixation in the treatment of fractures of atrophic, edentulous mandibles. We used the Synthes MatrixWAVE™ system (DePuy Synthes) in combination with dentures in two patients with fractured, edentulous, atrophic mandibles. Fixation was maintained for fractures that were not amenable to, or did not require, open reduction and internal fixation, and the mandibles were both well-healed and had good function at the end of treatment.
April 11, 2018: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/29544516/a-comparison-of-clinical-and-patient-reported-outcomes-of-the-cemented-attune-and-pfc-sigma-fixed-bearing-cruciate-sacrificing-knee-systems-in-patients-who-underwent-total-knee-replacement-with-both-prostheses-in-opposite-knees
#9
Brian W Carey, James Harty
BACKGROUND: The ATTUNE Knee by DePuy Synthes was introduced in 2013. It is designed to provide better range of motion and address patient-reported instability. The PFC Sigma Knee, an earlier prosthesis by DePuy Synthes, is a common knee replacement with a strong clinical track record. Our aim is to compare the outcomes after primary total knee replacement for end-stage knee osteoarthritis of the PFC and ATTUNE knee systems in 21 patients who each have prosthesis in opposite knees using WOMAC, Oxford Knee and SF-12 scores and evaluation of range of motion...
March 15, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29529701/cost-analysis-of-all-polyethylene-compared-to-metal-backed-implants-in-total-knee-arthroplasty
#10
Karim Sabeh, Milad Alam, Samuel Rosas, Shahrose Hussain, Michaela Schneiderbauer
INTRODUCTION: The growing trends of total knee arthroplasty (TKA) foreshadow an inevitable increase in the financial burden on healthcare expenditure estimated to almost nine billion dollars annually. This study aims to demonstrate the potential savings when using all-polyethylene (AP) compared to metal-backed (MB) tibial components and describes the cost variability amongst three major commercially available implants. MATERIALS AND METHODS: The cost of AP versus MB implants was analyzed using a large nationwide database, Emergency Care Research Institute (ECRI)...
March 12, 2018: Surgical Technology International
https://www.readbyqxmd.com/read/29526639/the-effect-of-inter-body-fusion-cage-design-on-the-stability-of-the-instrumented-spine-in-response-to-cyclic-loading-an-experimental-study
#11
Ron N Alkalay, Robert Adamson, Michael W Groff
BACKGROUND CONTEXT: In the lumbar spine, end plate preparation for the interbody fusion cages may critically affect the cage's long term performance. This study investigated the effect of the interbody cage design on the compliance and cage subsidence of instrumented spines under cyclic compression. PURPOSE: To quantify the role of cage geometry and bone density on the stability of the spinal construct in response to cyclic compressive loads. STUDY DESIGN: Changes in the cage-bone interface and the effect of bone density on these changes were evaluated in a human cadaveric model for three intervertebral cage designs...
March 8, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29408687/clinical-and-radiological-outcomes-of-a-cohort-of-9-patients-with-anatomical-fractures-of-the-cuboid-treated-by-locking-plate-fixation
#12
L Rony, P de Sainte Hermine, V Steiger, F Ferchaud, P Cronier
INTRODUCTION: Cuboid fractures are very rare. Hence, their treatment has not been standardized. Advances in imaging techniques, particularly three-dimensional computed tomography (3D CT), and the introduction of cuboid-specific plates has improved the care of these injuries. The aim of this study was to determine the radiological and clinical outcomes of anatomical reconstruction of comminuted cuboid fractures with a locking plate. HYPOTHESIS: Fixation of comminuted cuboid fractures with a cuboid-specific locking plate leads to stable anatomical reduction and good functional outcomes...
April 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29405776/the-safe-use-of-long-screws-in-l5-s1-stand-alone-anterior-interbody-fusion-for-olisthesis-cases
#13
Matthias A König, Michael P Grevitt, Nasir A Quraishi, Bronek M Boszczyk
BACKGROUND: Stand-alone anterior interbody fusion (STALIF) with poly-ether-ether-ketone (PEEK) cages could offer a treatment option in olisthesis cases. The fixation of the PEEK-cage at the L5/S1 inferior endplate with long divergent screws however might endanger neural sacral structures, especially the S1 nerve root. If shorter screws are used, the achieved bony purchase might not be sufficient to resist the pull out and shear forces at the lumbosacral junction. The aim of the present investigation was to evaluate the use of long screws in PEEK-cages for olisthesis cases at the L5/S1 segment and its neurological complications...
February 6, 2018: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29383271/survivorship-of-revision-wrist-replacement
#14
E M Pinder, K G Chee, M Hayton, S R Murali, S C Talwalkar, I A Trail
Purpose  This study aims to report the 5-year survivorship of revision wrist arthroplasties and to report midterm clinical and radiological results. Materials and Methods  All patients receiving a revision wrist arthroplasty in our unit between January 1, 1997 and October 31, 2010 were identified, and clinical notes retrospectively analyzed for Quick Disabilities of the Arm, Shoulder and Hand (quickDASH), Patient Evaluation Method (PEM), Patient-Rated Wrist Evaluation (PRWE), the range of movement, and visual analog score (VAS)...
