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https://www.readbyqxmd.com/read/27904932/-the-reverse-shoulder-arthroplasty-delta-xtend-mid-term-results
#1
S Gruber, C Schoch, M Geyer
BACKGROUND: Reverse shoulder arthroplasty (RSA) has become a frequently used and established treatment for patients with cuff tear arthropathy, increasingly also for patients with fracture sequelae (FS), failed rotator cuff reconstruction and omarthrosis with cuff insufficiency. Since 2007 new generation prostheses, for example Delta Xtend (Depuy, Warsaw, USA), have been used, but few mid-term results have been published. OBJECTIVES: The aim of this study is to report on the outcome after RSA after a mean follow-up of 68 months (range 63-75), to verify the already published, encouraging early results and to learn about the function and pain situation after RSA in the mid-term period...
November 30, 2016: Der Orthopäde
https://www.readbyqxmd.com/read/27874909/risk-factors-for-intraoperative-proximal-femoral-fracture-during-primary-cementless-tha
#2
Ran Zhao, Hong Cai, Yanqing Liu, Hua Tian, Ke Zhang, Zhongjun Liu
Intraoperative proximal femoral fracture, one of the most common complications of total hip arthroplasty (THA), occurs more often in cementless procedures and can affect rehabilitation, hospitalization time, and cost of treatment. The goal of this study was to identify risk factors for intraoperative proximal femoral fracture in THA to identify high-risk groups preoperatively and minimize the incidence of this complication. This nested case-control study included 904 primary cementless THA procedures (769 patients) performed between January 2009 and July 2015...
November 22, 2016: Orthopedics
https://www.readbyqxmd.com/read/27834448/tibial-revision-knee-arthroplasty-influence-of-modular-stems-on-implant-fixation-and-bone-flexibility-in-aori-type-t2a-defects
#3
Jan Nadorf, Simone Gantz, Konner Kohl, Jan P Kretzer
BACKGROUND: Due to the varying bone defects presented to surgeons during revision total knee arthroplasty, modular implant systems are preferred over standard implant designs. However, every implant combination (sleeves, stems and augments) can affect the fixation in different ways and thus influence the long-term outcome. We therefore aimed to analyze the effect of large metaphyseal sleeves with and without short modular stems on implant fixation and bone flexibility of a modular tibial revision knee system...
November 29, 2016: International Journal of Artificial Organs
https://www.readbyqxmd.com/read/27781667/peripheral-snap-fit-locking-mechanisms-and-smooth-surface-finish-of-tibial-trays-reduce-backside-wear-in-fixed-bearing-total-knee-arthroplasty
#4
Łukasz Łapaj, Adrian Mróz, Paweł Kokoszka, Jacek Markuszewski, Justyna Wendland, Celina Helak-Łapaj, Jacek Kruczyński
Background and purpose - Severe backside wear, observed in older generations of total knee replacements (TKRs), led to redesign of locking mechanisms to reduce micromotions between tibial tray and inlay. Since little is known about whether this effectively reduces backside wear in modern designs, we examined backside damage in retrievals of various contemporary fixed-bearing TKRs. Patients and methods - A consecutive series of 102 inlays with a peripheral (Stryker Triathlon, Stryker Scorpio, DePuy PFC Sigma, Aesculap Search Evolution) or dovetail locking mechanism (Zimmer NexGen, Smith and Nephew Genesis II) was examined...
October 26, 2016: Acta Orthopaedica
https://www.readbyqxmd.com/read/27776930/discrepancy-between-cervical-disc-prostheses-and-anatomical-cervical-dimensions
#5
Sinan Karaca, Ahmet Onur Akpolat, Ahmet Oztermeli, Mehmet Nuri Erdem, Mehmet Aydogan
OBJECTIVE: The aim of this study was to assess appropriateness of the sizes of available cervical disc prostheses based on tomographic measurement of human cervical vertebrae. METHODS: The anatomic dimensions of the C3-C7 segments were measured on 50 patients (age range 26-47 years) with computerized tomography scan and compared with the sizes of the popular cervical total disc prostheses (CTDP) at the market [Bryan (Medtronic), Prodisc-C (Synthes), Prestige LP (Medtronic), Discover (DePuy)]...
