Surgical

Question 1

What is the grading system for the femoral component cement mantle?

Answer 1

Barrack and Harris grading system
grade A
complete filling of medullary canal
“white-out” of cement-bone interface
grade B
slight radiolucency of cement-bone interface
grade C
radiolucencies > 50% of bone-cement interface or incomplete cement mantles
grade D
gross radiolucencies and/or failure of cement to surround tip of stem

Question 2

What does grade B indicate in the grading system for the femoral component cement mantle?

Answer 2

Slight radiolucency at the bone-cement interface (<50%)

This suggests minor issues with the cement mantle.

Question 3

Define grade C in the context of the femoral component cement mantle grading system.

Answer 3

Lucency surrounding 50% to 99% of the interface or any cement mantle defect

This represents a moderate level of concern regarding the cement mantle.

Question 4

What is considered grade D in the grading system for the femoral component cement mantle?

Answer 4

Complete lucency on any projection or a defect of the mantle at the tip of the stem

This indicates a severe issue with the cement mantle.