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https://www.readbyqxmd.com/read/29322896/influence-of-varus-valgus-positioning-of-the-nanos%C3%A2-and-metha%C3%A2-short-stemmed-prostheses-on-stress-shielding-of-metaphyseal-bone
#1
V Brinkmann, F Radetzki, N Gutteck, S Delank, A Zeh
The aim of this study was to analyze bone remodeling around the Nanos® (Smith & Nephew) and Metha® (Aesculap AG) implants as a function of varus/valgus stem positioning. In 75 patients with diagnosed coxarthrosis, either Nanos® (n= 51) or Metha® (n= 24) prostheses were implanted. Digital assessment of plain radiographs immediately, 97 days, and 381 days after THA showed no clinically-relevant migration, angulation, or change in offset and center of rotation. The DEXA scans showed significant BMD changes in Gruen zones 1 (-12...
March 2017: Acta Orthopaedica Belgica
https://www.readbyqxmd.com/read/29310377/fat-grafting-for-resurfacing-an-exposed-implant-in-lower-extremity-a-case-report
#2
Yun-Nan Lin, Chieh-Han Chuang, Shih-Hao Huang, Shu-Hung Huang, Tsai-Ming Lin, I-Wen Lin, Sin-Daw Lin, Yur-Ren Kuo
RATIONALE: Although numerous reconstruction protocols have been reported for lower leg trauma, those for distal leg trauma remain few. We present the case of a woman with an implant exposure wound, who was successfully treated through fat grafting, without major flap surgery. PATIENT CONCERNS: An 83-year-old woman with an exposed implant in lower extremity received reconstruction surgery once and the surgery failed. She refused additional major surgery and negative pressure wound therapy...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29305233/anterolateral-distal-tibia-locking-plate-osteosynthesis-and-their-ability-to-capture-otac3-pilon-fragments
#3
Arun Aneja, T David Luo, Boshen Liu, Molina Domingo, Kerry Danelson, Jason J Halvorson, Eben A Carroll
BACKGROUND: Intra-articular Pilon fractures remain therapeutically challenging due to osteochondral fracturing and comminution, marginal impaction, and insult to the soft tissue envelope. The purpose of this study was to compare the efficacy of anterolateral distal tibial locking plates in capturing main fracture fragments in tibial plafond fractures. METHODS: From May 2011 to Dec 2015, 169 OTA C-type pilon fractures met inclusion and exclusion criteria with computed tomographic (CT) scans performed prior to definitive fixation...
December 16, 2017: Injury
https://www.readbyqxmd.com/read/29276120/damage-assessment-of-retrieved-birmingham-monoblock-cups-is-conversion-to-dual-mobility-head-a-viable-revision-option
#4
Trevor C Gascoyne, Brent A Lanting, Kieran J Derksen, Matthew G Teeter, Thomas R Turgeon
BACKGROUND: A novel revision technique for failed hip resurfacings involves retention of the acetabular cup, if well-fixed, which is mated to dual-mobility (DM) prosthesis in a traditional hip replacement configuration. It is unknown whether existing damage on the retained cup will result in unacceptable wear of the DM prosthesis. METHODS: Thirty retrieved Birmingham (Smith & Nephew) monoblock cups were visually scored for damage features and area of coverage. Surface roughness measurements were obtained within each damage feature as well as reference points on each cup...
October 26, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29235669/portable-negative-pressure-wound-therapy-for-pyoderma-gangrenosum-report-of-two-cases
#5
Yasuyuki Yamaguchi, Teruki Yanagi, Kazumasa Sato, Norihiro Yoshimoto, Yu Hirata, Inkin Ujiie, Machiko Nishimura, Ken Natsuga, Chihiro Shiiya, Ichiro Tsukinaga, Hiroshi Shimizu
Pyoderma gangrenosum is a chronic non-infectious neutrophilic dermatosis that causes undermining ulcers. Topical therapies for the deep ulcers of pyoderma gangrenosum have not been established. To investigate whether negative-pressure wound therapy is effective for a pyoderma gangrenosum ulcer, we used the PICO single use negative-pressure wound therapy system (Smith & Nephew, London, UK) for two pyoderma gangrenosum patients. In these cases, the ulcers decreased in size and necrolytic tissue was removed notably...
