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Cannulated screws

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https://www.readbyqxmd.com/read/28207655/internally-randomized-control-trial-of-radiation-exposure-using-ultra-low-radiation-imaging-versus-traditional-c-arm-fluoroscopy-for-patients-undergoing-single-level-minimally-invasive-transforaminal-lumbar-interbody-fusion
#1
Timothy Y Wang, S Harrison Farber, Scott S Perkins, Adam G Back, Sarah A Byrd, Debbie Chi, David Vincent, Isaac O Karikari
STUDY DESIGN: Randomized controlled trial. OBJECTIVE: To compare radiation exposure between ultra-low radiation imaging (ULRI) with image enhancement and standard-dose fluoroscopy for patients undergoing minimally invasive transforaminal lumbar interbody fusion (MIS TLIF). SUMMARY OF BACKGROUND DATA: Although the benefits of MIS are lauded by many, there is a significant amount of radiation exposure to surgeon and operating room personnel...
February 15, 2017: Spine
https://www.readbyqxmd.com/read/28205482/trans-metacarpal-screw-fixation-for-extra-articular-proximal-phalangeal-base-fractures
#2
Eichi Itadera, Takahiro Yamazaki
We developed a new internal fixation method for extra-articular fractures at the base of the proximal phalanx using a headless compression screw to achieve rigid fracture fixation through a relatively easy technique. With the metacarpophalangeal joint of the involved finger flexed, a smooth guide-pin is inserted into the intramedullary canal of the proximal phalanx through the metacarpal head and metacarpophalangeal joint. Insertion tunnels are made over the guide-pin using a cannulated drill. Then, a headless cannulated screw is placed into the proximal phalanx...
March 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28161230/-slipped-capital-femoral-epiphysis
#3
C Klein, E Haraux, J Leroux, R Gouron
Slipped capital femoral epiphysis (SFCE) is a disorder of the hip, characterized by a displacement of the capital femoral epiphysis from the metaphysic through the femoral growth plate. The epiphysis slips posteriorly and inferiorly. SCFE occurs during puberty and metabolic and epidemiologic risk factors, such as obesity are frequently found. Most chronic slips are diagnosed late. Sagittal hip X-rays show epiphysis slip. In case of untreated SCFE, a slip progression arises with an acute slip risk. Treatment is indicated to prevent slip worsening...
February 1, 2017: Archives de Pédiatrie: Organe Officiel de la Sociéte Française de Pédiatrie
https://www.readbyqxmd.com/read/28149208/comparison-of-dorsal-plate-fixation-versus-intramedullary-headless-screw-fixation-of-unstable-metacarpal-shaft-fractures-a-biomechanical-study
#4
Eitan Melamed, Richard M Hinds, Michael B Gottschalk, Oran D Kennedy, John T Capo
Background: Recently, intramedullary headless screw (IMHS) has shown promise as an alternative to dorsal plate fixation of metacarpal fractures. The purpose of this study was to assess the biomechanical performance of IMHS versus plating. We hypothesized that IMHS fixation provides inferior stability to plating. Methods: Metacarpal fracture model with 3-mm of volar gapping in forty-four human cadaveric metacarpals was created. The specimens were divided into 5 groups: Group 1, 1.5-mm non-locking plate; Group 2, 1...
December 2016: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28143515/modified-minimally-invasive-extensor-carpi-radialis-longus-tenodesis-for-scapholunate-dissociation-a-prospective-observational-study
#5
Alexander Kaltenborn, Sebastian Hoffmann, Andreas Settje, Peter M Vogt, André Gutcke, Mike Rüttermann
BACKGROUND: Scapholunate dissociation is the most common form of carpal instability. However, there is no gold standard for operative treatment. In this prospective observational study on 54 patients, a modified minimally invasive dynamic extensor carpi radialis longus tenodesis is described, which is characterized by a smaller approach and application of a cannulated screw and washer for tendon fixation. METHODS: Quick-Disabilities of Arm, Shoulder and Hand (DASH)-questionnaire results, post-operative satisfaction, range of motion and grip strength are analyzed...
January 31, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28142348/arthroscopic-fixation-of-the-clavicle-shaft-fracture
#6
Yang-Soo Kim, Hyo-Jin Lee, Jong-Ick Kim, Hyo Yang, Hong-Ki Jin, Hiren Kirtibhai Patel, Jong-Ho Kim, In Park
This article describes an arthroscopic technique for the fixation of clavicle shaft fractures. A viewing portal is made 2 cm anterior to the fracture site, and a working portal is made 2 cm lateral to the fracture site. The guide wire for a 4.0-mm cannulated screw is inserted through the fracture site to the medial fracture fragment under arthroscopic guidance. Through the medial fragment, the guide wire is delivered through the skin anteriorly. The fracture is reduced, and then, the guide wire is drilled back across the fracture site to the lateral fracture fragment...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28119794/the-oblique-metaphyseal-shortening-osteotomy-of-the-distal-ulna-surgical-technique-and-results-of-ten-patients
#7
Szabolcs Benis, Jean F Goubau, Koen Mermuys, Petrus Van Hoonacker, Bart Berghs, Diederick Kerckhove, Bert Vanmierlo
Background Ulnocarpal abutment is a common condition following distal radius fractures. There are different surgical methods of treatment for this pathology: open and arthroscopic wafer procedure or an ulnar shortening osteotomy. We describe an oblique metaphyseal shortening osteotomy of the distal ulna using two cannulated headless compression screws. We report the results of 10 patients treated with this method. Materials and Methods Out of 17 patients, 10 could be reviewed retrospectively for this study...
