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Cannulated screws

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https://www.readbyqxmd.com/read/28633152/state-of-pelvic-and-acetabular-surgery-in-the-developing-world-a-global-survey-of-orthopaedic-surgeons-at-surgical-implant-generation-network-sign-hospitals
#1
Paul S Whiting, Duane R Anderson, Daniel D Galat, Lewis G Zirkle, Douglas W Lundy, Hassan R Mir
OBJECTIVES: To document the current state of pelvic and acetabular surgery in the developing world and to identify critical areas for improvement in the treatment of these complex injuries. DESIGN: A 50-question online survey. SETTING: International, multicenter. PATIENTS/PARTICIPANTS: One hundred eighty-one orthopaedic surgeons at Surgical Implant Generation Network (SIGN) hospitals, which represent a cross-section of institutions in low- and middle-income countries that treat high-energy musculoskeletal trauma...
July 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28632658/the-retrograde-antegrade-retrograde-technique-for-successful-placement-of-a-retrograde-superior-ramus-screw
#2
David J Weatherby, Milton L Chip Routt, Jonathan G Eastman
Stabilization of pelvic ring injuries and certain acetabular fractures using percutaneous techniques is becoming increasingly more common. Intramedullary superior ramus screw fixation is beneficial in both injury types. While implants can be placed in an antegrade or retrograde direction, parasymphyseal ramus fractures benefit from retrograde implant insertion. In some patients, the parabolic osseous anatomy or obstructing soft tissues of the anterior pelvis or thigh can prevent appropriate hand and instrumentation positioning for appropriate retrograde ramus screw insertion through the entire osseous fixation pathway...
July 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28622833/biomechanical-evaluation-of-the-tension-band-wiring-principle-a-comparison-between-two-different-techniques-for-transverse-patella-fracture-fixation
#3
Ivan Zderic, Karl Stoffel, Christoph Sommer, Dankward Höntzsch, Boyko Gueorguiev
PURPOSE: The aim of this study was to investigate the validity of the dynamic compression principle of tension band wiring in two techniques for patella fracture treatment. METHODS: Twelve human cadaveric knees with simulated transverse patella fractures were assigned to two groups for treatment with tension band wiring using either Kirschner (K-) wires or cannulated screws. Biomechanical testing was performed over three knee movement cycles between 90° flexion and 0° full extension...
May 29, 2017: Injury
https://www.readbyqxmd.com/read/28611963/pelvic-insufficiency-fracture-in-severe-osteoporosis-patient
#4
Woong Chae Na, Sang Hong Lee, Sung Jung, Hyun Woong Jang, Suenghwan Jo
PURPOSE: To evaluate clinical features and the effect of parathyroid hormone (PTH) on treatment outcomes of patients with pelvic insufficiency fractures. MATERIALS AND METHODS: Fifteen patients diagnosed with pelvic insufficiency fractures were evaluated retrospectively. All patients had osteoporosis with mean lumbar T score of -3.9 (range, -3.1 to -6.4) and the mean age was 76.5 years. In all cases, simple radiography and computed tomography was used for final diagnosis; additional magnetic resonance imaging and technetium bone scans were used to confirm the diagnosis in 2 and 6 patients, respectively...
June 2017: Hip & Pelvis
https://www.readbyqxmd.com/read/28606254/-internal-fixation-and-hemiarthroplasty-for-the-treatment-of-displaced-femoral-neck-fracture-a-cost-utility-analysis
#5
B Xu, Q Wang, H Jin, J X Li, H N Liu, Y J Mao, J Wei
Objective: To compare the cannulated screw internal fixation (IF) and hemiarthroplasty (HA) for displaced femoral neck fracture with cost-utility analysis (CUA). Methods: From January 2014 to August 2015, a total of 87 patients above 60 years old with displaced femoral neck fracture were admitted into the study and divided into 2 groups according to surgery type. There were 41 cases in IF group and 46 cases in HA group. During 1 year follow-up we collected the total cost due to fracture and applied EQ-5D index to evaluate the clinical effects...
