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https://www.readbyqxmd.com/read/28506180/midterm-follow-up-of-treating-volar-marginal-rim-fractures-with-variable-angle-lcp-volar-rim-distal-radius-plates
#1
Chul Ki Goorens, Stijn Geeurickx, Pascal Wernaers, Barbara Staelens, Thierry Scheerlinck, Jean Goubau
BACKGROUND: Specific treatment of the volar marginal rim fragment of distal radius fractures avoids occurance of volar radiocarpal dislocation. Although several fixation systems are available to capture this fragment, adequately maintaining internal fixation is difficult. We present our experience of the first 10 cases using the 2.4 mm variable angle LCP volar rim distal radius plate (Depuy Synthes®, West Chester, US), a low-profile volar rim-contouring plate designed for distal plate positioning and stable buttressing of the volar marginal fragment...
June 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28481956/tibial-revision-knee-arthroplasty-with-metaphyseal-sleeves-the-effect-of-stems-on-implant-fixation-and-bone-flexibility
#2
Jan Nadorf, Stefan Kinkel, Simone Gantz, Eike Jakubowitz, J Philippe Kretzer
INTRODUCTION: Revision total knee arthoplasty often requires modular implants to treat bone defects of varying severity. In some cases, it may not be clear which module size and implant combination (e.g. sleeve and stem) should be chosen for a specific defect. When balancing implant stability and osseointegration against stress-shielding, it is important to choose an appropriate implant combination in order to match the given level of bone loss. Therefore, the necessity of stems in less extensive tibial defects and the advantage of different stems (lengths and stiffnesses) in combination with large metaphyseal sleeves on implant fixation and bone flexibility using a modular tibial revision knee system, were analyzed...
2017: PloS One
https://www.readbyqxmd.com/read/28462215/condylar-constrained-system-in-primary-total-knee-replacement-our-experience-and-literature-review
#3
Luigi Sabatini, Salvatore Risitano, Lorenzo Rissolio, Andrea Bonani, Francesco Atzori, Alessandro Massè
BACKGROUND: Constrained condylar knee (CCK) prosthesis are common used for revision surgery but can also help surgeons to improve implant stability in primary knee arthroplasty, in fact in severe knee arthrosis with serious deformity associated with a significant instability a more constrained articulation is required. With introduction of second generation of semi-constrained prosthesis, rate of complication is real decreased and a good survival rate and functional score results is showed...
March 2017: Annals of Translational Medicine
https://www.readbyqxmd.com/read/28458472/plating-of-pilon-fractures-based-on-the-orientation-of-the-fibular-shaft-component-a-biomechanical-study-evaluating-plate-stiffness-in-a-cadaveric-fracture-model
#4
Gennadiy A Busel, J Tracy Watson
OBJECTIVES: To evaluate mechanically superior method of pilon fracture fixation by comparing axial stiffness between anterolateral and medial tibial locking plates in a cadaveric fracture model. METHODS: Eight matched pairs of fresh frozen cadaver specimens (lower limb after through-knee disarticulation) were used to eliminate confounder of bone quality. Simulated pilon fractures were created so that each pair represented either varus or valgus fracture pattern (AO 43-A2) with associated fibular fractures (transverse or comminuted)...
June 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28442856/functional-outcome-of-fixation-of-complex-intra-articular-distal-radius-fractures-with-a-variable-angle-distal-radius-volar-rim-plate
#5
M Spiteri, W Ng, J Matthews, D Power
Aim To evaluate the outcome of these complex fractures using a volar approach and the DePuy Synthes variable-angle 2.4-mm distal radius rim plate. This plate is precontoured to the volar rim for placement distal to the watershed line allowing purchase of the rim fragment of the lunate facet. Its low profile and smooth edges are designed to minimize flexor tendon irritation. Method We report on a consecutive series of far distal AO-23B3 and AO-23C3 fractures treated using this plate in a tertiary hand center between November 2011 and May 2014...
