question: I was told that I have a subchondral fracture of my femur. I m to be non-weight bearing for a month and then if it s not improved that a bone cement type of procedure would need to be done. I have grade 3&4 osteoarthritis in the three compartments of my knee as well as a posterior horn medial meniscus tear with extrusion of the meniscus. What does all this mean?