June 6, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/28577891/treatment-of-posterior-cruciate-ligament-tibial-avulsion-by-a-minimally-invasive-open-posterior-approach
#6
Ahmed Abdelbadie Abdallah, Mohammed S Arafa
OBJECTIVE: To assess the surgical technique and report the outcomes following fixation of PCL bony avulsions through mini-invasive posterior knee approach as described by Burks and Schaffer. METHODS: From June 2012 to July 2015, 27 patients enrolled in the study (21 males and 6 females). Fixation of tibial PCL avulsion fractures was done with one or two cannulated screws, or sutures through Burks and Schaffer's approach. The mean interval before surgery was 16days (1-70) ...
May 26, 2017: Injury
https://www.readbyqxmd.com/read/28529660/biomechanical-considerations-in-slipped-capital-femoral-epiphysis-and-insights-into-prophylactic-fixation
#7
E Leblanc, J M Bellemore, T Cheng, D G Little, O Birke
PURPOSE: Slipped capital femoral epiphysis (SCFE) is a deformity of the proximal femur secondary to widened and unstable physis. In stabilising the slip, gold standard treatments stop growth and involve premature physeal closure, which prevents the remodelling of the acquired deformity and creates a leg length discrepancy that may be significant in younger patients. METHODS: We measured the impact of placing threaded screws across the proximal femoral physis by measuring the centre-trochanteric distance (CTD) and articulo-trochanteric distance (ATD) in participants with or without prophylactic fixation...
April 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28523087/assessment-of-fixation-of-mandibular-interforaminal-fractures-by-using-a-single-second-generation-headless-compression-screw-a-pilot-study
#8
Rangila Ram, Razi Ahsan, Yogesh Bhardwaj, Narotam Ghezta, Santosh Kumar
The aim of this article is to evaluate the efficacy of a single second-generation headless compression screw along with a lower arch bar in the fixation of interforaminal mandible fractures. A total of seven patients were included in the study. An open approach was used either intraorally or extraorally. A second-generation 3.0 HCS (headless compression screw), 24 to 32 mm in length, diameter at the head of 3.5 mm, smooth shaft with 2.0 mm and at the leading edge 3.0 mm (Synthes, Paoli, PA) was used for the fixation along with a lower arch bar...
June 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28520623/the-sub-crestal-iliac-screw-a-technical-note-describing-a-free-hand-in-line-low-profile-iliac-screw-insertion-technique-to-avoid-side-connector-use-and-reduce-implant-complications
#9
Gabriel Liu, Muhammed Yaser Hasan, Hee-Kit Wong
STUDY-DESIGN: Case-series. OBJECTIVE: Report our modified iliac-screw insertion technique and its clinical outcomes. SUMMARY OF BACKGROUND DATA: Iliac-screws are one of the preferred methods for modern spinopelvic-fixation. However the technique is not without complications, predominantly due to iliac-screw head prominence, leading to pain and revisions. Conventional iliac-screw entry point is sited superficially at the posterior-superior-iliac-spine (PSIS) contributing to screw-head prominence...
May 17, 2017: Spine
https://www.readbyqxmd.com/read/28511967/a-sliding-hip-screw-augmented-with-2-screws-is-biomechanically-similar-to-an-inverted-triad-of-cannulated-screws-in-repair-of-a-pauwels-type-iii-fracture
#10
B Kemker, K Magone, J Owen, P Atkinson, S Martin, T Atkinson
OBJECTIVE: Pauwels III femoral neck fractures are highly unstable. These fractures are commonly treated with three cannulated screws or sliding hip screw (SHS) implants, however high rates of non-union persist. A hybrid SHS construct has recently been proposed. The objective of the study was to compare this construct to the familiar inverted triad of cannulated screws and to a single SHS. METHODS: Fourth generation biomechanical femur analogs were used to create a highly repeatable injury model...
