A novel external fixator to facilitate accurate and efficient fracture treatment

Shen, Mingkui3; Huang, Weijun1; Ai, Zizheng1; Li, Jingna1; Liang, Huaping2; Dong, Xieping1

2021

International Journal of Clinical and Experimental Medicine   影响因子和分区

1940-5901

Background: With the rapid popularization and application of the technology of external skeletal fixation, using an external fixator is becoming an effective method for treating various complex fractures. However, due to the instability, assembly complexity and poor controllability, designing a new external fixator to facilitate accurate and effective treatment of fractures has become an interesting challenge to peruse. Methods: We designed a new type of external fixator suitable for the treatment of clinically complex fractures. Then, a prospective study (trial number: 201636) was conducted on patients with various complex fractures from September 2017 to September 2019 in Jiangxi Provincial People's Hospital. During this period, 24 patients were treated using a kind of universal joint external fixator and its therapeutic effects were evaluated. In addition, we adopted universal joint external fixators (UJEF) and assembly external fixators (AEF) to fix adult cadaveric femoral fractures, and subsequently their mechanical stability was assessed by a biomechanical testing machine. Results: This device design not only fits the repair site but can also be conveniently installed and implanted. Lastly, all patients treated with the universal joint fracture external fixators achieved good fixation and healing. With in vitro biomechanical testing, the constructed models were loaded under axial compression, lateral compression and torsion respectively. As a result, there was no significant difference in the total axial stiffness between the two groups. Besides, the lateral stiffness was 1.554 +/- 0.017 mm for the UJEF group and 1.342 +/- 0.020 mm for the AEF group (P<0.001) under a 600 N load, while the torsional stiffness was 15.727 +/- 0.141 degrees for the UJEF group and 14.472 +/- 0.292 degrees for the AEF group under a 40 Nm load. Conclusion: In this relatively small and preliminary study, the universal joint external fixator which achieved a stable mechanical structure was strengthened, as an effective and comprehensive therapy tool for fractures. If these findings can be confirmed in a larger study, this external fixator may be widely used in certain situations where traditional external fixators are not a convenient choice.

External fixator fracture cadaver femur fracture biomechanics

ESCI

英语

第一

Open Fund of State Key Laboratory of Trauma, Burn and Combined Injury["SKLKF201710","2013BAI05B00","2013BBG70021"]

Research & Experimental Medicine

Medicine, Research & Experimental

WOS:000732419800005

E-CENTURY PUBLISHING CORP

Web of Science

1.Nanchang Univ, Jiangxi Prov Peoples Hosp, Aiguo Rd 92, Nanchang 330006, Jiangxi, Peoples R China
2.Army Med Univ, Daping Hosp, Dept Wound Infect & Drug, State Key Lab Trauma Burns & Combined Injury, Changjiang Rd 10, Chongqing 400010, Peoples R China
3.Southern Univ Sci & Technol, Sch Med, Shenzhen, Peoples R China

Shen, Mingkui,Huang, Weijun,Ai, Zizheng,et al. A novel external fixator to facilitate accurate and efficient fracture treatment[J]. International Journal of Clinical and Experimental Medicine,2021,14(11).

Shen, Mingkui,Huang, Weijun,Ai, Zizheng,Li, Jingna,Liang, Huaping,&Dong, Xieping.(2021).A novel external fixator to facilitate accurate and efficient fracture treatment.International Journal of Clinical and Experimental Medicine,14(11).

Shen, Mingkui,et al."A novel external fixator to facilitate accurate and efficient fracture treatment".International Journal of Clinical and Experimental Medicine 14.11(2021).