1. A short plate compression screw with diagonal bolts—A biomechanical evaluation performed experimentally and by numerical computation 
Eran Peleg, Rami Mosheiff, Meir Liebergall, Yoav Mattan 
Clinical Biomechanics 
Volume 21, Issue 9, Pages (November 2006)
DOI: /j.clinbiomech
Copyright © 2006 Elsevier Ltd Terms and Conditions

2. Fig. 1
Right—control device (DHS); Left—VSP-DHS device. The VSP has two screws angled at 45°.
Clinical Biomechanics  , DOI: ( /j.clinbiomech )
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3. Fig. 2
A pair of bones fixated (left) by a VSP-DHS device and a control device (DHS) (right). Intertrochanteric fractures are mimicked by an intertrochanteric medially based wedge resection.
Clinical Biomechanics  , DOI: ( /j.clinbiomech )
Copyright © 2006 Elsevier Ltd Terms and Conditions

4. Fig. 3
Collapse load test of fixated femurs (VSP-DHS left and DHS on the right).
Clinical Biomechanics  , DOI: ( /j.clinbiomech )
Copyright © 2006 Elsevier Ltd Terms and Conditions

5. Fig. 4
A three dimensional mesh focusing on the region of contact between screws and bone (example of VSP-DHS FE model).
Clinical Biomechanics  , DOI: ( /j.clinbiomech )
Copyright © 2006 Elsevier Ltd Terms and Conditions

6. Fig. 5 Boundary conditions applied to the three dimensional models.
Clinical Biomechanics  , DOI: ( /j.clinbiomech )
Copyright © 2006 Elsevier Ltd Terms and Conditions

7. Fig. 6 Deflection measured for both devices every 10th cycle.
Clinical Biomechanics  , DOI: ( /j.clinbiomech )
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8. Fig. 7
Stress fields developed in the four-hole design. Loading condition applied to femoral head – 3000N. Maximum stress does not exceed yield stress.
Clinical Biomechanics  , DOI: ( /j.clinbiomech )
Copyright © 2006 Elsevier Ltd Terms and Conditions

9. Fig. 8
Stress field developed in the two-hole design. Loading condition applied to femoral head – 3000N. Maximum stress exceeds the allowed yield stress, indicating a high probability for failure.
Clinical Biomechanics  , DOI: ( /j.clinbiomech )
Copyright © 2006 Elsevier Ltd Terms and Conditions