BIOMECHANICS STUDY ON THREE-DIMENSIONAL EXTERNAL FIXATOR FOR OSTEOPOROTIC FRACTURE_Chinese Journal of Reparative and Reconstructive Surgery

Authors：

LIUZongchao ¹ , TIANZegao ² , JIANGYan ² , WANGZhenlong ¹ , LIUYong ¹ ,  LUXiaobo ²

1. Department of Orthopedics, Chinese Medicine Hospital Affiliated to Luzhou Medical College, Luzhou Sichuan, 646000, P. R. China;
2. Department of Orthopedics, the Affiliated Hospital of Luzhou Medical College;

Corresponding?author：

LUXiaobo, Email: luxiaobo1963@126.com

Keywords：

Three-dimensional external fixator; Osteoporotic fracture; Biomechanics

DOI：

10.7507/1002-1892.20150031

Video：

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Objective To explore the mechanical stability of the three-dimensional (3-D) external fixator for osteoporotic fracture so as to provide the biomechanical basis for clinical application. Methods Forty-five fresh frozen adult tibial specimens were selected to rapidly prepare the extracorporal tibia osteoporotic fracture models, and were randomly divided into 3 groups (n=15). Fractures were fixed with 3-D external fixators (3-D external fixators group), intramedullary nails (intramedullary nail group), and plate (plate group) respectively. Five specimens randomly from each group were used to do axial compression test, three-point bending test, and torsion test with microcomputer control electronic universal testing machine, then the mechanical parameters were calculated. Results In the axial compression test, the displacement of 3-D external fixator group and intramedullary nail group were shorter than plate group, showing significant differences (P<0.05); but no significant difference was found between 3-D external fixator group and intramedullary nail group (P>0.05). In the three-point bending test and torsion test, the deflection and the torsional angle of 3-D external fixator group and intramedullary nail group were smaller than plate group, showing significant differences (P<0.05); but no significant difference was found between 3-D external fixator group and intramedullary nail group (P>0.05). Conclusion The 3-D external fixator can fix fracture three-dimensionally from multiple plane and it can offer strong fixing. It is biomechanically demonstrated to be suitable for osteoporotic fracture.

Citation： LIUZongchao, TIANZegao, JIANGYan, WANGZhenlong, LIUYong, LUXiaobo. BIOMECHANICS STUDY ON THREE-DIMENSIONAL EXTERNAL FIXATOR FOR OSTEOPOROTIC FRACTURE. Chinese Journal of Reparative and Reconstructive Surgery, 2015, 29(2): 145-148. doi: 10.7507/1002-1892.20150031 Copy

1.	郝光亮, 郝永強, 晏煥青. 老年髖部骨折的住院治療費用分析. 中國骨質疏松雜志, 2008, 14(3):200-203.
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8.	劉振東, 范清宇. 應力遮擋效應-尋找丟失的鑰匙. 中華創傷骨科雜志, 2002, 4(1):62-64.
9.	趙曉剛, 薛德挺, 潘志軍. 骨質疏松性骨折外科治療. 國際骨科學雜志, 2013, 34(1):1-5.
10.	唐樹杰, 房經武, 王志彬. 論中國接骨學"動靜結合"理念的先進性. 天津中醫藥大學學報, 2008, 27(1):43-45.
11.	劉宗超, 蔣燕, 楊家福, 等. 有限內固定結合外固定支架與鋼板治療脛骨平臺骨折的療效分析. 中國矯形外科雜志, 2012, 20(6):505-508.
12.	崔軼, 李軍, 郭海, 等. 骨質疏松模型的評價方法研究進展. 中國骨質疏松雜志, 2013, 19(4):416-420.
13.	虞驚濤, 馬信龍, 馬劍雄. 骨質疏松動物模型評價方法. 中華骨質疏松和骨礦鹽疾病雜志, 2013, 7(1):66-70.
14.	唐瑞怡, 陳蓉. 骨質疏松癥動物模型研究進展. 中國實用婦科與產科雜志, 2014, 30(5):383-386.

1. 郝光亮, 郝永強, 晏煥青. 老年髖部骨折的住院治療費用分析. 中國骨質疏松雜志, 2008, 14(3):200-203.
2. 黃公怡. 骨質疏松性骨折的特點及臨床與研究進展. 基礎醫學與臨床, 2007, 27(10):1088-1092.
3. 尚慶, 劉宗超, 魯曉波. 快速制備骨質疏松體外模型的實驗研究. 中國修復重建外科雜志, 2013, 27(3):326-329.
4. 張光, 孫晶, 韓邕, 等. 正常人群骨礦物含量的定量CT測量和研究. 中國醫學影像技術, 1998, 14(6):402-404.
5. 劉忠厚, 楊定焯, 朱漢民, 等. 中國人骨質疏松癥建議診斷標準(第二稿). 中國骨質疏松雜志, 2000, 6(1):1-3.
6. 譚俊峰, 劉洋, 彭昊, 等. 兩種不同材料外固定支架固定脛骨骨折的生物力學研究. 生物醫學工程與臨床, 2013, 17(5):420-424.
7. 羅南萍, 劉恒國, 李金花, 等. 老年男性代謝綜合征患者骨密度與骨量、骨代謝物的關系. 中國組織工程研究與臨床康復, 2008, 12(7):1247-1250.
8. 劉振東, 范清宇. 應力遮擋效應-尋找丟失的鑰匙. 中華創傷骨科雜志, 2002, 4(1):62-64.
9. 趙曉剛, 薛德挺, 潘志軍. 骨質疏松性骨折外科治療. 國際骨科學雜志, 2013, 34(1):1-5.
10. 唐樹杰, 房經武, 王志彬. 論中國接骨學"動靜結合"理念的先進性. 天津中醫藥大學學報, 2008, 27(1):43-45.
11. 劉宗超, 蔣燕, 楊家福, 等. 有限內固定結合外固定支架與鋼板治療脛骨平臺骨折的療效分析. 中國矯形外科雜志, 2012, 20(6):505-508.
12. 崔軼, 李軍, 郭海, 等. 骨質疏松模型的評價方法研究進展. 中國骨質疏松雜志, 2013, 19(4):416-420.
13. 虞驚濤, 馬信龍, 馬劍雄. 骨質疏松動物模型評價方法. 中華骨質疏松和骨礦鹽疾病雜志, 2013, 7(1):66-70.
14. 唐瑞怡, 陳蓉. 骨質疏松癥動物模型研究進展. 中國實用婦科與產科雜志, 2014, 30(5):383-386.

Chinese Journal of Reparative and Reconstructive Surgery

BIOMECHANICS STUDY ON THREE-DIMENSIONAL EXTERNAL FIXATOR FOR OSTEOPOROTIC FRACTURE

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