May 8, 2017: Injury
https://www.readbyqxmd.com/read/28507975/charcot-fracture-in-the-calcaneus-after-total-knee-arthroplasty-a-case-report
#11
Hirokazu Takai, Katsuhiko Kiyota, Nobutake Nakane, Tomoki Takahashi
INTRODUCTION: Only a few reports have described calcaneus fractures after total knee arthroplasty (TKA). Therefore, in this report, we describe a case of calcaneal avulsion fracture that occurred 5 weeks after a TKA in a relatively young male patient with syphilis. CASE REPORT: A 63-year-old man with syphilis had Charcot joint of the right knee. The patient developed severe varus deformity and contracture and experienced severe pain in the knee. TKA was performed to alleviate the pain and improve the patient's gait...
November 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28497280/a-minimal-soft-tissue-damage-approach-of-spondylolysis-repair-in-athletes-preliminary-report
#12
Łukasz Bartochowski, Wojciech Jurasz, Jacek Kruczyński
PURPOSE AND HYPOTHESIS: Both spondylolysis and spondylolisthesis come in second place in the causes of pain among athletes. Treatment options include both conservative management and different operative methods. Athletes and adolescents are groups where the priority is to protect tissues from perioperative damage. OBJECTIVE: We present our modification of the Buck's, direct pars repair method, which we believe offers maximum protection of tissues. We used the modified surgical method in young, competitive athletes, in whom non-surgical treatment was not effective...
May 11, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28493039/complications-after-surgical-treatment-of-femoral-neck-fractures-in-men-with-alcohol-dependence-syndrome-retrospective-register-analysis-of-154-cases
#13
Jussi Kosola, Antti Kaipia, Minna K Laitinen, Jyrki Nieminen
PURPOSE: One-third of hip fractures occur in men. The causes underlying hip fractures in men differ from those in women and include alcohol abuse. This retrospective register study evaluated the trends and results associated with different surgical treatment methods for nondisplaced and displaced femoral neck fractures in male patients with alcohol dependence syndrome. METHODS: Men with hip fractures were identified from a local district hospital database. Alcohol dependence syndrome was identified as a diagnosis in medical records...
May 10, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28490878/a-novel-injectable-calcium-phosphate-based-nanocomposite-for-the-augmentation-of-cannulated-pedicle-screw-fixation
#14
Haolin Sun, Chun Liu, Huiling Liu, Yanjie Bai, Zheng Zhang, Xuwen Li, Chunde Li, Huilin Yang, Lei Yang
Polymethyl methacrylate (PMMA)-augmented cannulated pedicle-screw fixation has been routinely performed for the surgical treatment of lumbar degenerative diseases. Despite its satisfactory clinical outcomes and prevalence, problems and complications associated with high-strength, stiff, and nondegradable PMMA have largely hindered the long-term efficacy and safety of pedicle-screw fixation in osteoporotic patients. To meet the unmet need for better bone cement for cannulated pedicle-screw fixation, a new injectable and biodegradable nanocomposite that was the first of its kind was designed and developed in the present study...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28479162/comparison-of-the-outcomes-between-headless-cannulated-screw-fixation-and-fixation-using-a-locking-compression-distal-ulna-hook-plate-in-fracture-of-fifth-metatarsal-base
#15
Jun-Beom Kim, In-Soo Song, Byeong-Seop Park, Chi-Hoon Ahn, Cheol-U Kim
The aim of the present study was to evaluate and compare the clinical and radiologic results of internal fixation with a headless cannulated screw versus a locking compression distal ulna hook plate for fractures at the base of the fifth metatarsal bone, zone 1. From April 2012 to April 2015, 30 cases (29 patients) were retrospectively evaluated. The mean follow-up period was 13 months. The patients were divided into 2 groups stratified by the fixation method: screw (group A, n = 15) or plate (group B, n = 15)...
