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J C Montoya, L J Eckel, D R DeLone, A L Kotsenas, F E Diehn, L Yu, A C Bartley, R E Carter, C H McCollough, J G Fletcher
BACKGROUND AND PURPOSE: Given the positive impact of early intervention for craniosynostosis, CT is often performed for evaluation but radiation dosage remains a concern. We evaluated the potential for substantial radiation dose reduction in pediatric patients with suspected craniosynostosis. MATERIALS AND METHODS: CT projection data from pediatric patients undergoing head CT for suspected craniosynostosis were archived. Simulated lower-dose CT images corresponding to 25%, 10%, and 2% of the applied dose were created using a validated method...
February 9, 2017: AJNR. American Journal of Neuroradiology
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
Nathan P Douglass, Anthony W Behn, Marc R Safran
PURPOSE: To evaluate the cyclic displacement, maximum load to failure, and failure mode of multiple all-suture anchors (ASAs) in 2 different densities of sawbones cancellous bone substitute. METHODS: Anchors tested included the Suturefix Ultra 1.7 mm, JuggerKnot 1.45 mm (No. 1 and No. 2 MaxBraid) and 2.9 mm, Y-Knot Flex 1.3 mm and 1.8 mm, Iconix 1, 2, 25, and 3, Q-Fix 1.8 mm, and Bioraptor 2.3 PK. The Bioraptor served as a non-all-suture-based control. Seven to eleven anchors were tested in both 20 and 30 pounds per cubic foot (pcf) test blocks that were chosen to simulate glenoid and acetabular cancellous bone, respectively...
January 26, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
F Alan Barber, Morley A Herbert
PURPOSE: To evaluate the biomechanical and design characteristics of all-suture anchors. METHODS: All-suture anchors were tested in fresh porcine cortical bone and biphasic polyurethane foam blocks by cyclic loading (10-100 N for 200 cycles), followed by destructive testing parallel to the insertion axis at 12.5 mm/s. Endpoints included ultimate failure load, displacement at 100 and 200 cycles, stiffness, and failure mode. Anchors tested included JuggerKnot (1...
December 22, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
M Michael Khair, Jeffrey S Grzybowski, Benjamin D Kuhns, Thomas H Wuerz, Elizabeth Shewman, Shane J Nho
PURPOSE: To quantify how increasing interportal capsulotomy size affects the force required to distract the hip and to biomechanically compare simple side-to-side suture repair to acetabular-based suture anchors as capsular repair techniques. METHODS: Twelve fresh-frozen cadaveric hip specimens were dissected to the capsuloligamentous complex of the hip joint and fixed in a material testing system, such that a pure axial distraction of the iliofemoral ligament could be achieved...
March 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
Chih-Kai Hong, Ting-Hsuan Kuo, Ming-Long Yeh, I-Ming Jou, Cheng-Li Lin, Wei-Ren Su
BACKGROUND: Numerous needleless techniques for tendon graft fixation that feature several advantages have been reported. However, there are few studies that have compared the holding strength between the needleless techniques (rolling hitch and modified rolling hitch) and traditional suture methods. QUESTIONS/PURPOSES: To compare the tendon graft-holding strength of the rolling hitch and modified rolling hitch with the Krackow stitch in an in vitro porcine biomechanical model...
February 2017: Clinical Orthopaedics and related Research
Alex M Gillen, Amelia S Munsterman, R Reid Hanson
OBJECTIVE: To investigate the strength, size, and holding capacity of the self-locking forwarder knot compared to surgeon's and square knots using large gauge suture. STUDY DESIGN: In vitro mechanical study. STUDY POPULATION: Knotted suture. METHODS: Forwarder, surgeon's, and square knots were tested on a universal testing machine under linear tension using 2 and 3 USP polyglactin 910 and 2 USP polydioxanone. Knot holding capacity (KHC) and mode of failure were recorded and relative knot security (RKS) was calculated as a percentage of KHC...
