Talking about acetabular revision in major bone defect. What do you think about acetabular cups that rely on iliac bone fixation like the McMinn stemmed cup or similar ?
If you use an acetabular revision component with a rim, it must have full roof/rim contact and there must also be a full compression in the acetabulm itself. Maybe for this you need a bonegraft. If you use a cemented PE-cup it is more easy, as all defects in the cavity are filled with PMMA. But also here, the rim contact should be kept as much as possible for weight-bearing. I like to discourage you from stem-cups, as those destroy still more bone in the roof and in case of a postoperative infection, you have much more to worry about. Look here, if this suits your case: https://www.linkorthopaedics.com/de/fuer-den-arzt/produkte/huefte/revision/pfannen-zementierbar/beckenteilersatz/
Dear Dr Pignatti
If you face with an acetabular defects of less than 30%; Paprosky types 2 or less, porous cementless cups fixed with screws maybe enough.acetabular defects greater than 30%; at least Paprosky types 3A maybe need impacted morsellised allografts with ofcourse a cemented cup technique . Difficult cases with pelvic discontinuity require acetabular plates or large cages but its really a disaster.
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