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https://www.readbyqxmd.com/read/27874910/short-versus-long-cephalomedullary-nails-for-pertrochanteric-hip-fracture
#1
Nicholas B Frisch, Nickolas J Nahm, Jad G Khalil, Clifford M Les, Stuart T Guthrie, Michael A Charters
This study compared patients who underwent treatment with short or long cephalomedullary nails with integrated cephalocervical screws and linear compression. Patients with AO/OTA 31-A2 or A3 pertrochanteric fractures treated with either short (n=72) or long (n=97) InterTAN (Smith & Nephew, Memphis, Tennessee) cephalomedullary nails were reviewed. Information on perioperative measures (estimated blood loss, surgical time, and fluoroscopy time) and postoperative orthopedic complications (infection, implant failure, screw cutout, and periprosthetic femur fracture) was included...
November 22, 2016: Orthopedics
https://www.readbyqxmd.com/read/27871969/oxidized-zirconium-on-ceramic-catastrophic-coupling
#2
Vahit Emre Ozden, Necdet Saglam, Goksel Dikmen, Ismail Remzi Tozun
Oxidized zirconium (Oxinium™; Smith& Nephew, Memphis, TN, USA) articulatedwith polyethylene in total hip arthroplasty (THA) appeared to have the potential to reduce wear dramatically. The thermally oxidized metal zirconium surface is transformedinto ceramic like hard surface that is resistant to abrasion. The exposure of soft zirconium metal under hard coverage surface after the damage of oxidized zirconium femoral head have been described.It occurred following joint dislocation or in situ succeedingdisengagement of polyethylene liner...
November 18, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27802925/effects-of-suture-site-or-penetration-depth-on-anchor-location-in-all-inside-meniscal-repair
#3
Ryohei Uchida, Tatsuo Mae, Kunihiko Hiramatsu, Ryo Iuchi, Kazutaka Kinugasa, Konsei Shino, Hideki Yoshikawa, Ken Nakata
BACKGROUND: To evaluate the effects of suture site or penetration depth on anchor location in all-inside meniscal repair. METHODS: Eight fresh-frozen cadaveric knees were evaluated after meniscal repair using eight FasT-Fix360 (FF360) devices (Smith & Nephew Endoscopy, Andover, MA) (16 anchors) for each knee. The penetration depth was 14mm, the distance same from the periphery to insertion point, in four knees (Group A) and that in the remaining four knees (Group B) was 18mm...
October 29, 2016: Knee
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/27703419/spontaneous-fractures-of-a-modern-modular-uncemented-femoral-stem
#5
Chelsea N Koch, Laura Serrano Mateo, Stephen Kayiaros, Kevin A Cassidy, Seth A Jerabek, Alejandro Gonzalez Della Valle
BACKGROUND: Femoral stem fracture following total hip arthroplasty is an uncommon event that requires immediate revision surgery. QUESTIONS/PURPOSES: We report on four patients who experienced stem fractures of one design and a review of the US Food and Drug Administration adverse event reports on this design. METHODS: Fracture surfaces of four EMPERION™ (Smith & Nephew, Memphis, TN) femoral stems were analyzed under optical and scanning electron microscopy...
October 2016: HSS Journal: the Musculoskeletal Journal of Hospital for Special Surgery
https://www.readbyqxmd.com/read/27701129/biomechanical-skin-property-evaluation-for-wounds-treated-with-synthetic-and-biosynthetic-wound-dressings-and-a-newly-developed-collagen-matrix-during-healing-of-superficial-skin-defects-in-a-rat-models
#6
Manuel Held, Anne-Sophie Engelke, Dascha Sophie Tolzmann, Afshin Rahmanian-Schwarz, Hans-Eberhard Schaller, Jens Rothenberger
INTRODUCTION: There is a high prevalence of superficial wounds such as partial-thickness burns. Treatment of these wounds frequently includes temporary application of wound dressings. The aim of this study was to compare a newly developed collagen matrix with commonly used temporary skin dressings for treatment of partial-thickness skin defects. MATERIALS AND METHODS: Through a skin dermatome, 42 standardized superficial skin defects were generated on the back of 28 adult male Lewis rats...
September 2016: Wounds: a Compendium of Clinical Research and Practice
https://www.readbyqxmd.com/read/27682019/heat-generation-during-bone-drilling-a-comparison-between-industrial-and-orthopaedic-drill-bits
#7
Christopher Hein, Serkan Inceoglu, David Juma, Lee Zuckerman
OBJECTIVES: Cortical bone drilling for preparation of screw placement is common in multiple surgical fields. The heat generated while drilling may reach thresholds high enough to cause osteonecrosis. This can compromise implant stability. Orthopedic drill bits are several orders more expensive than their similarly sized, publicly available industrial counterparts. We hypothesize an industrial bit will generate less heat during drilling, and the bits will not generate more heat after multiple cortical passes...