February 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28116275/an-unusual-case-of-simultaneous-bilateral-neck-of-femur-fracture-following-electrocution-injury-a-case-report-and-review-of-literature
#8
Supreeth Nekkanti, Vijay C, Sujana Theja Js, RaviShankar R, Sumit Raj
INTRODUCTION: Simultaneous bilateral fractures of the neck of femur is rare. Hypocalcemia, epilepsy, osteoporosis and electrical injuries are known to cause similar injuries. CASE REPORT: We report a case of a 43-year-old male who sustained an electrical shock injury following which he fell from a height of around 4 feet. Radiological studies confirmed bilateral transcervical neck of femur fracture. Laboratory investigations revealed the patient had extremely low levels of vitamin D (11...
July 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/28101590/-minimally-invasive-treatment-of-intra-articular-calcaneal-fractures-with-the-2%C3%A2-point-distractor
#9
G Mattiassich, W Litzlbauer, M Ponschab, R Ortmaier, C Rodemund
OBJECTIVE: Open treatment of calcaneus fractures often has an increased risk of wound healing. Minimally invasive treatment with small incisions reduces complications. INDICATIONS: Calcaneal fractures with malalignment/comminution >1-2 mm; broadening, varus alignment of the calcaneal length axis or shortening; emergency surgery for open fractures or compartment syndrome. CONTRAINDICATIONS: Local or general contraindications. SURGICAL TECHNIQUE: Standardised positioning; restoration of length/axis with 2‑point distractor under fluoroscopic control...
January 18, 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28095870/comparison-of-compressive-forces-caused-by-various-cannulated-cancellous-screws-used-in-arthroscopic-ankle-arthrodesis
#10
Satoshi Kamijo, Tsukasa Kumai, Shogo Tanaka, Tsuyoshi Mano, Yasuhito Tanaka
BACKGROUND: When performing arthroscopic ankle arthrodesis for end-stage ankle arthritis, internal fixation is performed using bone screws after appropriate preparation. However, optimal characteristics of bone screws have not been examined in terms of pressure force. Objective comparisons of bone-screw performance may provide information on procedures for arthroscopic ankle arthrodesis. The study objectives were to determine whether it was possible to measure compressive force changes using the newly developed device and to infer all screw characteristics from measurement results when used in actual surgeries...
January 17, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28095741/pullout-performance-comparison-of-novel-expandable-pedicle-screw-with-expandable-poly-ether-ether-ketone-shells-and-cement-augmented-pedicle-screws
#11
Mehmet Fatih Aycan, Tolga Tolunay, Teyfik Demir, Mesut Emre Yaman, Yusuf Usta
Aim of this study is to assess the pullout performance of various pedicle screws in different test materials. Polyurethane foams (Grade 10 and Grade 40) produced in laboratory and bovine vertebrae were instrumented with normal, cannulated (cemented), novel expandable and normal (cemented) pedicle screws. Test samples were prepared according to the ASTM F543 standard testing protocols and surgical guidelines. To examine the screw placement and cement distribution, anteriosuperior and oblique radiographs were taken from each sample after insertion process was completed...
January 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28093376/a-new-angle-and-its-relationship-with-early-fixation-failure-of-femoral-neck-fractures-treated-with-three-cannulated-compression-screws
#12
Y L Zhang, W Zhang, C Q Zhang
BACKGROUND: The Pauwels angle has been used widely, however an accurate evaluation of this angle is difficult because of deformity of the affected lower extremity. Therefore we designed a new measurement of the orientation of femoral neck fracture and applied this in a retrospective study to assess: (1) its reproducibility, (2) its advantages compared with the Pauwels angle, (3) its relationship with the short-term prognosis treated with three cannulated compression screws. HYPOTHESIS: This new measurement is reproducible and has some reference meaning for the treatment of femoral neck fractures...
January 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28074463/importance-of-fixation-of-posterior-malleolus-fracture-in-trimalleolar-fractures-a-retrospective-study
#13
Sinan Karaca, Meriç Enercan, Güzelali Özdemir, Sinan Kahraman, Mutlu Çobanoğlu, Metin Küçükkaya
BACKGROUND: The aim of this retrospective study was to evaluate treatment effect and importance of posterior malleolus (PM) fixation in surgically treated trimalleolar fractures. METHODS: A total of 57 cases of ankle joint fracture involving PM and treated with open reduction and internal fixation technique between 2004 and 2011 were evaluated. PM fixation was performed with cannulated screws in 46 cases, and in 11 cases, PM plate was used. All patients were assessed using American Orthopaedic Foot and Ankle Society (AOFAS) score, American Academy of Orthopedic Surgeons (AAOS) foot and ankle questionnaire, and Visual Analog Score (VAS) pain scale...