December 13, 2017: Journal of Dermatology
https://www.readbyqxmd.com/read/29174405/mixing-of-head-stem-components-in-total-hip-arthroplasty
#6
Ulrike Mueller, Benjamin Panzram, Steffen Braun, Robert Sonntag, J Philippe Kretzer
BACKGROUND: Implant manufacturers proclaim that the tapers of modular total hip arthroplasty are not standardized and can vary from manufacturer to manufacturer. That is why the combination of various components from different manufacturers ("Mix and Match") is not permitted. In this study, different taper combinations were investigated experimentally to assess the effect of "Mix and Match" regarding the taper connection strength. METHODS: Torque-off tests using hip stems and metal femoral heads from 6 different implant manufacturers were performed...
November 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29128347/routine-use-of-pico-dressings-may-reduce-overall-groin-wound-complication-rates-following-peripheral-vascular-surgery
#7
Christina A Fleming, Mariya Kuteva, Karen O'Hanlon, Gavin O'Brien, Gerald McGreal
BACKGROUND: Approximately 19% of morbidity in peripheral vascular surgery is attributable to wound complications, which can result in delayed healing, but also arterial or graft infection leading to limb loss and even mortality in extreme cases. AIM: To determine whether groin wound complications were reduced following the routine introduction of PICO negative pressure wound therapy dressings (Smith & Nephew, Hull, England) in patients who had peripheral vascular surgery...
November 8, 2017: Journal of Hospital Infection
https://www.readbyqxmd.com/read/29091044/dispersion-risk-associated-with-surgical-debridement-devices
#8
Mark Granick, Liel Rubinsky, Chaitra Parthiban, Mayilvahanan Shanmugam, Narayanan Ramasubbu
INTRODUCTION: Surgical instrumentation is now available to facilitate wound debridement. The 2 primary options involve different energy applications, but both have the potential to spray. The Versajet II (Smith & Nephew, London, UK) utilizes a high-powered water jet to disrupt tissue and remove debris by means of the Venturi effect. The SonicVac (Misonix, Farmingdale, NY) is a direct-contact, low-frequency ultrasound debriding device. It delivers a high-energy ultrasound to a wound surface via a fluid medium, causing bubble cavitation, a physical effect of rapid pressure waves causing bubbles to form and implode that releases mechanical energy...
October 2017: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/29089224/is-cross-linked-polyethylene-an-improvement-over-conventional-ultra-high-molecular-weight-polyethylene-in-total-knee-arthroplasty
#9
Bertrand Boyer, Barbara Bordini, Dalila Caputo, Thomas Neri, Susanna Stea, Aldo Toni
BACKGROUND: Reducing polyethylene (PE) wear by increasing the cross-linking encouraged surgeons to hope for increased total knee arthroplasty (TKA) survival rates. Different methods of manufacturing cross-linked polyethylene (XLPE) were introduced, following promising in vitro results. Is there a measurable effect of cross-linking on TKA survival? METHODS: A registry study was conducted, focusing on fixed tibial inserts in primary TKA. Conventional PE represented 87% of the liners, 10% were cross-linked and 2% were antioxidant PE...
October 10, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29049260/a-quantitative-analysis-of-microcirculation-in-skin-defects-covered-with-topical-wound-dressings-or-a-newly-developed-collagen-matrix
#10
Manuel Held, Fabian Medved, Wiebke Petersen, Dascha Sophie Tolzmann, Afshin Rahmanian-Schwarz, Hans-Eberhard Schaller, Jens Rothenberger
OBJECTIVE: Innovative skin substitutes and temporary wound dressings are frequently used in the treatment of superficial and partial-thickness wounds. The aim of this study was to compare 2 commonly used temporary skin dressings with a newly developed collagen matrix to determine changes in microcirculation as measured by blood flow, hemoglobin oxygenation, and relative hemoglobin values during healing of partial-thickness skin defects. METHODS: This animal study involved 28 adult male Lewis rats...
