3.5 Revision Arthroplasty

01. The most usual cause of mechanical failure is

02. Large amounts of polyethylene debris can cuse

03. What can be the consequence of malalignment or too much constraint?

04. The early signs of prosthetic loosening are

05. Radiolucent lines are not uncommon around the tibia, even in well-fixed implants.

06. Lucent lines greater than 2mm or lines increasing in size over time indicate a potential failure

07. Compressive bone strength of the proximal tibia is greatest in the :

08. The strength of femoral metaphyseal bone is generally higher than that of the tibia

09. A Type F1 femoral defect involves minimal cancellous bone damage to

10. An F2A classificatin involves damage to both condyles

11. An F2B the classification involves damage to both condyles

12. The Type 1 tibia is characterised by

13. A Type T2A L defect is a lateral tibial defect

14. The Sigma TC3 intercondylar box dimension is identical to that of the Sigma PS component

15. The Sigma TC3 femoral component has the same external geometry as the Sigma PS component

16. The TC3 tibial bearing insert has the same bearing geometry as the Sigma PS insert

17. The height of the TC3 tibial spine is

18. Sigma femoral stems augments are manufactured from

19. Sigma femoral stem extensions are available in

??20. Sigma femoral augments can be used in combination

??21. Sigma Modular Plus augments are available in

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22. Sigma Press-fit tibial stem extensions are available in

23. The LCS Compete unconstrained femoral component allow the use of condylar augments and steam extension

24. VVC is an acronym for:

25. The LCS Complete VVC femoral component allows the use of condylar augments and stem extensions

26. The LCS Complete VVC femoral component has the same external geometry as the LCS Complete femoral component

27. Femoral metaphyseal sleeves can be used with all femoral components

28. M.B.T. revision tibial components have the same plateau dimension as the standard M.B.T. component

29. M.B.T. revision platform accept tibial block augments

??30. M.B.T. block augments are the same shape as Sigma modular augments

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31. Tibial sleeves can be used with block augments

??32. Tibial stem extensions can be used with M.B.T. revision components

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33. Hinge knees are recommended for

34. The Noiles Rotating Hinge (NRH) flexes to

35. The NRH is manufactured from

36. The single curve of the femoral component sagittal profile is designed to

37. The hinge pin provides M/L and A/P stability

38. The polyethylene bumb stop limits hyper extension to

39. The NRH femoral coronal geometry is

??40. The NRH bearing does not suffer edge loading because

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