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Cannulated screws

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https://www.readbyqxmd.com/read/29349983/-treatment-of-posterior-cruciate-ligament-avulsion-fracture-with-rivet-assisted-hollow-nail-a-case-control-study
#1
Jia-Fu Zhu, Gou-Ping Ma, Wei-Xing Xu, Qiao-Feng Guo, Hong Liu
OBJECTIVE: To retrospectively investigate the clinical effect of the rivet-assisted hollow screw in the treatment of posterior cruciate ligament avulsion fracture. METHODS: Total 49 patients with knee cruciate ligament avulsion fracture in the ending point of the ligament from January 2010 to December 2014 were divided into the treatment group and the control group. Thirty-one patients in treatment group were treated with rivet-assisted double cannulate nail, including 13 males and 18 females, ranging in age from 38 to 51 years old, with a mean of (40...
April 25, 2017: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/29320924/a-model-to-evaluate-pauwels-type-iii-femoral-neck-fractures
#2
Kevin M Magone, Jonas K Owen, Bernard P Kemker, Oliver Bloom, Sidney Martin, Patrick Atkinson
While many femoral neck fractures can be reliably treated with surgical intervention, Pauwels III femoral neck fractures in the young adult population continue to be a challenging injury, and there is no consensus on optimal treatment. As such, there are past and ongoing biomechanical studies to evaluate the fixation provided by different constructs for this inherently unstable fracture. While many investigations rely on cadavers to evaluate the biomechanical performance of a construct, significant inter-subject variability can confound the analysis...
January 1, 2018: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29310670/the-comparison-of-clinical-outcome-of-fresh-type-ii-odontoid-fracture-treatment-between-anterior-cannulated-screws-fixation-and-posterior-instrumentation-of-c1-2-without-fusion-a-retrospective-cohort-study
#3
Suomao Yuan, Bin Wei, Yonghao Tian, Jun Yan, Wanlong Xu, Lianlei Wang, Xinyu Liu
BACKGROUND: Recently, the excellent outcomes of temporary fixation of C1-2 without fusion in the treatment of odontoid fracture had been reported. It is still unclear if this technique could achieve the equivalent outcomes as the golden standard technique of anterior screw fixation. The objective of this study is to compare the clinical outcome of two treatments of fresh type II odontoid fracture: anterior cannulated screws fixation (ACSF) versus posterior instrumentation of C1-2 without fusion (PIWF)...
January 8, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29276535/influence-of-screw-type-and-length-on-fixation-of-anterior-glenoid-bone-grafts
#4
Laurent B Willemot, Ross Wodicka, Adrian Bosworth, Alessandro Castagna, Joseph Burns, Olivier Verborgt
Background: Bone-grafting procedures for recurrent shoulder instability produce low recurrence rates, although they are associated with complications such as graft non-union. Inadequate screw purchase is considered to play a causative role. However, excessive screw length can endanger neurovascular structures. The present study aimed to investigate how type and length of screws influences construct rigidity in a simplified glenoid model. Methods: Testing was performed on composite polyurethane foam models with material properties and abstract dimensions of a deficient glenoid and an bone graft...
January 2018: Shoulder & Elbow
https://www.readbyqxmd.com/read/29274862/percutaneous-minimally-invasive-repair-of-acromioclavicular-joint-dislocation-using-cannulated-screws-under-ultrasonic-vs-c-arm-navigation-a-prospective-trial
#5
X Shui, S Chen, G Huang, J Kong, C Zhou, W Lin
INTRODUCTION: To compare percutaneous minimally invasive repair (PMIR) of acute acromioclavicular (AC) joint dislocation under ultrasound guidance (PMIR-UN) vs. C-arm navigation (PMIR-CN). HYPOTHESIS: PMIR-UN has similar functional and radiographic outcomes as PMIR-CN. MATERIALS AND METHODS: We treated 48 patients with acute grade III or V AC joint dislocation with surgical reduction and fixation with Kirschner wires and cannulated screws...