April 2017: Journal of Hand and Microsurgery
https://www.readbyqxmd.com/read/28432457/outcome-and-revision-rate-of-uncemented-glenohumeral-resurfacing-c-a-p-after-5-8%C3%A2-years
#6
P C Geervliet, M P J van den Bekerom, P Spruyt, M Curvers, A van Noort, C P J Visser
BACKGROUND: Resurfacing of the glenohumeral joint for patients with glenohumeral arthritis has gained popularity since the first introduction. We report the mid-term results of the Global C.A.P. uncemented resurfacing shoulder prosthesis (DePuy Synthes). METHODS: From January 2007 to December 2009, 48 humeral cementless resurfacing prostheses in 46 patients were performed. All patients were diagnosed with primary glenohumeral osteoarthritis. Patients were contacted for review; the Constant Score, visual analog pain scale, Dutch Simple Shoulder Test, SF-12 scores and physical examination were assessed both preoperatively and yearly postoperatively...
April 21, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28416826/-surgical-technique-and-early-clinical-outcomes-of-direct-anterior-approach-to-total-hip-arthroplasty
#7
M Lv, J Q Zhang, X S Wang, Y Huang, W Li, C Y Zhang
OBJECTIVE: To describe the surgical technique of direct anterior approach to total hip arthroplasty and to report the early clinical outcomes. METHODS: A series of 100 consecutive, unselected patients who had 116 primary total hip arthroplasty surgeries (16 bilateral) done through direct anterior approach from March 11 2015 to June 21 2016 was reviewed. There were 50 male patients and 50 female patients. The average patient age was 51 years, and the average body mass index was 24...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28406908/considering-land-tenure-in-redd-participatory-measurement-reporting-and-verification-a-case-study-from-indonesia
#8
Mary Elizabeth Felker, Indah Waty Bong, Walker Holton DePuy, Lina Farida Jihadah
Measurement, Reporting, and Verification (MRV) systems are thought to be essential for effective carbon accounting and joint REDD+ carbon, conservation, and social development goals. Community participation in MRV (PMRV) has been shown to be both cost effective and accurate, as well as a method to potentially advance stakeholder empowerment and perceptions of legitimacy. Recognizing land tenure as a long-standing point of tension in REDD+ planning, we argue that its engagement also has a key role to play in developing a legitimate PMRV...
2017: PloS One
https://www.readbyqxmd.com/read/28373946/anteromedial-portal-anterior-cruciate-ligament-reconstruction-with-tibialis-anterior-allograft
#9
Steven Shamah, Daniel Kaplan, Eric J Strauss, Brian Singh
In an effort to better restore normal joint function and kinematics, recent emphasis has been placed on surgical techniques that provide a more anatomic reconstruction of the anterior cruciate ligament (ACL). With femoral tunnel placement shown to play a vital role in the biomechanics, stability, and clinical outcomes after ACL reconstruction, approaches that better approximate the ACL's native femoral origin have been adopted. The independent anteromedial portal technique is thought to better position the femoral tunnel within the native ACL footprint and leave the graft more posteroinferior on the wall of the lateral femoral condyle than the more traditional transtibial approach...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28246095/explant-analysis-of-the-biomet-magnum-recap-metal-on-metal-hip-joint
#10
S C Scholes, B J Hunt, V M Richardson, D J Langton, E Smith, T J Joyce
OBJECTIVES: The high revision rates of the DePuy Articular Surface Replacement (ASR) and the DePuy ASR XL (the total hip arthroplasty (THA) version) have led to questions over the viability of metal-on-metal (MoM) hip joints. Some designs of MoM hip joint do, however, have reasonable mid-term performance when implanted in appropriate patients. Investigations into the reasons for implant failure are important to offer help with the choice of implants and direction for future implant designs...
