Grading (Femoral Stem)
A. Complete filling of medullary canal with ‘white-out’ at the cement-bone interface.
B. Slight radiolucency of cement-bone interface.
C. Radiolucency involving 50 to 99% of cement-bone interface OR incomplete cement mantle
D. Radiolucency of 100% at cement-bone interface in any projection OR incomplete coverage of tip of stem with cement.
Barrack RL, Mulroy RD Jr, Harris WH. Improved cementing techniques and femoral component loosening in young patients with hip arthroplasty. A 12-year radiographic review. J Bone Joint Surg Br. 1992;74(3):385-9