September 24, 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27670135/role-of-femoral-anterior-bow-in-cephalomedullary-nailing-finite-element-analysis-and-new-index-estimation
#8
Dong Ren, Yueju Liu, Ming Li, Zhaohui Song, Shuangquan Yao, Pengcheng Wang
BACKGROUND: Cephalomedullary Nail (CMN) is seen as the mainstay of internal fixation in femoral fractures. The purpose of the study was to present an accurate calculation method by simulating diverse anterior bow femoral models with finite element software. We hypothesized that anterior cortical penetration in distal femur would occur in patients whose femoral anterior bow was identified as too large for nailing by preoperative measurement of contralateral X-ray. METHODS: A 31-year healthy male was selected for building 3D bone model through computed tomography (CT) scan of right femoral femur...
September 26, 2016: BMC Surgery
https://www.readbyqxmd.com/read/27631309/do-cobalt-and-chromium-levels-predict-osteolysis-in-metal-on-metal-total-hip-arthroplasty
#9
Lisa Renner, Tom Schmidt-Braekling, Martin Faschingbauer, Friedrich Boettner
INTRODUCTION: Serum metal ions are part of the regular follow-up routine of patients with metal-on-metal total hip arthroplasties (MoM-THA). Increased cobalt levels have been suggested to indicate implant failure and corrosion. QUESTIONS: (1) Is there a correlation between the size of the osteolysis measured on a CT scan and metal ion levels? (2) Can metal ion levels predict the presence of osteolysis in MoM-THA? (3) Are cobalt and chromium serum levels or the cobalt-chromium-ratio diagnostic for osteolysis? MATERIALS AND METHODS: CT scans of patients (n = 75) with a unilateral MoM-THA (Birmingham Hip System, Smith & Nephew, TN, USA) implanted by a single surgeon were reviewed to determine the presence of osteolysis...
September 15, 2016: Archives of Orthopaedic and Trauma 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/27555887/biomechanical-modeling-of-the-forces-applied-to-closed-incisions-during-single-use-negative-pressure-wound-therapy
#11
John Loveluck, Tom Copeland, Jason Hill, Allan Hunt, Robin Martin
OBJECTIVES: The use of negative pressure wound therapy (NPWT) on closed surgical incisions is an emerging technology that may reduce the incidence of complications such as surgical site infections. One of the mechanisms through which incisional NPWT is thought to operate is the reduction of lateral tension across the wound. METHODS: Finite element analysis computer modeling and biomechanical testing with Syndaver SynTissue™ synthetic skin were used to explore the biomechanical forces in the presence of the PICO(⋄) (Smith & Nephew Ltd, Hull, United Kingdom) negative pressure wound therapy system on a sutured incision...
2016: Eplasty
https://www.readbyqxmd.com/read/27552463/biomechanical-evaluation-of-two-arthroscopic-biceps-tenodesis-techniques-proximal-interference-screw-and-modified-percutaneous-intra-articular-transtendon
#12
David E Hartigan, Matthew C Beran, James E Fleischli, Donald F D'Alessandro, Naiquan Nigel Zheng
The percutaneous intra-articular transtendon (PITT) technique has recently been shown to have results comparable to those of more accepted techniques. Its mode of failure was secondary to the suture pulling through the tendon substance. A modification was made whereby the tendon is locked within the suture configuration in an attempt to avoid pullout. We compared this new technique with a well-accepted technique of all-arthroscopic interference screw. In each of 8 pairs of cadaveric shoulders (mean age, 55 years; range, 51-59 years), one shoulder was randomized to be treated with either modified PITT or interference screw (Biceptor; Smith & Nephew) biceps tenodesis, and the other shoulder was treated with the other technique...
July 2016: American Journal of Orthopedics
https://www.readbyqxmd.com/read/27492582/the-primary-factor-for-suture-configuration-at-rotator-cuff-repair-width-of-mattress-or-distance-from-tear-edge
#13
Onur Hapa, Ahmet Karakaşlı, Onur Başçı, Hakan Cici, Berivan Çeçen, Hasan Havitçioğlu
OBJECTIVES: The aims of this study was first to investigate whether the bite size or the bite distance from the tear edge is of primary importance in mattress suture configuration for rotator cuff repair. Secondly, whether the use of a 450 left side bent Arthro-Pierce™ (Smith & Nephew, Andover, USA) during suture passage can be more effective on the strength of the configuration compared to a straight Arthro-Pierce™. MATERIALS AND METHODS: Twenty-eight bovine infraspinatus muscle tendons were randomized into four groups...