November 2016: Veterinary Surgery: VS
L Willemot, R Elfadalli, K C Jaspars, M H Ahw, J Peeters, N Jansen, G Declerq, O Verborgt
Purpose : The aim of this study was to assess radiological and clinical outcome after arthroscopic all--suture anchor labral repair. Method: 20 patients treated for anterior and superior labral instability (mean age 29, range 14-51 years) were assessed at a minimum follow-up time of 1 year (mean 19 months ; range, 12-28 months). Postoperative MRI scans were assessed by 3 independent radiologists. The radiological appearance of bone at the anchor-site was judged by the presence of cyst formation, tunnel widening (> 2 mm) or bone edema...
August 2016: Acta Orthopaedica Belgica
Alex M Gillen, Amelia S Munsterman, Ramsis Farag, Matthew O D Coleridge, R Reid Hanson
OBJECTIVE: To evaluate the strength, size, and holding capacity of the Aberdeen knot compared to surgeon's and square knots using large gauge suture. STUDY DESIGN: In vitro mechanical study. STUDY POPULATION: Knotted suture. METHODS: Aberdeen, surgeon's, and square knots were tested using 2 and 3 USP polyglactin 910 and 2 USP polydioxanone under linear tension on a universal testing machine. Mode of failure and knot holding capacity (KHC) were recorded and relative knot security (RKS) was calculated as a percentage of KHC...
October 2016: Veterinary Surgery: VS
Katherine A O'Hanlan, Pamela L Emeney, Alfred Peters, Margaret S Sten, Stacey P McCutcheon, Danielle M Struck, Joseph K Hoang
Objective. To review the vaginal cuff complications from a large series of total laparoscopic hysterectomies in which the laparoscopic culdotomy closure was highly standardized. Methods. Retrospective cohort study (Canadian Task Force Classification II-3) of consecutive total and radical laparoscopic hysterectomy patients with all culdotomy closures performed laparoscopically was conducted using three guidelines: placement of all sutures 5 mm deep from the vaginal edge with a 5 mm interval, incorporation of the uterosacral ligaments with the pubocervical fascia at each angle, and, whenever possible, suturing the bladder peritoneum over the vaginal cuff edge utilizing two suture types of comparable tensile strength...
2016: Minimally Invasive Surgery
Hidenori Otsubo, Tomoaki Kamiya, Tomoyuki Suzuki, Miki Kuroda, Yasutoshi Ikeda, Takashi Matsumura, Toshihiko Yamashita
Rupture of the patellar tendon is an uncommon injury that requires acute surgical repair to restore the function of the knee. Multiple techniques for repair have been described in the literature. Complications with these repair techniques include rerupture and extensor lag caused by gap formation at the site of repair. Thus, many surgeons have suggested augmenting the standard repair. Several methods of augmentation have been described each with disadvantages. The purpose of this article was to present our case series of six patients with acute patella tendon ruptures treated by a novel procedure using strong sutures...
August 16, 2016: Journal of Knee Surgery
Toshinori Totsugawa
Here we demonstrate our surgical procedure of minimally invasive aortic valve replacement through right anterolateral mini-thoracotomy. Preoperative evaluation of the whole aorta by contrast-enhanced computed tomography scan is important to prevent cerebrovascular complications. The patient is set in a mild left lateral decubitus position. A skin incision is made along the anterior axillary line to the inframammary fold and the chest is opened at the 3rd or 4th intercostal space. Cardiopulmonary bypass is usually established by femoro-femoral bypass...
July 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
Ruchir Gupta, Nadia Sunny, Sabrina L Noyes, Mouafak Tourojman, Bikal Paka, Robert Bossemeyer, Brian R Lane
PURPOSE: To determine the functional life of various configurations of partial nephrectomy (PN) closure systems. MATERIALS AND METHODS: Sutures were prepared using standard techniques for sutured renorrhaphy during PN. Tested systems included Knot-Hem-o-Lok® (K-H), Lapra-Ty-Hem-o-Lok® (L-H), and Hem-o-Lok®-Hem-o-Lok® (H-H) combinations. The saline-filled tank was maintained at 37°C and sutures (Vicryl, Stratafix® PGA-PCL, V-Loc(TM)180) were suspended at 4N or 2N...