November 2017: Advances in Skin & Wound Care
https://www.readbyqxmd.com/read/28970121/preoperative-knee-deformity-and-kinematics-impact-postoperative-knee-kinematics-in-total-knee-arthroplasty
#11
Naoki Seito, Tomohiro Onodera, Yasuhiko Kasahara, Eiji Kondo, Norimasa Iwasaki, Tokifumi Majima
BACKGROUND: The purpose of this study was to evaluate the relationship between the preoperative knee deformity/kinematic pattern and the postoperative knee kinematic pattern in posterior cruciate ligament substituting (PS)-total knee arthroplasty (TKA). METHODS: This study involved 39 patients with medial osteoarthritis who underwent a primary PS-TKA using a computed-tomography-based navigation system. All the operations were performed by a single surgeon using a subvastus approach, modified gap technique and the same PS type of prosthesis (Genesis II™ total knee system, Smith & Nephew, Memphis, TN, USA)...
September 29, 2017: Knee
https://www.readbyqxmd.com/read/28940016/bi-cruciate-stabilized-total-knee-arthroplasty-can-reduce-the-risk-of-knee-instability-associated-with-posterior-tibial-slope
#12
Masaru Hada, Hideki Mizu-Uchi, Ken Okazaki, Takao Kaneko, Koji Murakami, Yuan Ma, Satoshi Hamai, Yasuharu Nakashima
PURPOSE: The purpose of this study was to evaluate the relationship between posterior tibial slope and knee kinematics in bi-cruciate stabilized (BCS) total knee arthroplasty (TKA), which has not been previously reported. METHODS: This computer simulation study evaluated Journey 2 BCS components (Smith & Nephew, Inc., Memphis, TN, USA) implanted in a female patient to simulate weight-bearing stair climbing. Knee kinematics, patellofemoral contact forces, and quadriceps forces during stair climbing (from 86° to 6° of flexion) were computed in the simulation...
September 22, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28885895/meta-analysis-of-comparative-trials-evaluating-a-prophylactic-single-use-negative-pressure-wound-therapy-system-for-the-prevention-of-surgical-site-complications
#13
REVIEW
Vicki Strugala, Robin Martin
BACKGROUND: We report the first meta-analysis on the impact of prophylactic use of a specific design of negative pressure wound therapy (NPWT) device on surgical site complications. METHODS: Articles were identified in which the specific single-use NPWT device (PICO⋄, Smith & Nephew) was compared with standard care for surgical site infection (SSI), dehiscence, or length of stay (LOS). Risk ratio (RR) ±95% confidence interval (CI) (SSI; dehiscence) or mean difference in LOS ±95% CI was calculated using RevMan v5...
October 2017: Surgical Infections
https://www.readbyqxmd.com/read/28869636/structure-and-corrosion-resistance-of-co-cr-mo-alloy-used-in-birmingham-hip-resurfacing-system
#14
Ewa Dobruchowska, Monika Paziewska, Krzysztof Przybyl, Kazimierz Reszka
PURPOSE: The endoprostheses made of cobalt-chromium-molybdenum (Co-Cr-Mo) alloys belong to the group of the most popular metallic implants used for reconstruction of hip joints. For such biomaterials, the primary goal is a correct and long-term functioning in the aggressive environment of body fluids. Therefore, the purpose of this study was to examine both the morphology and the corrosion resistance of implants made of the cobalt alloy used in Birmingham Hip Resurfacing (BHR) system (Smith & Nephew)...
2017: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/28854763/early-clinical-outcomes-of-a-new-posteriorly-stabilized-total-knee-arthroplasty-prosthesis-comparisons-with-two-established-prostheses
#15
Nimesh P Jain, Sung Yup Lee, Vivek M Morey, Suri Chong, Yeon Gwi Kang, Tae Kyun Kim
Purpose: We sought to determine whether early clinical performance of new posterior stabilized (PS) knee system, the Vega-PS (Aesculap), is better than that of two established total knee arthroplasty (TKA) prostheses, the E.motion-PS (Aesculap) and the Genesis II (Smith & Nephew) in terms of functional outcomes, patient satisfaction, and incidence of adverse events. Materials and Methods: We compared the clinical outcomes of 206 consecutive TKAs using Vega-PS with those of 205 TKAs using E...
