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[New reconstructive technique for massive zone 2+1 pelvic defects after oncological resection]
Francisco Principe1, Lionel LLano1, Franco De Cicco1
1Hospital Italiano de Buenos Aires.
Revista De La Facultad De Ciencias Medicas (Cordoba, Argentina)
|October 1, 2025
Summary
Proximal tibial allograft reconstruction effectively restores the acetabular dome after hemipelvectomy in pediatric patients. This limb-sparing technique preserves the proximal femur and promotes functional recovery.
Area of Science:
- Orthopedic Surgery
- Pediatric Oncology
- Reconstructive Surgery
Background:
- Reconstruction of the acetabular dome after internal hemipelvectomy is challenging, particularly in pediatric patients.
- Pelvic sarcomas necessitate extensive resections, often impacting long-term function and prognosis.
Purpose of the Study:
- To present a novel technique for acetabular dome reconstruction using proximal tibial allograft in young patients.
- To evaluate the functional outcomes and complications of this reconstructive approach.
Main Methods:
- Limb-sparing surgery was performed on three pediatric patients with pelvic bone sarcoma (Zone 2+1).
- Reconstruction was achieved using a proximal tibial allograft to recreate the acetabulum, preserving the proximal femur.
Main Results:
- Follow-up averaged 42 months in these minor patients.
- Satisfactory reconstruction allowed assisted ambulation and full weight-bearing in two cases, with early discharge for two patients.
- Complications included two acute and one chronic infection.
Conclusions:
- Proximal tibial allograft reconstruction is a feasible technique for acetabular dome restoration in pediatric patients undergoing hemipelvectomy.
- This method preserves the proximal femur, supports functional recovery, and is adaptable for low-resource settings, potentially allowing for future arthroplasty.