November 2016: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/28057632/are-two-retrograde-3-5-mm-screws-superior-to-one-7-3-mm-screw-for-anterior-pelvic-ring-fixation-in-bones-with-low-bone-mineral-density
#14
Y P Acklin, I Zderic, S Grechenig, R G Richards, P Schmitz, B Gueorguiev
OBJECTIVES: Osteosynthesis of anterior pubic ramus fractures using one large-diameter screw can be challenging in terms of both surgical procedure and fixation stability. Small-fragment screws have the advantage of following the pelvic cortex and being more flexible.The aim of the present study was to biomechanically compare retrograde intramedullary fixation of the superior pubic ramus using either one large- or two small-diameter screws. MATERIALS AND METHODS: A total of 12 human cadaveric hemipelvises were analysed in a matched pair study design...
January 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28056260/-research-progress-of-hoffa-fracture
#15
Y B Zhou, Q X Wang, W Chen
Hoffa fracture is a rare type of fracture confined to the coronal plane of the femoral condyle. High-energy is a common reason of Hoffa fracture, and low-energy trauma and iatrogenic injury can also cause Hoffa fracture in some cases. The commonly used classifications include Letenneur classification, CT classification, AO classification and modified AO classification. X-ray is the first choice to diagnose Hoffa fractures, fracture lines can be found. If the X-ray is negative, CT scan and MRI should be performed...
January 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28050549/bilateral-stress-fracture-of-femoral-neck-in-non-athlete-case-report
#16
Ubiratan Stefani de Oliveira, Pedro José Labronici, André João Neto, Alexandre Yukio Nishimi, Robinson Esteves Santos Pires, Luiz Henrique Penteado Silva
Bilateral stress fracture of femoral neck in healthy young patients is an extremely rare entity, whose diagnostic and treatment represent a major challenge. Patients with history of hip pain, even non-athletes or military recruits, should be analyzed to achieve an early diagnosis and prevent possible complications from the surgical treatment. This report describes a 43-year-old male patient, non-athlete, without previous diseases, who developed bilateral stress fracture of femoral neck without displacement...
November 2016: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28018062/non-union-fracture-neck-femur-in-a-toddler-reconstructed-by-valgus-osteotomy-a-minimally-invasive-approach
#17
Amit Sharma, Anurag Tiwari, Tarun Verma, Lalit Maini
BACKGROUND: Non-union is one of the devastating complications of fracture neck of femur. Though a very rarely encountered entity in a toddler (1-3 years paediatric age group), non-united femoral neck fractures are reported in developing countries because of mismanagement by quacks and delay in referrals. For operative treatment, many different procedures have been described, including close/open reduction and internal fixation using K-wires, cannulated screws, fibula or nails. There is no evidence in the literature that one or other implant influences the rate of postoperative complications, such as avascular femoral head necrosis or coxa vara...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/27990430/metformin-prevents-nonunion-after-three-cannulated-screw-fixation-in-displaced-femoral-neck-fractures-a-retrospective-study
#18
Xiao-Zhong Zhu, Xian-You Zheng
Patients aged from 40 to 60 with displaced fractures of the femoral neck (Garden III or IV) who received fixation with three cannulated screws from January 2005 to December 2012 were evaluated retrospectively for the development of nonunion. Plasma HbA1C, a marker for long-term plasma glucose level, anti-T2DM medication, and other potential risk factors were recorded for the purpose of this study. There were no differences between the union and nonunion groups with respect to age, gender, Garden classification, Pauwel's angle, reduction quality, and T2DM presence...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27987507/-polymethylmethacrylate-augmentation-of-bone-cement-injectable-cannulated-pedicle-screws-for-the-treatment-of-degenerative-lumbar-diseases-with-osteoporosis
#19
H L Sun, C D Li, Z C Yang, X D Yi, H Liu, H L Lu, H Li, Y Wang
OBJECTIVE: To describe the application of polymethylmethacrylate augmentation of bone cement-injectable cannulated pedicle screws for the treatment of degenerative lumbar diseases with osteoporosis. METHODS: Observation group included 14 cases of degenerative lumbar diseases with osteoporosis received polymethylmethacrylate augmentation of bone cement-injectable cannulated pedicle screws from November 2014 to July 2015, control group included 12 cases of degenerative lumbar diseases with osteoporosis received polymethylmethacrylate augmentation with traditional pedicle screws...
December 18, 2016: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/27975351/-3d-fluoroscopy-navigated-magerl-fusion-of-the-1st-and-2nd-cervical-vertebra
#20
G Stein, G Schiffer, J Bredow, C Meyer
Background: Treatment of type II fractures of the odontoid process is still controversial. Besides conservative treatment, there are surgical options, including anterior screw fixation, as first described by Böhler and Magerl, or procedures using a dorsal approach. Many authors prefer dorsal fusion of C1 and 2, due to the reliable, biomechanical stability. In this context, pedicle screw fixation, as described by Harms, and transarticular screw fixation of the atlantoaxial joints, as described by Magerl, have to be mentioned...
December 2016: Zeitschrift Für Orthopädie und Unfallchirurgie
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