July 11, 2016: Journal of Urology
Gabriella E Ode, Dana P Piasecki, Nahir A Habet, Richard D Peindl
BACKGROUND: Patellar tendon ruptures require surgical repair to optimize outcomes, but no consensus exists regarding the ideal repair technique. Cortical button fixation is a secure method for tendon repair that has not been studied in patellar tendons. HYPOTHESIS: Cortical button repair is biomechanically superior to the standard transpatellar repair and biomechanically equivalent to suture anchor repair. STUDY DESIGN: Controlled laboratory study...
October 2016: American Journal of Sports Medicine
B Seitz, N Szentmáry, A Langenbucher, T Hager, A Viestenz, E Janunts, M El-Husseiny
For patients with keratoconus, rigid gas-permeable contact lenses are the first line correction method and allow good visual acuity for quite some time. In severe stages of the disease with major cone-shaped protrusion of the cornea, even specially designed keratoconus contact lenses are no longer tolerated. If there are contraindications for intrastromal ring segments, corneal transplantation typically has a very good prognosis. In patients with advanced keratoconus - especially after corneal hydrops due to rupture of Descemet's membrane - penetrating keratoplasty (PKP) is still the first line surgical method...
June 2016: Klinische Monatsblätter Für Augenheilkunde
Christopher L F Battersby, Nicholas J Battersby, Marianne Hollyman, John A Hunt
BACKGROUND: Double-gloving is endorsed by a number of healthcare authorities worldwide, on the basis that it promotes patient and surgeon safety; adoption of this practice amongst surgeons remains limited, based upon anecdotal reporting that double-gloving may compromise surgical technique due to impaired dexterity and sensation. The aim of this study is to formally investigate and demonstrate the effect of double-gloving upon the quality of knot tying, an essential surgical skill. METHODS: An international cohort of practising general surgeons hand tied surgical knots, under both single-gloved and double-gloved conditions, using monofilament and braided sutures, at two different gauges...
November 2016: World Journal of Surgery
Harry W Roberts, Nick J R Maycock, David P S OʼBrart
PURPOSE: To report a series of 4 cases (3 patients) with late stromal graft rejection 32 to 46 months after an uneventful deep anterior lamellar keratoplasty (DALK). METHODS: Three patients (4 eyes), who had undergone an uneventful DALK for keratoconus (3 eyes) and infectious keratitis (1 eye) 32 to 46 months previously presented with a history of ocular discomfort and redness, with reduced visual acuity in 3 eyes. In all cases, all sutures had been removed at least 18 months previously...
September 2016: Cornea
Tilahun Bekele, A P Bhokre, Abreha Tesfaye
AIM: This study was conducted to evaluate and compare the tissue reactivity and suture handling characteristics of chromic gut, silk, and 'jimat' suture materials in cat thigh muscle. MATERIALS AND METHODS: This experimental study was conducted from November, 2013 to April, 2014 in Kombolcha Animal Diseases Survey, Research and Diagnostic Laboratory, Kombolcha, Ethiopia. A total of 36 local breed male cats were randomly assigned into chromic gut, silk, and "jimat" groups of 12 cats each as A, B, and C, respectively...
August 2015: Veterinary World
Florence L Chiang, Chih-Kai Hong, Chih-Hsun Chang, Cheng-Li Lin, I-Ming Jou, Wei-Ren Su
PURPOSE: To compare the biomechanical characteristics of the subpectoral Y-knot all-suture anchor fixation with those of the interference screw technique. METHODS: Sixteen fresh-frozen human cadaveric shoulders with a mean age of 67.6 ± 5.8 years (range, 52 to 74 years) were studied. The specimens were randomly grouped into 2 experimental biceps tenodesis groups (n = 8): Y-knot all-suture anchor or interference screw. The specimens were cyclically tested to failure by applying tensile forces parallel to the longitudinal axis of the humerus...
July 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
Somsak Kuptniratsaikul, Pawin Weerawit, Kitiphong Kongrukgreatiyos, Trai Promsang
There are many types of sliding knots and suture materials used in arthroscopic surgery. The purposes of this study are (1) to evaluate the loop security of standard sliding knots when using different types of high-strength suture materials and (2) to compare the loop security of a new sliding knot (Chula knot) to other standard sliding knots. Four configurations of sliding locking knots (Weston, SMC, Tennessee and Chula knots) were tied using three commonly used suture materials: MagnumWire, Hi-Fi and FiberWire...
February 9, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
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