A case of pelvic resection in one of the most anatomically challenging regions

The patient presented with a bone tumor located on the proximal portion of the ilium — an area where dense and delicate anatomy makes every surgical movement highly demanding. 

The objective was clear: remove the tumor while preserving the integrity of the surrounding structures.

The critical challenge? Executing a posterior cut in extremely close proximity to the tumor, without making contact, and preserving as much healthy bone as possible.

To navigate this complexity, Dr. Francois Sirveaux validated a precise 3-plane resection plan based on fused

CT and MRI imaging, incorporating a 10 mm safety margin.

A patient-specific cutting guide was then designed to conform exactly to the contours of the ilium. Stabilized with three K-wires, the guide ensured optimal fixation during the procedure. 

Each planned cutting depth was engraved directly onto the instrument, enabling millimeter-level precision throughout the resection.

Special care was taken in the posterior region: the tumor mass was manually mobilized prior to cutting to eliminate any risk of contamination.

Once resected, the specimen confirmed clear margins, with pelvic stability fully preserved.

We extend our sincere thanks to Dr. Sirveaux and his team for their confidence and surgical precision in managing this complex case.

These procedures allow no room for improvisation — they underscore the vital role of meticulous planning, cohesive teamwork, and customized tools tailored to each individual patient.