August 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27473927/improvising-a-posterior-nasal-pack-with-equipment-in-a-basic-first-aid-kit
#14
Allison K Royer, Mark C Royer
Posterior epistaxis is a serious condition that can be difficult to treat in a wilderness setting. The initial standard of care involves packing the affected nostril with a 7 to 9 cm nasal pack to tamponade the bleed. These packs are often unavailable outside of the emergency or operating room. This study set out to determine whether a posterior nasal pack could be constructed from the supplies present in a basic first aid kit in order to control massive nasal hemorrhage in a wilderness setting. A basic first aid kit was utilized to construct a posterior nasal pack that was inserted into an anatomical model and visibly compared with the Rapid Rhino (Posterior, 7...
September 2016: Wilderness & Environmental Medicine
https://www.readbyqxmd.com/read/27462542/arthroscopically-assisted-open-reduction-internal-fixation-of-ankle-fractures-significance-of-the-arthroscopic-ankle-drive-through-sign
#15
William W Schairer, Benedict U Nwachukwu, David M Dare, Mark C Drakos
Standalone open reduction-internal fixation (ORIF) of unstable ankle fractures is the current standard of care. Intraoperative stress radiographs are useful for assessing the extent of ligamentous disruption, but arthroscopic visualization has been shown to be more accurate. Concomitant arthroscopy at the time of ankle fracture ORIF is useful for accurately diagnosing and managing syndesmotic and deltoid ligament injuries. The arthroscopic ankle drive-through sign is characterized by the ability to pass a 2...
April 2016: Arthroscopy Techniques
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/27231796/patterns-of-statin-use-in-a-real-world-population-of-patients-at-high-cardiovascular-risk
#17
Iris Lin, Jennifer Sung, Robert J Sanchez, Usha G Mallya, Mark Friedman, Mary Panaccio, Andrew Koren, Peter Neumann, Joseph Menzin
BACKGROUND: Widespread use of statins has improved hypercholesterolemia management, yet a significant proportion of patients remain at risk for cardiovascular (CV) events. Analyses of treatment patterns reveal inadequate intensity and duration of statin therapy among patients with hypercholesterolemia, and little is known about real-world statin use, specifically in subgroups of patients at high risk for CV events. OBJECTIVE: To examine patterns of statin use and outcomes among patients with high-risk features who newly initiated statin monotherapy...
June 2016: Journal of Managed Care & Specialty Pharmacy
https://www.readbyqxmd.com/read/27209341/hysteroscopic-proximal-tubal-occlusion-versus-laparoscopic-salpingectomy-as-a-treatment-for-hydrosalpinges-prior-to-ivf-or-icsi-an-rct
#18
K Dreyer, M C I Lier, M H Emanuel, J W R Twisk, B W J Mol, R Schats, P G A Hompes, V Mijatovic
STUDY QUESTION: Does hysteroscopic proximal tubal occlusion by intratubal devices as a treatment for hydrosalpinges result in comparable ongoing pregnancy rates following IVF/ICSI when compared with laparoscopic salpingectomy? SUMMARY ANSWER: Hysteroscopic proximal tubal occlusion by intratubal devices is inferior to laparoscopic salpingectomy in the treatment of hydrosalpinges in women undergoing IVF/ICSI with respect to ongoing pregnancy rates. WHAT IS KNOWN ALREADY: It is known that women with hydrosalpinges undergoing IVF have poorer pregnancy outcomes compared with women with other forms of tubal infertility...
September 2016: Human Reproduction
https://www.readbyqxmd.com/read/27188836/early-subsidence-predicts-failure-of-a-cemented-femoral-stem-with-minor-design-changes
#19
Per-Erik Johanson, Martin Antonsson, Bita Shareghi, Johan Kärrholm
BACKGROUND: Radiostereometry (RSA) measurements of early micromotion can predict later failure in hip and knee prostheses. In hip implants, RSA has been particularly helpful in the evaluation of composite-beam stem designs. The Spectron EF Primary stem (Smith & Nephew, London, UK) has shown inferior performance compared with its predecessors in both clinical studies and registry reports. Early RSA studies have shown somewhat greater subsidence for the Spectron EF Primary stem compared with the earlier Spectron EF, but still within boundaries considered to be safe...
October 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27177889/clinical-and-mri-donor-site-outcomes-following-autologous-osteochondral-transplantation-for-talar-osteochondral-lesions
#20
Ethan J Fraser, Ian Savage-Elliott, Youichi Yasui, Jakob Ackermann, Geoffrey Watson, Keir A Ross, Timothy Deyer, John G Kennedy
BACKGROUND: Autologous osteochondral transplantation (AOT) has an inherent risk of donor site morbidity (DSM). The reported rates of DSM vary from 0% to 50%, with few studies reporting clinical or imaging outcomes at the donor site as a primary outcome and even fewer report these outcomes when a biosynthetic plug backfill is employed. Although TruFit (Smith & Nephew, Andover, MA) plugs have been removed from the market for regulatory purposes, biphasic plugs (including TruFit plugs) have been used for several years and the evaluation of these is therefore pertinent...
September 2016: Foot & Ankle International
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