December 21, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29229541/results-of-percutaneous-fixation-and-distal-radius-core-decompression-in-scaphoid-waist-non-unions-treated-without-grafting
#6
S S Dedeoğlu, Y İmren, H Çabuk, A C Tekin, Y C Türe, H Gürbüz
Scaphoid non-union management is still a challenge in clinical practice for orthopaedic surgeons. Though several treatment methods have been described, there is an ongoing debate about optimum management. Based on new concepts about avascular conditions, promising results were reported with metaphyseal decompression of the distal radius by increasing the vascularization of the radial column of the carpus. We aimed to evaluate the clinical, radiological, and functional outcomes of distal radius core decompression and fixation with palmar percutaneous cannulated compression screws without grafting in patients with scaphoid waist fracture non-union...
December 8, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/29215500/feasibility-and-accuracy-of-thoracolumbar-minimally-invasive-pedicle-screw-placement-with-augmented-reality-navigation-technology
#7
Adrian Elmi-Terander, Rami Nachabe, Halldor Skulason, Kyrre Pedersen, Michael Söderman, John Racadio, Drazenko Babic, Paul Gerdhem, Erik Edström
STUDY DESIGN: Cadaveric laboratory study. OBJECTIVE: To assess the feasibility and accuracy of minimally invasive thoracolumbar pedicle screw placement using augmented reality (AR) surgical navigation SUMMARY OF BACKGROUND DATA.: Minimally invasive spine (MIS) surgery has increasingly become the method of choice for a wide variety of spine pathologies. Navigation technology based on AR has been shown to be feasible, accurate and safe in open procedures. AR technology may also be used for MIS surgery...
December 19, 2017: Spine
https://www.readbyqxmd.com/read/29201305/biomechanical-comparison-study-of-three-fixation-methods-for-proximal-chevron-osteotomy-of-the-first-metatarsal-in-hallux-valgus
#8
Jin Su Kim, Hun Ki Cho, Ki Won Young, Ji Soo Kim, Kyung Tai Lee
Background: Fixation of proximal chevron metatarsal osteotomy has been accomplished using K-wires traditionally and with a locking plate recently. However, both methods have many disadvantages. Hence, we developed an intramedullary fixation technique using headless cannulated screws and conducted a biomechanical study to evaluate the superiority of the technique to K-wire and locking plate fixations. Methods: Proximal chevron metatarsal osteotomy was performed on 30 synthetic metatarsal models using three fixation techniques...
December 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/29192879/pedicle-screw-placement-accuracy-using-ultra-low-radiation-imaging-with-image-enhancement-versus-conventional-fluoroscopy-in-minimally-invasive-transforaminal-lumbar-interbody-fusion-an-internally-randomized-controlled-trial
#9
Gautam Nayar, Daniel J Blizzard, Timothy Y Wang, Steven Cook, Adam G Back, David Vincent, Isaac O Karikari
OBJECTIVE A previous study found that ultra-low radiation imaging (ULRI) with image enhancement significantly decreases radiation exposure by roughly 75% for both the patient and operating room personnel during minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) (p < 0.001). However, no clinical data exist on whether this imaging modality negatively impacts patient outcomes. Thus, the goal of this randomized controlled trial was to assess pedicle screw placement accuracy with ULRI with image enhancement compared with conventional, standard-dose fluoroscopy for patients undergoing single-level MIS-TLIF...
December 1, 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29185046/functional-outcomes-after-removal-of-hardware-in-patellar-fracture-are-we-helping-our-patients
#10
Arieh Greenberg, Assaf Kadar, Michael Drexler, Zachary T Sharfman, Ofir Chechik, Ely L Steinberg, Nimrod Snir
PURPOSE: Functional outcomes after Open Reduction Internal Fixation (ORIF) of the patella are variable. Common complications of patella ORIF include persistent anterior knee pain, limited range of motion and symptomatic hardware. The purpose of this study was to evaluate if removal of hardware is beneficial to symptomatic patients after patellar fracture fixation. METHODS: Patients who presented to our institution between December 2006 and November 2014 with patella fractures treated with ORIF were eligible for inclusion...
