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https://www.readbyqxmd.com/read/28212664/the-impact-of-high-total-cholesterol-and-high-low-density-lipoprotein-on-avascular-necrosis-of-the-femoral-head-in-low-energy-femoral-neck-fractures
#1
Xianshang Zeng, Ke Zhan, Lili Zhang, Dan Zeng, Weiguang Yu, Xinchao Zhang, Mingdong Zhao, Zhicheng Lai, Runzhen Chen
BACKGROUND: Avascular necrosis of the femoral head (AVNFH) typically constitutes 5 to 15% of all complications of low-energy femoral neck fractures, and due to an increasingly ageing population and a rising prevalence of femoral neck fractures, the number of patients who develop AVNFH is increasing. However, there is no consensus regarding the relationship between blood lipid abnormalities and postoperative AVNFH. The purpose of this retrospective study was to investigate the relationship between blood lipid abnormalities and AVNFH following the femoral neck fracture operation among an elderly population...
February 17, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28167489/mechanical-properties-of-all-suture-anchors-for-rotator-cuff-repair
#2
N S Nagra, N Zargar, R D J Smith, A J Carr
OBJECTIVES: All-suture anchors are increasingly used in rotator cuff repair procedures. Potential benefits include decreased bone damage. However, there is limited published evidence for the relative strength of fixation for all-suture anchors compared with traditional anchors. MATERIALS AND METHODS: A total of four commercially available all-suture anchors, the 'Y-Knot' (ConMed), Q-FIX (Smith & Nephew), ICONIX (Stryker) and JuggerKnot (Zimmer Biomet) and a traditional anchor control TWINFIX Ultra PK Suture Anchor (Smith & Nephew) were tested in cadaveric human humeral head rotator cuff repair models (n = 24)...
February 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28149714/all-anterior-approach-for-arthroscopic-posterior-cruciate-ligament-reconstruction-with-remnant-preservation
#3
Tianwu Chen, Shaohua Liu, Jiwu Chen
We describe the all-anterior approach for arthroscopic posterior cruciate ligament (PCL) reconstruction with remnant preservation. In this technique, PCL is reconstructed through 3 anterior portals: anterolateral portal, anteromedial portal, and inferior anterolateral portal, whereas the PCL remnant is preserved with great possibility. With the PCL elevator and wire catcher (Smith & Nephew), a self-made wire loop is introduced into the joint through the tibial tunnel, and is used to pass the graft in an all-inside-out fashion...
December 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28116226/a-retrospective-comparison-of-the-performance-of-two-negative-pressure-wound-therapy-systems-in-the-management-of-wounds-of-mixed-etiology
#4
Theresa Hurd, Alan Rossington, Paul Trueman, Jennifer Smith
Objective: Negative pressure wound therapy (NPWT) has been shown to be effective in the management of chronic and surgical wounds. The two most widely used modalities of NPWT are vacuum-assisted closure (V.A.C.) therapy (KCI, Inc., San Antonio, Texas) and the RENASYS NPWT system (Smith & Nephew, Hull, United Kingdom). This evaluation compares the performance of the two systems in the management of wounds of mixed etiology. Approach: The evaluation is based on retrospective evaluation of more than 1,000 patients treated with NPWT in a community setting in Canada...
January 1, 2017: Advances in Wound Care
https://www.readbyqxmd.com/read/28088942/a-distal-lock-electromagnetic-targeting-device-for-intramedullary-nailing-suggestions-and-clinical-experience
#5
Guido Antonini, Wilfried Stuflesser, Cornelio Crippa, Georgios Touloupakis
PURPOSE: To describe our clinical experience with a system named SureShot? Distal Targeting (Smith & Nephew, Memphis, USA) based on magnetic field presence and discuss our suggestions on this technique. METHODS: We analysed prospectively 47 patients affected by humeral, tibial or femoral fractures, treated in our institution during a 3-year period of time (August 2010 to September 2013). We considered the following parameters: the time to set up, the time to position a single screw, the effectiveness of the system (drilling ad screwing), the irradiation exposure time during distal locking procedure and surgical complications...
