predictable and reproducible use of bone graft for reconstruction of defects with total knee replacement requires ( 1 ) surface preparation of host bone to expose a viable bony bed , ( 2 ) definition of the defect and preparation of the graft so that excellent fit and fixation are obtained , ( 3 ) coverage of the graft by the component to prevent resorption of unstressed graft which may compromise the press-fit of the graft and lead to failure by collapse , ( 4 ) protection of the graft from overload by correct alignment of components and limb and by limited weight-bearing until union occurs , ( 5 ) protection of the graft by use of a stemmed component when indicated .
C0262950
bone
C0825429
surface