November 28, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29182119/ia-comparison-of-two-minimally-invasive-procedures-for-intra-articular-displaced-calcaneal-fractures-in-older-children
#11
D Lu, S-Y Zhu, J Yang, H Chen, L-J Sun
The purpose of this study was to compare the clinical outcomes of displaced intra-articular calcaneal fractures in older children treated with poking reduction and cannulated screws fixation or with plate fixation using a sinus tarsi approach. From June 2008 to May 2012, fifty patients were randomised to operative stabilisation either by poking reduction and cannulated screws fixation (Group A, 28) or by plates fixation using a sinus tarsi approach (Group B, 22). The two groups were comparable with respect to age, gender, BMI, the affected side, cause of injury, fracture type, time from injury to surgery and follow-up time...
December 2016: Acta Orthopaedica Belgica
https://www.readbyqxmd.com/read/29181361/insufficiency-fractures-at-unusual-sites-a-case-series
#12
Raju Vaishya, Amit Kumar Agarwal, Paras Kumar Banka, Vipul Vijay, Abhishek Vaish
Introduction: Insufficiency fractures (IFs) are a subtype of stress fractures commonly associated with osteoporosis and Vitamin D deficiency. These nontraumatic fractures often occur in the pelvis and spine, but the involvement of other unusual sites is also not very uncommon. Plain radiographs and magnetic resonance imaging scan are the most commonly used imaging modalities for the diagnosis of IF. Case Report: We are presenting a series of five cases of IFs at unusual sites, along with a detailed literature review on this individual...
July 2017: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/29153287/avulsion-fracture-of-the-calcaneal-tuberosity-case-report-and-literature-review
#13
Thomas Rauer, Reto Twerenbold, Roman Flückiger, Valentin Neuhaus
Avulsion fractures of the calcaneal tuberosity are predominantly seen in patients with poor bone quality, the commonly used lag screw fixation might not be strong enough even with bony fragments of sufficient size. We present a case of a closed displaced avulsion fracture of the calcaneal tuberosity due to blunt trauma to the calf in a 74-year-old female. Open reduction and internal fixation with two 3.5-mm cannulated cortical screws with washers was performed, and anatomic reduction was achieved. Without further trauma, secondary displacement of the fracture occurred on day 3...
November 15, 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29114187/use-of-fibular-bone-graft-and-cancellous-screw-fixation-in-the-management-of-neglected-femur-neck-fractures-in-young-patients
#14
Ghulam Mustafa Kaim Khani, Kamran Hafeez, Muhammad Bux, Nusrat Rasheed, Naveed Ahmed, M Perwez Anjum
Objective: To present the clinical outcome of patients with neglected femur neck fracture treated with fibular bone graft. Methods: During May 2010-February 2013, 15 patients younger than 35 years of age with neglected fracture neck of femur were managed with non-vascularized fibular graft and cannulated screws. Fractures were classified according to Sandhu Classification. Hip function was assessed using Harris hip score. Results: Fifteen patients with mean age of 28...
November 2017: International Journal of Health Sciences
https://www.readbyqxmd.com/read/29096123/in-vitro-validation-of-a-novel-mechanical-model-for-testing-the-anchorage-capacity-of-pedicle-screws-using-physiological-load-application
#15
Christian Liebsch, Julia Zimmermann, Nicolas Graf, Christoph Schilling, Hans-Joachim Wilke, Annette Kienle
Biomechanical in vitro tests analysing screw loosening often include high standard deviations caused by high variabilities in bone mineral density and pedicle geometry, whereas standardized mechanical models made of PU foam often do not integrate anatomical or physiological boundary conditions. The purpose of this study was to develop a most realistic mechanical model for the standardized and reproducible testing of pedicle screws regarding the resistance against screw loosening and the holding force as well as to validate this model by in vitro experiments...
