This single-center retrospective series reports early outcomes for 80 consecutive patients who received a 3D-printed (EBM) modular hemipelvic endoprosthesis after periacetabular tumor resection between 2015 and 2017. The study asks whether highly porous metal interfaces and iliosacral screw fixation can eliminate the mechanical failures that have historically plagued pelvic reconstruction.
Prior-generation modular hemipelvic endoprostheses carried dislocation rates of 9–17% and aseptic loosening up to 5.2%, making pelvic reconstruction one of the highest-failure reconstructive procedures in orthopedic oncology.
When you plan periacetabular reconstruction, the fixation strategy matters biomechanically: iliosacral screws aligned to the iliofemoral load-bearing axis generate compression at the interface rather than shear, and the 80% porosity EBM surface enables bone ingrowth rather than ongrowth.
When your patient is receiving adjuvant chemotherapy or targeted therapy, build wound complication management into the plan from day one — 23% of those patients in this series developed dehiscence or infection (p = 0.03).
For patients requiring combined periacetabular and proximal femoral resection, counsel on the elevated dislocation risk and ensure constrained liner use, meticulous soft-tissue reconstruction, and hip brace compliance in the early postoperative period. The 32-month follow-up is short for a reconstruction expected to last decades. Zero loosening is encouraging but cannot yet be called durable.
This single-center retrospective series reports early outcomes for 80 consecutive patients who received a 3D-printed (EBM) modular hemipelvic endoprosthesis after periacetabular tumor resection between 2015 and 2017. The study asks whether highly porous metal interfaces and iliosacral screw fixation can eliminate the mechanical failures that have historically plagued pelvic reconstruction.
Prior-generation modular hemipelvic endoprostheses carried dislocation rates of 9–17% and aseptic loosening up to 5.2%, making pelvic reconstruction one of the highest-failure reconstructive procedures in orthopedic oncology.
When you plan periacetabular reconstruction, the fixation strategy matters biomechanically: iliosacral screws aligned to the iliofemoral load-bearing axis generate compression at the interface rather than shear, and the 80% porosity EBM surface enables bone ingrowth rather than ongrowth.
When your patient is receiving adjuvant chemotherapy or targeted therapy, build wound complication management into the plan from day one — 23% of those patients in this series developed dehiscence or infection (p = 0.03).
For patients requiring combined periacetabular and proximal femoral resection, counsel on the elevated dislocation risk and ensure constrained liner use, meticulous soft-tissue reconstruction, and hip brace compliance in the early postoperative period. The 32-month follow-up is short for a reconstruction expected to last decades. Zero loosening is encouraging but cannot yet be called durable.