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Efficacy of radial styloid targeting screws in volar plate fixation of intra-articular distal radial fractures: a biomechanical study in a cadaver fracture model

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Academic year: 2020

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Figure

Figure 1 Wrist full extension and intra-articular unstable fracture model. Polymethyl methacrylate was mounted on the metacarpal bonesof each specimen to simulate axial loading of the distal radius across the intact wrist joint at full wrist extension (A)
Figure 3 A Material Testing Machine. A Material Testing Machine(Autograph, Shimadzu, Kyoto, Japan) load frame was mounted onthe flat of polymethyl methacrylate surface on the metacarpalbones of each specimen with the wrist at full extension
Figure 5 The average change in gap between the radial and proximal fragment. (A) The average gap in the case of fixation without radialstyloid screws (-) tended to decrease at about 10 sec after start of loading compared to that in cases with the screws (+
Figure 6 Example cases of plate and screws after failure of fixationboth ulnar fragment screws were broken while radial fragment screws remained intact (radial styloid screw -)
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