February 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28244914/investigation-of-taper-failure-in-a-contemporary-metal-on-metal-hip-arthroplasty-system-through-examination-of-unused-and-explanted-prostheses
#11
David Langton, Imran Ahmed, Peter Avery, Martin Bone, Nicholas Cooke, David Deehan, Patrick Duffy, Pedro Foguet, Stephen Green, James Holland, Anwar Jafri, Lee Longstaff, James Lord, Jonathan Loughead, R M Dominic Meek, Helen Murray, Ananda Nanu, A V F Nargol, Susan Claire Scholes, Raghavendra Prasad Sidaginamale, Susan Waller, Thomas Joyce
BACKGROUND: Large-diameter (≥36-mm) metal-on-metal (MoM) total hip replacements have been shown to fail at an unacceptably high rate. Globally, the DePuy Pinnacle prosthesis was the most widely used device of this type. There is evidence to suggest that one of the main reasons for the poor clinical performance of large-diameter MoM prostheses is the metal debris released from the head-stem taper junction-i.e., taper junction failure. The aim of this study was to investigate variation in the as-manufactured finish of the female taper surface and to determine its influence on material loss...
March 1, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28196036/a-prospective-study-of-four-total-ankle-arthroplasty-implants-by-non-designer-investigators
#12
Tina Lefrancois, Alastair Younger, Kevin Wing, Murray J Penner, Peter Dryden, Hubert Wong, Timothy Daniels, Mark Glazebrook
BACKGROUND: There are several types of prostheses available to surgeons when performing a total ankle arthroplasty (TAA). The main objective of this study was to summarize the clinical and functional outcomes of 4 TAA prostheses: the Hintegra implant (Integra LifeSciences), the Agility implant (DePuy), the Mobility implant (DePuy), and the Scandinavian Total Ankle Replacement (STAR) implant (Small Bone Innovations [SBi]). METHODS: Patients were prospectively recruited...
February 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28142345/total-knee-arthroplasty-conversion-for-patients-with-ankylosed-knees
#13
Hee-June Kim, Jong-Uk Mun, Kwang-Hwan Kim, Hee-Soo Kyung
INTRODUCTION: The purpose of this study was to evaluate the results of total knee arthroplasty for patients with ankylosed knees. METHODS: We evaluated seven patients (10 knees) who underwent total knee arthroplasties for ankylosed knees from 1995 to 2008. There were two men and five women, with a mean age of 44.1 years (42-48 years). The mean follow-up period was 10.2 years (1-19.5 years). A rectus snip was performed in all cases, and V-Y quadricepsplasty was used in one case of severe quadriceps contracture...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28134676/strategies-for-proximal-femoral-nailing-of-unstable-intertrochanteric-fractures-lateral-decubitus-position-or-traction-table
#14
Mesut Mehmet Sonmez, Savas Camur, Erden Erturer, Meric Ugurlar, Adnan Kara, Irfan Ozturk
BACKGROUND: The aim of this prospective randomized study was to compare the traction table and lateral decubitus position techniques in the management of unstable intertrochanteric fractures. METHODS: Eighty-two patients with unstable intertrochanteric fractures between 2011 and 2013 were included in this study. All patients were treated surgically with the Proximal Femoral Nail Antirotation implant (DePuy Synthes). Patients were randomized to undergo the procedure in the lateral decubitus position (42 patients) or with the use of a traction table (40 patients)...
March 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/28116264/failure-of-polyethelene-insert-locking-mechanism-after-a-posterior-stabilised-total-knee-arthroplasty-a-case-report
#15
Gurava Reddy Ay, Soundar Rajan D, Chiranjeevi T, Karthik C, Krishna Kiran E
INTRODUCTION: Disengagement of polyethylene insert used in total knee arthroplasty is a rare but serious complication. Still rarer is disengagement because of failure of tibial insert locking mechanism. We report a previously unpublished complication of polyethylene insert locking mechanism failure in a 10-months-old posterior stabilized total knee arthroplasty in a 70-year-old woman with osteoarthritis for whom Attune (Depuy) knee implant was used. CASE PRESENTATION: A 70-year-old female underwent (Attune, Depuy) primary bilateral posterior stabilised total knee arthroplasty in a private hospital...
