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| 1 | Systematic review of dynamization vs exchange nailing for delayed/non-union femoral fractures显示文摘AIM To analyze the literature on efficacy of dynamamization vs exchange nailing in treatment of delayed and nonunion femur fractures.METHODS Ultimately, 31 peer-reviewed articles with 644 exchanged nailing patients and 131 dynamization patients were identified and analyzed. The following key words were inputted in different combinations in order to search the field of publications in its entirety: 'nonunion', 'delayed union', 'ununited', 'femur fracture', 'femoral fracture', 'exchange nailing', 'dynaiz(s)ation', 'secondary nailing', 'dynamic', 'static', and 'nail revision'. The initial search yielded over 150 results, and was refined based on the inclusion criteria: Only studies reporting on humans, non-unions and delayed unions, and the usage of exchange nailing and/or dynamization as a secondary treatment after failed IM nailing. The resulting 66 articles were obtained through online journal access. The results were filtered further based on the exclusion criteria: No articles that failed to report overall union rates, differentiate between success rates of their reported techniques, or articles that analyzed less than 5 patients. RESULTS Exchange nailing lead to fracture union in 84.785% of patients compared to the 66.412% of dynamization with statistically comparable durations until union(5.193 ± 2.310 mo and 4.769 ± 1.986 mo respectively). Dynamically locking exchange nails resulted in an average union time of 5.208 ± 2.475 mo compared to 5.149 ± 2.366 mo(P = 0.8682) in statically locked exchange nails. The overall union rate of the two procedures, statically and dynamically locked exchange nailing yielded union rates of 84.259% and 82.381% respectively. Therefore, there was no significant difference between the different locking methods of exchange nailing for union rate or time to union at a significance value of P < 0.05. The analysis showed exchange nailing to be the more successful choice in the treatment of femoral non-unions in respect to its higher success rate(491/567 EN, 24/57 dynam, P < 0.0001). However, there was no significant difference between the success rates of the two procedures for delayed union fractures(25/27 EN, 45/55 dynam, P = 0.3299). Nevertheless, dynamization was more efficient in the treatment of delayed unions(at rates comparable to exchange nailing) than in the treatment of non-unions.CONCLUSION In conclusion, after examination of factors, dynamization is recommended treatment of delayed femur fractures, while exchange nailing is the treatment of choice for non-unions. | Jacob E Vaughn Ronit V Shah Tarek Samman Jacob Stirton Jiayong Liu Nabil A Ebraheim | 2018 | World Journal of Orthopedics2018，9，7： | 5 |
| 2 | Dynamic recrystallization dur- ing high temperature deformation of magnesium显示文摘 | SAMMAN T A GOTTSTEIN G | 2008 | Materials Sci- ence and Engineering: A2008，490，12： | 1 |
| 3 | Simulation of hot-electron trapping andaging of nMOSFET's 显示文摘 | Patrick R Samman A | 1988 | IEEE Trans Electron Device1988，35，12： | 1 |
| 4 | Damage estimation from changes in curvature mode shapes 显示文摘 | Pandey A K Biswas M Samman M M | 1991 | Journal of Sound and Vibration1991，142，： | 1 |
| 5 | Damage de tection from changes in curvature mode shapes 显示文摘 | Pandey A K Biswas M Samman M M | 1991 | Journal of Sound and Vibration1991，145，2： | 1 |
| 6 | 显示文摘 | Samman T A Gottstein G | 2008 | Materials Science and Engineering A2008，490，12： | 1 |
| 7 | Damage detection from changes in curvature mode shapes 显示文摘 | Pandy A K Biswas M Samman M M | 1991 | Journal of Sound and Vibration1991，145，2： | 1 |
| 8 | Damage detection from changes in curvature mode shapes显示文摘 | Pandey A K Biswas M Samman M M | 1991 | Journal of Sound and Vibration1991，145，： | 1 |
| 9 | Damage Detection from Changes in Curvature Mode Shapes显示文摘 | Pandey A K Biswas W Samman M M | 1991 | Journal of Sound and Vibration1991，，3： | 1 |
| 10 | Damage detection from changes in curvature mode shapes显示文摘 | Pandey A K Biswas M Samman M M | 1991 | J Sound Vib1991，145，： | 1 |
| 11 | Damage detection from changes in curvature mode shapes显示文摘 | Pandey A K Biswas M Samman M M | | 0，，02： | 1 |
| 12 | Damage detectionfrom changes in curvature mode shapes显示文摘 | Pandy A K Biswas M Samman M M | 1991 | Journal ofSound and Vibration1991，145，2： | 1 |
| 13 | Damage detection from changes in curvature mode shapes显示文摘 | Pandey A K Biswas M Samman M M | 1991 | Journal of Sound and Vibration1991，145，2： | 1 |
| 14 | Feline calicivirus associated virulent systemic disease(FCV-VSD):Report on the first confirmed case in Madrid(Spain)显示文摘 | Velasco T Hosie M Samman A | 2014 | J Feline Med Surg2014，，15： | 1 |
| 15 | Damage detection from changes in curvature mode shapes显示文摘 | PANDEY A K BISWAS M SAMMAN M M | 1991 | Journal of Sound and Vibration1991，，145： | 1 |
| 16 | Damage detection from changes in curvature mode shapes 显示文摘 | Pandey A K Biswas M Samman M M | 1991 | Journal of Sound and Vibration1991，145，2： | 1 |
| 17 | Damage detec- tion from changes in curvature mode shapes 显示文摘 | Pandy A K Biswas M Samman M M | 1991 | Jour- nal of Sound and Vibration1991，145，2： | 1 |
| 18 | Damage detection from changes in curvature mode shapes显示文摘 | PANDEY A K BISWARS M SAMMAN M N | 1991 | Journal of Sound and Vibration1991，145，2： | 1 |
| 19 | Damage detection from changes in curvature mode shapes 显示文摘 | Pandey A K Biswas M Samman M M | 1991 | Journal of Sound and Vibration1991，145，2： | 1 |
| 20 | Damage detection from changes in curvature mode shapes显示文摘 | Pandey A K Biswas M Samman M M | 1991 | Journal of Sound and Vibration1991，145，2： | 1 |
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