October 21, 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27748254/retrospective-comparison-of-functional-and-radiological-outcome-between-two-contemporary-high-flexion-knee-designs
#6
Vikash Kapoor, Daipayan Chatterjee, Sutanu Hazra, Anirban Chatterjee, Parag Garg, Kaustav Debnath, Soham Mandal, Sudipto Sarkar
INTRODUCTION: Patient satisfaction after total knee replacement (TKR) depends on the amount of pain relief and the functional activities achieved. An important criterion of good functional outcome is the amount of flexion achieved and whether the patient can manage high flexion activities. In order to increase the amount of safe flexion, various implant designs have been developed. This study aims to compare the outcome after TKR using two contemporary high flexion knee designs: Sigma CR150 High Flex Knee prosthesis (Depuy, Warsaw, Indiana) and NexGen High Flex Knee prosthesis (Zimmer, Warsaw, Indiana)...
2016: SICOT-J
https://www.readbyqxmd.com/read/27683679/the-outcome-of-pedicle-screw-instrumentation-removal-for-ongoing-low-back-pain-following-posterolateral-lumbar-fusion
#7
Mario G Zotti, Oscar P Brumby-Rendell, Ben McDonald, Tom Fisher, Christovalantis Tsimiklis, Wai Weng Yoon, Orso L Osti
BACKGROUND: Our aim was to determine whether patients derived benefit from removal of pedicle screw instrumentation for axial pain without other cause using our surgical technique and patient selection. A secondary aim was to investigate factors that were associated with poorer outcomes for this procedure as well as complication rate in this cohort. METHODS: Theater records from a single spinal surgeon's practice were reviewed to identify patients that had undergone lumbar fusion for discogenic back pain with subsequent pedicle screw instrumentation removal (Expedium, DePuy Synthes) in the preceding 3 years with a minimum of 18 months follow-up...
December 2015: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/27595079/use-of-a-new-knee-prosthesis-as-an-articulating-spacer-in-two-stage-revision-of-infected-total-knee-arthroplasty
#8
Rasmus Juul, Jesper Fabrin, Klaus Poulsen, Henrik Morville Schroder
PURPOSE: To report our experience with two-stage revision using a new femoral component (NFC) spacer (Depuy Synthes) as an articulating spacer. MATERIALS AND METHODS: In this retrospective study, we reviewed 22 two-stage revisions that were performed using an NFC spacer in 22 patients suspected of having an infected total knee arthroplasty (TKA) from December 2010 to March 2013. The result was considered successful when eradication of infection was achieved using only one NFC spacer...
September 2016: Knee Surgery & related Research
https://www.readbyqxmd.com/read/27583107/are-western-knee-designs-dimensionally-correct-for-korean-women-a-morphometric-study-of-resected-femoral-surfaces-during-primary-total-knee-arthroplasty
#9
Jun-Bae Kim, Suk-Joo Lyu, Hyung Wook Kang
BACKGROUND: The purpose of this study was to determine the shape of the distal femur of Korean women compared with the prostheses currently available in Korea. METHODS: Morphometric data (5 parameters) were measured in 356 resected femurs of Korean women undergoing primary total knee arthroplasty (TKA) utilizing the LCS knee implant (DePuy). The data were then compared with 5 additional contemporary TKA implant systems. RESULTS: Implant designs based on Caucasian population data do not ideally match the distal femoral morphology of Korean women...
