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| 1 | Precontoured buttress plate vs reconstruction plate for acetabulum posterior wall fractures: A biomechanical study显示文摘BACKGROUND The purpose of open reduction and internal fixation of acetabulum posterior wall fractures is to restore anatomical structure and stability of the hip joint, in order to start weight bearing as soon as possible and prevent hip arthrosis; restoration of the anatomy should preserve function of the joint as well. Although 'special shaped precontoured plates' have been developed in recent years for surgical treatment of this region, studies comparing the traditional plates with the newly designed precontoured plates are lacking.AIM To evaluate the biomechanical properties of precontoured anatomic buttress and conventional curved reconstruction plates(CCRPs) for posterior wall acetabulum fracture treatment.METHODS Twelve pelvis models were created for testing plate treatment of fracture in the posterior wall of the acetabulum. These 12 pelvis models were used to create 24 hemipelvis models(experimental) by cutting from the sagittal plane and passing over the center of gravity, after which the posterior wall acetabular fractures(of similar type and size) were created. In these experimental models, the right acetabulum was fixed with a 5-hole CCRP, while the left was fixed with a precontoured anatomic buttress plate(PABP). Samples were placed through thetest device and were subjected to static load testing, with a constant testing velocity of 2 mm/min until the load reached 2.3 kN or the acetabular fixation failed. Dynamic tests were also performed with sinusoidal wave load, with a maximal load of 2.3 kN and a load ratio of 0.1.RESULTS The average stiffness values were 460.83 ± 95.47 N/mm for the PABP and 291.99± 118.58 N/mm for the 5-hole CCRP. The precontoured anatomic acetabulum buttress plates had significantly higher rigidity than the CCRPs(P = 0.022). There was a statistically significant difference between the unloaded and 2.3 kN-loaded values of AL(posterosuperior fracture line vertical to the ground surface) and CL(posteroinferior fracture line vertical to the ground surface) parameters for both the PABPs and the 5-hole CCRPs(P = 0.036 and P = 0.045, respectively).According to the static tests, the amount of total displacement was significantly less in the PABPs than in the CCRPs. Comparative analysis of the displacement in the BL(posterior wall fracture line horizontal to the ground) parameter yielded no statistically significant differences between the PABP and the 5-hole CCRPs(P= 0.261).CONCLUSION PABP provides more stable fixation in acetabulum posterior wall fractures than5-hole CCRP, allowing for proximal or distal fracture line screw application without reshaping. | Güray Altun Gürsel Saka Teyfik Demir Fatma Kübra Erbay Elibol Mehmet Or?un Polat | 2019 | World Journal of Orthopedics2019，10，5： | 3 |
| 2 | Predictors of internet use for the professional development of teachers: An application of the theory of planned behaviour显示文摘 | Demir K | 2010 | Teacher Dev2010，14，1： | 1 |
| 3 | The cagA status of Helicobacter pylori isolates from dyspeptic children in Turkey显示文摘 | ?nci Nur Salt?k Hülya Demir Doruk Engin ?zge Darka Ertun? Yakut Aky?n Nurten Ko?ak | 2003 | FEMS Immunology and Medical Microbiology2003，，3： | 1 |
| 4 | Effects of basic fibroblast growth factor and phenytoin on healing of abdominal wal fascia and colonic anastomoses显示文摘 | Günes HV Demirer S Aydinuraz K | | 0，，03： | 1 |
| 5 | What is the reason of elevated alanine amino- transferase level in HBeAg negative pati- ents with low viremia: NAFLD or chronic hepatitis显示文摘 | Demir K Akyuz F Ozdil S | 2007 | Ann Hepatol2007，6，2： | 1 |
| 6 | Accelerated ageing test of aubergine,cucumber and melon seeds in relation to time and temperature variables 显示文摘 | Demir I Ozden Y S Yilmaz K | 2004 | Seed Science and Technology2004，32，： | 1 |
| 7 | Hemodynamic and anesthetic advantages of dexmedetomidine, an al- pha 2-agonist, for surgery in prone position显示文摘 | Ozkose Z Demir FS Pampal K | 2006 | Tohoku J Exp Med2006，210，2： | 1 |
| 8 | Tuberculous peritonitis--reports of 26 cases,detailing diagnostic and therapeutic problems显示文摘 | Demir K Okten A Kaymakoglu S | | 0，，05： | 1 |
| 9 | Morphology of the lumbar spinal canal in normal adult turks 显示文摘 | Tacar O Demirant A Nas K | 2003 | Yonsei Med J2003，44，4： | 1 |
| 10 | Effect of raloxifene and atorvastatin in atherosclerotic process in ovariectomized rats显示文摘 | Cetinkaya Demir B Uyar Y Ozbilgin K | 2013 | J Obstet Gynaecol Res2013，39，1： | 1 |
| 11 | Single stage treatment of complete dislocation of radil head and forearm deformity us- ing osteogenesis in pacdiatric patiengs having multiple carti-laginous exostosis显示文摘 | Demir B Garsu S Ozturk K | 2011 | Arch Orthop Trauma Surg2011，，： | 1 |
| 12 | Comparison of influence of different manu- facturing methods on the cleaning efficiency of rotary nickel - titanium files 显示文摘 | Celik D Ta~demir T Er K | 2013 | Microsc Res Tech2013，76，3： | 1 |
| 13 | What is the reason of elevated alanine Aminotransferase level in HBeAg negative patients with low viremia: NAFLD or chronic hepatitis显示文摘 | Demir K Akyuz F Ozdil S | 2007 | Arm Hepatol2007，6，2： | 1 |
| 14 | Single voxel proton MR spectroscopy findings of typical and atypical intracranial meningiomas显示文摘 | DEMIR M K IPLIKCIOGLU A C DINCER A | 2006 | EurJ Radiol2006，60，1： | 1 |
| 15 | The use of commercial pectinase in fruit juice industry,Part2:Determination of the kinetic behavior of immobilized commercial pectinase显示文摘 | Sartoglu K Demir N Acar J | | 0，，： | 1 |
| 16 | Project Management Maturity Model ( PMMM ) in educational organizations显示文摘 | Demir C brahim K | 2011 | Procedia- Social and Behavioral Sciences2011，9，12： | 1 |
| 17 | The suppression of wound healing response with sirolimus and sunitinib following experi- mental trabeculectomy in a rabbit model 显示文摘 | Eren K Turgut B Akin MM Demir T | 2015 | Curt Eye Res2015，，： | 1 |
| 18 | Complications of arteriove- nous fistula with polytetraflouroethylen grafts in hemodialysis pa- tients显示文摘 | Demir D Ceviker K Aydin MS | 2015 | Niger J Clin Pract2015，18，1： | 1 |
| 19 | Decreased prohepcidin levels in patients with HBV-related liver disease:relation with ferritin levels显示文摘 | Yonal O Akyuz F Demir K | 2010 | Dig Dis Sci2010，55，12： | 1 |
| 20 | Patient ori- ented and robust automatic liver segmentation for pre-evaluation of liver transplantation 显示文摘 | SELVER M A KOCAOGLU A DEMIR G K | 2008 | Computers in Biology and Medicine2008，38，7： | 1 |
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