July 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28089467/the-evolution-of-implant-design-decreases-the-incidence-of-lateral-release-in-primary-total-knee-arthroplasty
#16
Jonathan E Webb, Heidi Y Yang, Jamie E Collins, Elena Losina, Thomas S Thornhill, Jeffrey N Katz
BACKGROUND: Appropriate balancing of the patellofemoral joint (PFJ) using a lateral release can help to prevent patellar instability in total knee arthroplasty (TKA). Contemporary total knee implant designs are characterized by enhanced trochlear geometry more similar to native knee anatomy to minimize instability and reduce utilization of a lateral release. METHODS: We retrospectively reviewed consecutive TKA cases from a single senior surgeon's practice with 3 successive total knee designs: the Press-Fit Condylar (PFC), the Sigma, and the ATTUNE (DePuy, Warsaw, IN)...
December 14, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28042725/stepwise-illustration-of-teeth-fixation-semi-constrained-cervical-disc-arthroplasty
#17
Chih-Chang Chang, Jau-Ching Wu, Peng-Yuan Chang, Mei-Yin Yeh, Yi-Hsuan Kuo, Li-Yu Fay, Tsung-Hsi Tu, Wen-Cheng Huang, Henrich Cheng
There are many kinds of artificial discs available for cervical disc arthroplasty (CDA), with various designs of fixation and articulation mechanisms. Each of these designs has different features and theoretically fits most optimally in selected types of patients. However, there has been insufficient literature to guide individualized selection among these CDA devices. Since CDA aims to restore the joint function rather than arthrodesis, tailor-made size, shape, and mechanical properties should be taken into account for each candidate's target disc...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28042720/resection-of-uncovertebral-joints-and-posterior-longitudinal-ligament-for-cervical-disc-arthroplasty
#18
Tsung-Hsi Tu, Chih-Chang Chang, Jau-Ching Wu, Li-Yu Fay, Wen-Cheng Huang, Henrich Cheng
The most commonly accepted indications for cervical disc arthroplasty (CDA) are 1- and 2-level cervical disc herniation or spondylosis causing radiculopathy or myelopathy that is refractory to medical management. Unlike anterior cervical discectomy and fusion (ACDF), which eliminates motion, CDA aims to restore the physiological range of motion of the indexed joint. Thus, the effect of indirect decompression gained by the insertion of a sufficiently large interbody graft and incorporation into arthrodesis after ACDF cannot be duplicated for CDA...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28038883/orbital-fracture-repair-outcomes-with-preformed-titanium-mesh-implants-and-comparison-to-porous-polyethylene-coated-titanium-sheets
#19
Michelle Y Peng, Shannath L Merbs, Michael P Grant, Nicholas R Mahoney
BACKGROUND: Restoration of orbital volume after internal orbital fractures can prevent enophthalmos. A variety of allografts are commonly used including titanium mesh with and without porous polyethylene coating. Some controversy exists over the use of uncoated titanium mesh in the orbit. Newer products contoured to the three dimensional orbital anatomy aim to improve reestablishment of the complex orbital shape though studies of outcomes with their use are limited. METHODS: A retrospective chart review was performed to evaluate surgical outcomes in all patients who underwent orbital fracture repair with DePuy/Synthes titanium MatrixMIDFACE prefabricated implants (PFTi) as compared with porous polyethylene/titanium hybrid implants (PPETi) including Stryker Medpor Titan, MTB, and BTB implants...
December 3, 2016: Journal of Cranio-maxillo-facial Surgery
https://www.readbyqxmd.com/read/28029426/three-dimensional-finite-element-analysis-of-a-newly-developed-aliform-internal-fixation-system-for-occipitocervical-fusion
#20
Sui-Xiang Liao, Jian-Hua Wang, Yong-Qiang Zheng, Guan Zheng, Ge-Jing Wei, Hong Xia, Xiao-Hua Chen
For patients with occipital malformation, it is difficult to obtain reliable stability using three screws on the midline. A new aliform occipitocervical internal fixation system was designed. The occiput was fixed with 3, 7, or 11 screws, and a three-dimensional finite element model of the system was established. A compressive preload of 40N combined with a pure moment of 1.5Nm was applied to simulate normal flexion, extension, lateral bending, and axial rotation. The stress distribution across the screws on the occiput and the occipital displacement produced by the newly developed system were compared with those produced by the DePuy SUMMIT system...
October 28, 2016: Medical Engineering & Physics
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