September 2016: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/27574265/relationship-between-pull-out-strength-and-oscillation-angle-in-bipolar-cups-an-in-vitro-study
#10
N Kaku, T Tabata, H Tsumura
PURPOSE: To compare the past and present bipolar hip arthroplasty (BHA) models in terms of balance between pull-out strength and oscillation angle (OA). METHODS: The pull-out strength and OA of 8 BHA models were compared: UPF-II, IBC, and Tandem XLPE (Smith & Nephew); Ringloc x (Biomet); J-FX (DePuy); Bipolar (Nakashima Medical); Multipolar (Zimmer); and Centrax (Stryker). RESULTS: Respectively for the UPF-II, IBC, Tandem, Ringloc, J-FX, Nakashima Bipolar, Multipolar, and Centrax, the mean pull-out strength was 2219 N, 3303 N, 1503 N, 951 N, 1453 N, 1856 N, 1536 N, and 753 N, whereas the mean OA was 54...
August 2016: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/27545050/a-randomized-clinical-trial-to-compare-the-effectiveness-of-rotator-cuff-repair-with-or-without-augmentation-using-porcine-small-intestine-submucosa-for-patients-with-moderate-to-large-rotator-cuff-tears-a-pilot-study
#11
Dianne Bryant, Richard Holtby, Kevin Willits, Robert Litchfield, Darren Drosdowech, Alison Spouge, David White, Gordon Guyatt
BACKGROUND: The rate of rotator cuff repair failure is between 13% and 67%. Porcine small intestine submucosa (SIS) may be suitable to augment the repair. METHODS: There were 62 patients with moderate and large cuff tears randomized to repair alone (control) or augmentation with SIS (Restore Orthobiologic Implant; DePuy, Warsaw, IN, USA). Primary outcome was repair failure using magnetic resonance arthrography. Randomization occurred on completion of the repair...
October 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27534584/invasive-placental-disease-the-impact-of-a-multi-disciplinary-team-approach-to-management
#12
John C Smulian, Ana-Liza Pascual, Helai Hesham, Emma Qureshey, M Bijoy Thomas, Amy M Depuy, Amanda B Flicker, William E Scorza
PURPOSE: To determine the impact of a structured multi-disciplinary management strategy on clinical outcomes in women with invasive placental disease (IPD). MATERIALS AND METHODS: This was a retrospective cohort study of consecutive women having peripartum hysterectomies with IPD over seven years. For the most recent three years, a structured multidisciplinary team (MDT) reviewed each suspected case, created a management plan, and implemented that plan. Outcomes were compared between cases delivered prior to and after the MDT process was started...
August 18, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27471212/factors-associated-with-trunnionosis-in-the-metal-on-metal-pinnacle-hip
#13
Harry S Hothi, Antti P Eskelinen, Reshid Berber, Olli S Lainiala, Teemu P S Moilanen, John A Skinner, Alister J Hart
BACKGROUND: Trunnionosis of the tapered head-stem junction of total hip arthroplasties, either through corrosion or mechanical wear, has been implicated in early implant failure. Retrieval analysis of large numbers of failed implants can help us better understand the factors that influence damage at this interface. METHODS: In this study, we examined 120 retrieved total hip arthroplasties of one bearing design, the 36-mm diameter metal-on-metal, DePuy Pinnacle, that had been paired with 3 different stems...
June 29, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27466864/stem-cells-in-spine-surgery
#14
Kenneth K Hansraj
INTRODUCTION: Spine surgeons are embracing advanced biologic technologies in an attempt to help millions of people achieve a better outcome in spine surgery. These new technologies may be complicated to understand, partly because the contribution of different types of cells has not been definitively identified. This paper describes the characteristics of the stem cells used in spine surgery, including their actions and possible complications. The description necessitates an overview of all studies to date on the use of stem cells in spine surgery, as well as other cells used in cellular therapy...
July 29, 2016: Surgical Technology International
https://www.readbyqxmd.com/read/27312481/influence-of-third-body-particles-originating-from-bone-void-fillers-on-the-wear-of-ultra-high-molecular-weight-polyethylene
#15
Raelene M Cowie, Silvia Carbone, Sean Aiken, John J Cooper, Louise M Jennings
Calcium sulfate bone void fillers are increasingly being used for dead space management in infected arthroplasty revision surgery. The presence of these materials as loose beads close to the bearing surfaces of joint replacements gives the potential for them to enter the joint becoming trapped between the articulating surfaces; the resulting damage to cobalt chrome counterfaces and the subsequent wear of ultra-high-molecular-weight polyethylene is unknown. In this study, third-body damage to cobalt chrome counterfaces was simulated using particles of the calcium sulfate bone void fillers Stimulan(®) (Biocomposites Ltd...