July 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/28471920/vertically-oriented-femoral-neck-fractures-a-biomechanical-comparison-of-3-fixation-constructs
#16
Joey P Johnson, Todd R Borenstein, Gregory R Waryasz, Stephen A Klinge, Philip K McClure, Alison B Chambers, Roman A Hayda, Christopher T Born
OBJECTIVES: To compare the static and dynamic mechanical properties of a modified crossed cannulated screw (CS) configuration, the inverted triangle (IT) cannulated screw configuration, and a compression hip screw (CHS) with derotation screw in Pauwels type III femoral neck fractures. METHODS: Thirty synthetic femora were divided into 3 groups, and vertical femoral neck osteotomies were made. Ten osteotomized femora were fixed with a CS configuration, 10 were fixed with 3 parallel screws in an IT configuration, and the remaining 10 osteotomized femora were fixed with a CHS construct...
July 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28460872/fixation-of-fractures-of-the-condylar-head-of-the-mandible-with-a-new-magnesium-alloy-biodegradable-cannulated-headless-bone-screw
#17
H Leonhardt, A Franke, N M H McLeod, G Lauer, A Nowak
It is difficult to fix fractures of the condylar head of the mandible. Several techniques have been described which show satisfactory outcomes, but stability can be questionable, and some can cause irritation of the soft tissues. We describe a technique and first results of treating such fractures with resorbable magnesium-based headless bone screws (Magnezix(®) 2.7mm CS; Syntellix AG, Hanover, Germany).
July 2017: British Journal of Oral & Maxillofacial Surgery
https://www.readbyqxmd.com/read/28460835/a-chronic-in-situ-coil-system-adapted-for-intracerebral-stimulation-during-mri-in-rats
#18
Dan Madularu, Chathura Kumaragamage, Axel P Mathieu, Praveen Kulkarni, M Natasha Rajah, Alain P Gratton, Jamie Near
BACKGROUND: We describe the fabrication and performance of a chronic in situ coil system designed to allow focal brain stimulation in rats while acquiring functional MRI data. NEW METHOD: An implantable receive-only surface radiofrequency coil (iCoil) was designed to be fitted subcutaneously, directly onto to the rat skull surface during the intracerebral cannulation procedure. The coil is fixed in place using acrylic dental cement anchored to four screws threaded into the skull...
June 1, 2017: Journal of Neuroscience Methods
https://www.readbyqxmd.com/read/28459421/comparison-of-fatigue-performance-between-fully-and-partially-threaded-cannulated-screws-used-for-stabilization-of-slipped-capital-femoral-epiphyses
#19
Stephen Stacey, William Barfield, Luke Pietrykowski, John DesJardins, James Mooney
Cannulated screws are widely used for the treatment of slipped capital femoral epiphysis; however, the optimal choice and number of implants have not been clearly defined. Studies have shown that two screws are biomechanically superior to a single screw in load-to-failure testing, but the fatigue performance of different screw designs has not been investigated. This study compared the fatigue characteristics of fully and partially threaded cannulated screws. Partially and fully threaded 7.3-mm screws were subjected to cyclic loading on a custom testing fixture...
2017: Journal of Surgical Orthopaedic Advances
https://www.readbyqxmd.com/read/28443251/partial-heel-pad-avulsion-with-open-calcaneal-tuberosity-fracture-with-tendo-achilles-rupture-a-case-report
#20
Shameem Ahmed, Syed Ifthekar, R Pathan Rameez Ahmed Khan, Rahul Ranjan
INTRODUCTION: The management of heel pad avulsion injuries has been challenging because of the precarious blood supply. The difficulties get compounded when it is associated with tendo-achilles rupture and calcaneal fracture. Here, it is a description of a case with the above features managed with a unique technique. CASE REPORT: A 63-year-old woman presented to casualty with injury to right ankle after a road traffic accident. On clinical and radiological examination, there was avulsion of heel pad with calcaneal tuberosity fracture and tendo-achilles rupture...
September 2016: Journal of Orthopaedic Case Reports
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