Retrospective study of 71 revision THAs evaluating whether longer fully porous-coated stems (9- and 10-inch) can reliably address Paprosky Type IIIB and IV femoral defects, and whether impaction bone grafting or modular tapered stems perform better in the highest-grade deficiencies.
When you encounter a Paprosky Type IIIB femur at revision, measure the endosteal canal: if it's under 19 mm a long fully porous-coated stem is appropriate, but above 19 mm — or any Type IV defect. Plan for a modular tapered stem or impaction bone grafting instead.
The Paprosky classification drives your implant selection before you ever open the room.
Retrospective study of 71 revision THAs evaluating whether longer fully porous-coated stems (9- and 10-inch) can reliably address Paprosky Type IIIB and IV femoral defects, and whether impaction bone grafting or modular tapered stems perform better in the highest-grade deficiencies.
When you encounter a Paprosky Type IIIB femur at revision, measure the endosteal canal: if it's under 19 mm a long fully porous-coated stem is appropriate, but above 19 mm — or any Type IV defect. Plan for a modular tapered stem or impaction bone grafting instead.
The Paprosky classification drives your implant selection before you ever open the room.