DHS PRESENTATION

1. AND BIOMECHANICS?
*

2. *

5. *
*Posteromedial comminution (calcar)
*Subtrochanteric extension / reverse oblique
*Involvement of lateral cortex

6. *
*Dynamic hip screw (DHS)
*Cephalomedullary device
*Fixed angle device

7. *

8. *

9. *
CONTROLLED
COLLAPSE

10. *

14. *
Shorter lever arm in
CMD – reduce
bending forces

15. *

16. *
*Pre-op planning to determine best way to reduce
the fracture
*Traction
*Internal rotation
*Occasionally need to lift the posterior
displacement

20. *

21. TAD
should be
<25mm

22. *
*Correct indication
*Pre-op planning
*Reduce before scrub
*Slightly inferior - centre
*Achieve TAD <25mm