December 1, 2016: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28050456/femoral-and-tibial-tunnel-widening-following-anterior-cruciate-ligament-reconstruction-using-various-modalities-of-fixation-a-prospective-observational-study
#6
Dileep Krishnamoorthy Srinivas, Mahesha Kanthila, Rama Prakasha Saya, Jvs Vidyasagar
INTRODUCTION: Bone tunnel enlargement after Anterior Cruciate Ligament Reconstruction (ACL-R) is a well-accepted phenomenon but there are very few published data comparing the extent of tunnel widening by various methods of fixation after ACL-R. AIM: To compare the femoral and tibial tunnel widening following ACL-R with different methods of fixation using CT scan. MATERIALS AND METHODS: This one year prospective study included all patients with chronic Anterior Cruciate Ligament (ACL) injury who underwent primary arthroscopic ACL-R using tripled hamstring tendon autograft...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27995304/patient-specific-instrumentation-versus-conventional-knee-arthroplasty-comparative-study
#7
Vlad Predescu, Catalin Prescura, Razvan Olaru, Liliana Savin, Paul Botez, Bogdan Deleanu
BACKGROUND: The key to a successful knee replacement is restoring normal kinematics with a neutral alignment, thus a hip-knee-ankle (HKA) angle of 180° (within 3° limits). Conventional TKR is proven to have excellent results but relies in extensive visual referencing of bony landmarks. Customised cutting blocks provide accurate bone cuts, also lowering the risk of fat embolism, blood loss and operating time. METHOD: We share our experience comparing two different TKA techniques using patient specific instrumentation (PSI) with the Visionaire knee and conventional instrumentation (CVI) from the same system (Genesis II Smith&Nephew)...
December 19, 2016: International Orthopaedics
https://www.readbyqxmd.com/read/27977577/negative-pressure-wound-therapy-aids-recovery-following-surgical-debridement-due-to-severe-bacterial-cellulitis-with-abdominal-abscess-post-cesarean-a-case-report-care-compliant
#8
Christopher N J Young, Ka Ying Bonnie Ng, Vanessa Webb, Sarah Vidow, Rajeswari Parasuraman, Sameer Umranikar
INTRODUCTION: Bacterial cellulitis post-Cesarean section is rare. Negative pressure wound therapy (NPWT) is widely used in various medical specialities; its effectiveness in obstetrics however remains the topic of debate-used predominantly as an adjunct to secondary intention specific to high-risk patient groups. Its application in the treatment of actively infected wounds post-Cesarean is not well documented. Here, we document NPWT in the treatment of an unusually severe case of bacterial cellulitis with abdominal abscess postpartum...
December 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27874910/short-versus-long-cephalomedullary-nails-for-pertrochanteric-hip-fracture
#9
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
#10
V E Ozden, N Saglam, G Dikmen, I R Tozun
Oxidized zirconium (Oxinium™; Smith & Nephew, Memphis, TN, USA) articulated with polyethylene in total hip arthroplasty (THA) appeared to have the potential to reduce wear dramatically. The thermally oxidized metal zirconium surface is transformed into 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 has been described. It occurred following joint dislocation or in situ succeeding disengagement of polyethylene liner...
February 2017: 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
#11
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...
December 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
#12
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...
February 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/27703419/spontaneous-fractures-of-a-modern-modular-uncemented-femoral-stem
#13
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
#14
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
#15
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. Orthopaedic drill bits are several orders more expensive than their similarly sized, publicly available industrial counterparts. We hypothesize that an industrial bit will generate less heat during drilling, and the bits will not generate more heat after multiple cortical passes...
February 2017: 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
#16
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
#17
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...
December 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
#18
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
#19
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
#20
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
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