August 2016: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/27264277/ability-of-modern-distal-tibia-plates-to-stabilize-comminuted-pilon-fracture-fragments-is-dual-plate-fixation-necessary
#16
Phillip Penny, Michael Swords, Jason Heisler, Adam Cien, Andrew Sands, Peter Cole
OBJECTIVES: The purpose of this study was to examine the screw trajectory of ten commercially available distal tibia plates and compare them to common fracture patterns seen in OTA C type pilon fractures to determine their ability to stabilize the three most common fracture fragments while buttressing anterolateral zones of comminution. HYPOTHESIS: We hypothesized that a single plate for the distal tibia would fail to adequately stabilize all three main fracture fragments and zones of comminution in complex pilon fractures...
August 2016: Injury
https://www.readbyqxmd.com/read/27203415/same-level-fracture-of-the-tibial-metal-tray-and-polyethylene-insert-after-total-knee-arthroplasty
#17
Jong Yeal Kang, Yong Seuk Lee
The authors report a case of failure fracture of the tibial metal tray and polyethylene insert at the same level in a 73-year-old woman 10 years after total knee arthroplasty using the AMK Total Knee System (DePuy, Warsaw, Indiana). Causes of this fracture are analyzed and discussed, with the focus on the importance of component design, position, and size. The overall aim of this case report is for orthopedic surgeons to avoid this complication in total knee arthroplasty by paying attention to these controllable factors...
July 1, 2016: Orthopedics
https://www.readbyqxmd.com/read/27167420/-eleven-year-experience-with-total-ankle-arthroplasty
#18
S Popelka, A Sosna, P Vavřík, D Jahoda, V Barták, I Landor
UNLABELLED: PURPOSE OF THE STUDY Total joint replacement is one of the options in surgical treatment of advanced ankle arthritis. It allows the ankle to remain mobile but, unfortunately, it does not provide the same longevity as total knee or hip replacements. Therefore, decisions concerning the kind of treatment are very individual and depend on the clinical status and opinion of each patient. MATERIAL AND METHODS A total of 132 total ankle replacements were carried out in the period from 2004 to 2015...
2016: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/27160555/can-physical-joint-simulators-be-used-to-anticipate-clinical-wear-problems-of-new-joint-replacement-implants-prior-to-market-release
#19
John B Medley
One of the most important mandates of physical joint simulators is to provide test results that allow the implant manufacturer to anticipate and perhaps avoid clinical wear problems with their new products. This is best done before market release. This study gives four steps to follow in conducting such wear simulator testing. Two major examples involving hip wear simulators are discussed in which attempts had been made to predict clinical wear performance prior to market release. The second one, involving the DePuy ASR implant systems, is chosen for more extensive treatment by making it an illustrative example to explore whether wear simulator testing can anticipate clinical wear problems...
May 2016: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/27155996/failure-at-the-tibial-cement-implant-interface-with-the-use-of-high-viscosity-cement-in-total-knee-arthroplasty
#20
Judith E Kopinski, Ajay Aggarwal, Ryan M Nunley, Robert L Barrack, Denis Nam
BACKGROUND: Recent literature has shown debonding of the tibial implant-cement interface as a potential cause for implant loosening. The purpose of this case series is to report this phenomenon in a historically well-performing implant when used with high-viscosity cement (HVC). METHODS: Thirteen primary cemented Biomet Vanguard total knee arthroplasties were referred to 1 of 2 institutions with complaints of persistent pain after their index procedure. A radiographic and infectious work-up was completed for each patient...
April 12, 2016: Journal of Arthroplasty
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