February 2018: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/29369059/use-of-an-ultrasonic-bone-curet-for-the-extraction-of-a-cervical-artificial-disc-a-novel-application-a-case-report
#15
J Timothy, V Petralia, J R Wilson
CASE: Eighteen months after implantation of a C6-C7 cervical artificial disc (ProDisc-C; DePuy Synthes), a 44-year-old woman presented with right-sided C7 radiculopathy. Imaging revealed posterior subsidence of the prosthesis, with C7 foraminal stenosis. An ultrasonic curet was used to safely and effectively extract the prosthesis without neurologic complication; safe access for the insertion of an intervertebral cage was facilitated. CONCLUSION: The ultrasonic curet was a safe and effective adjunct for revision artificial cervical disc replacement surgery; this technique may help to reduce potential injury to neural structures in a procedure with a traditionally high complication rate...
January 24, 2018: JBJS Case Connector
https://www.readbyqxmd.com/read/29354433/stump-incorporation-for-anterior-cruciate-ligament-reconstruction-a-step-towards-a-more-anatomical-reconstruction
#16
Walid Reda, Ahmed Khedr
In most anterior cruciate ligament (ACL) tears, the tear is at the femoral side leaving a robust stump attached to the tibia. Stump-preserving ACL reconstruction carries the advantage of rapid reinnervation and revascularization of the graft. In this technique, the femoral tunnel is created after exposing the femoral footprint. The ACL tibial stump is split and the tip of the ACL tibial guide is introduced through this split to reach the center of the tibial footprint. The tibial tunnel is then created and the ACL stump is bored to allow the passage of the graft...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29327546/-bone-mineral-density-decreased-is-a-high-risk-factor-for-uncemented-acetabular-cups-migration-in-female-total-hip-arthroplasty-patients
#17
Jia Liu, Jiang Deng, Xiao-Song Han, Lin Xu
OBJECTIVE: To investigate the decrease of bone mineral density in female patients, effects on acetabular displacement. METHODS: From October 2013 to November 2015, a total of 34 patients underwent total hip replacement in the Department of orthopedics, the Third Affiliated Hospital of Zunyi Medical College. The two groups of patients were female and the patients were treated with hip osteoarthritis. Based on the lowest value of preoperative dual energy X-ray bone mineral density (DXA), the patients were divided into normal group and low bone mineral density(-3...
January 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29318087/treatment-with-helical-blade-cephalomedullary-nail-for-two-part-basicervical-proximal-femoral-fracture-in-elderly-patients-a-retrospective-observational-study
#18
Ichiro Okano, Takatoshi Sawada, Nobumasa Kushima, Tetsuya Tachibana, Katsunori Inagaki
Background: Basicervical proximal femoral fracture is a known subtype of extracapsular fracture and is mechanically unstable, especially for the rotational direction, which may lead to implant failure. A cephalomedullary nail (CMN) is widely used for the fixation of unstable extracapsular fracture; however, its application for basicervical fracture remains controversial. Helical blade CMN is proven to have more rotational stability than traditional lag screw implants and potentially advantageous in the treatment of basicervical fracture...
December 2017: Geriatric Orthopaedic Surgery & Rehabilitation
https://www.readbyqxmd.com/read/29282027/polyaxial-locking-plates-in-treating-distal-humeral-fractures-a-comparative-randomized-trial-for-clinical-outcome
#19
Moritz Crönlein, Martin Lucke, Marc Beirer, Dominik Pförringer, Chlodwig Kirchhoff, Peter Biberthaler, Karl F Braun, Sebastian Siebenlist
BACKGROUND: Management of distal humeral fractures remains to be one of the most challenging aspects in trauma surgery. Low profile plating systems with variable angle screw fixation represent a crucial advancement to the established angular stable locking plates with considerable attention in current research. The aim of the prospective randomized trial was to review the preliminary results and patients' outcome following treatment with these newly developed implants and to rule out potential differences in fracture treatment of two different plating systems...
December 28, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29258356/grave-fraudulence-in-medical-device-research-a-narrative-review-of-the-pin-seeding-study-for-the-pinnacle-hip-system
#20
Joan E Steffen, Ella A Fassler, Kevin J Reardon, David S Egilman
In 2001, DePuy, a wholly-owned subsidiary of Johnson & Johnson (J&J/DePuy), initiated a seeding study called the "Multi-center, Prospective, Clinical Evaluation of Pinnacle Acetabular Implants in Total Hip Arthroplasty" (PIN Study). J&J/DePuy designed this study to develop new business opportunities during the launch of their Pinnacle Hip System (PHS) and generate survivorship data for marketing. This article, the first review of a seeding trial for a medical device, examines internal company documents relating to the PIN Study; the analysis herein focuses on the integrity of J&J/DePuy's research practices in conception, implementation, and analysis...
2018: Accountability in Research
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