October 25, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29079233/posterolateral-approach-with-buttress-plates-and-cannulated-screw-fixation-for-large-posterior-malleolus-fractures
#16
Qiang Zhou, Hua Lu, Zhanchao Wang, Siming Yu, Haojie Zhang
The present study retrospectively reviewed the clinical efficacy of open reduction and internal fixation with buttress plates and cannulated screws via a posterolateral approach for the treatment of large posterior malleolus fractures. From July 2009 to April 2012, 34 patients (15 males and 19 females; mean age 41.2 years) with posterior malleolus fractures involving >25% of the distal articular tibia, were treated by cannulated screw and buttress plate fixation. All the patients were followed for ≥24 months...
November 2017: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29073772/radiographic-results-of-nitinol-compression-staples-for-hindfoot-and-midfoot-arthrodeses
#17
Oliver N Schipper, Samuel E Ford, Patrick W Moody, Bryce Van Doren, J Kent Ellington
BACKGROUND: The purpose of this study was to determine the radiographic union rate after midfoot and hindfoot arthrodeses using a new generation of nitinol staples, and to compare outcomes between a nitinol staple construct and a nitinol staple and threaded compression screw construct. METHODS: A retrospective chart review was performed to identify patients who underwent hindfoot or midfoot arthrodesis using a new generation of nitinol compression staples with or without a partially threaded cannulated screw with minimum 3-month radiographic follow-up...
October 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/29052742/-triple-arthrodesis-for-correction-of-cavovarus-deformity
#18
REVIEW
A Barg, R Ruiz, B Hintermann
OBJECTIVE: The aim is to correct the underlying cavovarus deformity and to achieve a pain-free and stable hindfoot. INDICATIONS: Rigid neurologic, posttraumatic, congenital, and idiopathic cavovarus deformities. CONTRAINDICATIONS: General surgical or anesthesiological risks, infections, critical soft tissue conditions, neurovascular impairment of the lower extremity, noncompliance, patients with severely reduced bone quality, insulin-dependent diabetes mellitus, smoking...
October 20, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/29051899/surgical-treatment-of-segond-fractures-in-acute-anterior-cruciate-ligament-reconstruction
#19
Andrea Ferretti, Edoardo Monaco, Megan Rianne Wolf, Matteo Guzzini, Angelo De Carli, Daniele Mazza
BACKGROUND: The Segond fracture is an avulsion-type fracture located on the anterolateral aspect of the tibia associated with a ligament recently termed the anterolateral ligament. This injury has been described as pathognomonic for an anterior cruciate ligament (ACL) tear and is associated with a higher grade pivot shift. PURPOSE: To present and report 2-year clinical outcomes of a surgical technique for acute ACL reconstruction with fixation of a concomitant Segond fracture...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29022057/multiple-cannulated-screws-vs-dynamic-hip-screws-for-femoral-neck-fractures-a%C3%A2-meta-analysis
#20
Lei Lei Zhang, Ying Zhang, Xianghao Ma, Youwen Liu
OBJECTIVE: Various fixation devices have been reported for stabilization of femoral neck fractures. Numerous studies on arthroplasty versus internal fixation devices in the treatment of femoral neck fractures have been performed, but the optimal approach for internal fixation has not been analyzed. METHODS: A meta-analysis and system evaluation were performed to compare clinical effects. We searched PubMed, Embase, Cochrane Library, and Web of Science(TM) for randomized, controlled trials (RCTs) comparing multiple cannulated screws (MCS) with dynamic hip screws (DHS) and analyzed the failure rate of operations, the reoperation rate, and postoperative complications...
November 2017: Der Orthopäde
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