September 1, 2017: Knee Surgery & related Research
https://www.readbyqxmd.com/read/28795073/biomechanical-comparison-of-a-first-and-a-second-generation-all-soft-suture-glenoid-anchor
#16
John Erickson, Frank Chiarappa, Jonathan Haskel, Justin Rice, Adam Hyatt, James Monica, Aman Dhawan
BACKGROUND: All-soft tissue suture anchors provide advantages of decreased removal of bone and decreased glenoid volume occupied compared with traditional tap or screw-in suture anchors. Previous published data have led to biomechanical concerns with the use of first-generation all-soft suture anchors. PURPOSE/HYPOTHESIS: The purpose of this study was to evaluate the load to 2-mm displacement and ultimate load to failure of a second-generation all-soft suture anchor, compared with a first-generation anchor and a traditional PEEK (polyether ether ketone) anchor...
July 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28780004/prognostic-factors-for-all-inside-meniscal-repair-a-87-case-series
#17
L Laurendon, T Neri, F Farizon, R Philippot
INTRODUCTION: Repair is indicated for tears in non-degenerative menisci. The literature reports a 15% failure rate for all-inside repair. The aim of the present study was to determine prognostic factors for failure of all-inside meniscal repair. The study hypothesis was that epidemiological, clinical and surgical factors affect success. MATERIAL AND METHODS: A retrospective study included 87 meniscal repair procedures, with or without anterior cruciate ligament (ACL) tear...
August 2, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28750856/readability-of-patient-education-materials-from-the-web-sites-of-orthopedic-implant-manufacturers
#18
Meghan M Yi, Paul H Yi, Khalil I Hussein, Michael B Cross, Craig J Della Valle
BACKGROUND: Prior studies indicate that orthopedic patient education materials are written at a level that is too high for the average patient. The purpose of this study was to assess the readability of online patient education materials provided by orthopedic implant manufacturers. METHODS: All patient education articles available in 2013 from the web sites of the 5 largest orthopedic implant manufacturers were identified. Each article was evaluated with the Flesch-Kincaid (FK) readability test...
July 11, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28716026/short-stem-total-hip-arthroplasty-for-osteonecrosis-of-the-femoral-head-in-patients-60%C3%A2-years-or-younger-a-3-to-10-year-follow-up-study
#19
Antonio Capone, Fabrizio Bienati, Stefania Torchia, Daniele Podda, Giuseppe Marongiu
BACKGROUND: In young patients with osteonecrosis of the femoral head (ONFH), short-stem total hip arthroplasty (THA) could allow a potential advantage in preserving metaphyseal bone-stock, when revision surgery might become necessary. However, only a few studies have evaluated the outcome of short-stem THAs in ONFH. We reviewed the prospectively collected data of a cementless partial neck-retaining short-stem with ceramic-on-ceramic bearings in ONFH patients. METHODS: Thirty patients (37 hips) younger than 60 years (mean age at surgery, 51...
July 17, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28521381/-time-in-the-or-outcome-and-surgeons-experience-the-use-of-patient-matched-instruments-in-arthroplasty-of-the-knee
#20
Christoph Schulze, Cem Kai Inan, Claudia Hacke, Alexander Kaltenborn, André Gutcke
Background Arthrosis of the knee is a common problem in Germany that is often treated with arthroplasty. To support the orthopaedic surgeon, person-matched instruments (PMI) are available from several providers. In this study we investigated the clinical and radiological outcome of the use of the PMI Visionaire(™) (Smith&Nephew). Furthermore, we investigated the influence of operative experience of the orthopaedic surgeon on the clinical and radiological results. Time in the operating room (OR) was identified as a parameter for cost effectiveness even during training to become an orthopaedic surgeon...
August 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
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