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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 | Comparative effects of nebivolol and valsartan on atrial electromechanical cou- pling in newly diagnosed stage 1 hypertensive patients显示文摘 | Altun B Aear G Ak~ay A | 2011 | Turk Kardiyol Dern A rs2011，39，7： | 1 |
| 3 | Adsorption of Cu(Ⅱ), Zn(Ⅱ ), Ni(Ⅱ), Pb(Ⅱ), and Cd(Ⅱ) from aqueous solution on Amberlite IR-120 synthetic resin显示文摘 | DEMIRBAS A PEHLIVAN E CODE F ALTUN T ARSLAN G | 2005 | J Colloid Interface Sci2005，282，1： | 1 |
| 4 | Co-expression of cyclooxygenase-2 and vascular endothelial growth factor in inflamed human pulp: an immunohisto chemical study显示文摘 | Giiven G Altun C Giinhan O | 2007 | J Endod2007，33，1： | 1 |
| 5 | Use of triple antibiotic paste as a disinfectant for a traumatized immature tooth with a periapical lesion: A case report显示文摘 | Akgun OM Altun C Guven G | 2009 | Oral Surg Oral Med Oral Pathol Oral Radiol Endod2009，108，2： | 1 |
| 6 | Immobilization of pepsin on chitosan beads显示文摘 | Altun G D Cetiuns S A | 2007 | Food Chemistry2007，100，： | 1 |
| 7 | Improved K-means clustering algorithm for exploring local protein sequence motifs representing common structural property显示文摘 | ZHONG Wei ALTUN G HARRISON R | 2005 | IEEE Transactions on Nanobioscience2005，4，3： | 1 |
| 8 | Improved K-means clustering algorithm for exploring local protein sequence motifs representing common structural property显示文摘 | ZHONG Wei ALTUN G HARRISON R | 2005 | IEEE Transactions on NanoBio Science2005，4，3： | 1 |
| 9 | False positivity for Aspergillus antigenemia related to the administration of piperacillin/tazobactam显示文摘 | Tanriover MD Metan G Altun B | 2005 | Eur J intern Meal2005，16，7： | 1 |
| 10 | Adsorption of Cu(II), Zn(II), Ni(II), Pb(II), and Cd(II) from aqueous solution on amberlite IR-120 synthetic resin 显示文摘 | DEMIRBAS A PEHLIVAN E GODE F ALTUN T ARSLAN G | 2005 | Journal of Colloid and Interface Science2005，282，1： | 1 |
| 11 | Hemopericardium-related fatalities:a 10-year medicolegal autopsy experience显示文摘 | Altun G Altun A Yilmaz A | 2005 | Cardiology2005，104，3： | 1 |
| 12 | New trends in sample preparation: on-line microextraction in packed syringe (MEPS) for LC and GC applications Part III: determination and validation of local anaesthetics in human plasma samples using a cation-exchange sorbent and MEPS-LC-MS-MS 显示文摘 | ALTUN Z ABDEL-REHIM M BLOMBERG L G | 2004 | J Chromatogr B2004，，： | 1 |
| 13 | Immobilization of pepsin on chitosan beads显示文摘 | ALTUN G D CETINUS S A | 2007 | Food Chemistry2007，100，： | 1 |
| 14 | Boosting selection of speech related features to improve performance of multi-class SVMs in emotion detection 显示文摘 | Altun H Polat G | 2009 | Expert Systems with Appli- cations2009，36，4： | 1 |
| 15 | Boosting selection of speech related features to improve performance of multi-class SVMs in emotion detection 显示文摘 | Altun H Polat G | 2009 | Expert Systems with Applications2009，36，4： | 1 |
| 16 | An alternative treatment in hy- pertriglyceridemia-induced acute pancreatitis in pregnancy: Plas- mapheresis显示文摘 | Altun D Eren G Cukurova Z | 2012 | J Anaesthesiol Clin Pharmacol2012，28，2： | 1 |
| 17 | Improved K-means clustering algorithm for exploring local protein sequence motifs representing common structural property显示文摘 | Zhong W Altun G Harrison R | 2005 | IEEE Transactions on Nano-bioscience2005，4，3： | 1 |
| 18 | Boosting selection of speech related features to improve performance of multi-class SVMs in emotion detection 显示文摘 | ALTUN H POLAT G | 2009 | Expert Systems with Applications2009，36，4： | 1 |
| 19 | Some fixed point theorems on ordered cone metric spaces显示文摘 | ALTUN I DURMAZ G | 2009 | Rend Circ Mat Palermo2009，58，： | 1 |
| 20 | Some fixed point theorems on ordered cone metric spaces 显示文摘 | Altun I Durmaz G | 2009 | Rendiconti del Circolo Matematico di palermo2009，58，2： | 1 |
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