Design And Manufacture The Femur Reverse Locking Intramedullury Nailing And The Comparative Biomechanical Study In Fixing Femoral Shaft Fracture With TypeT Femur Condylar Fracture

Design and Manufacture the Femur Reverse Locking Intramedullury Nailing and the Comparative Biomechanical Study in Fixing Femoral Shaft Fracture With Type T Femur Condylar FracturePart I Measurement of The Anatomic Data of The Proximal and Distal FemurObjectives: To provide the data for the design and modification of internal fixation device for the treatment of femoral shaft fracture with type T femur condylar fracture, we measured the anatomic data of the proximal and distal femur parameters and investigated its geometric character. Methods: 13 parameters of the proximal and distal femur were obtained, including the distance of the plough nest to femur marrow cavity(DPN), the distance of femur marrow cavity to intracondylar nest(DFMC), The width of medial femoral condyl (WMFC), the width of lateral femoral condyl(WLFC),the femoral medial condyl shaft angle (FMCSA), the femoral lateral condyl shaft angle (FLCSA), the hight of femoral lateral condyl(HFLC),the hight of femoral medial condyl(HFMC), the hight of intracondylar nest(HIN), the femoral condyl shaft angle(FCSA),the least radius vector of below part of femur(LRV), the width of femoral condyl(WFC),and the length of femoral (LF). The distribution and relationship of the data were analyzed statistically.Results: DPN: 60.53±3.35mm, DFMC: 50.11 ±3.47mm, WMFC: 47.35 + 3.54mm, WLFC: 33.16±2.99mm, FMCSA: 37.4 ± 2.6~0, FLCSA: 31.2 ± 4.6~0, HLFC: 39.79 ±2.72mm, HMFC: 35.06 ± 2.33mm, HIN: 20.98 ± 2.31mm, FCSA: 94.31±2.43~0, LRV: 26.36 ± 2.12mm, WFC: 79.79± 5.17mm, LF: 405.21 ± 10.91mm。 The strong correlation among DPN , DFMC, WMFC, WLFC were examined.There were no correlation between DPN,DFMC, WMFC, WLFC and FMCSA, FLCSA, FCSA.Conclusion: 1 It is the first time to measure the femoral medial condyl shaft angle,and the femoral lateral condyl shaft angle.