Patient-Specific Cutting Guide for Low-Grade Bone Lesion Resection: Precision and Bone Preservation

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Today, we take a closer look at a bone oncology case performed by Prof. François Sirveaux, where the surgical objective was to achieve complete resection of the pathological area while preserving as much healthy bone stock as possible. Preoperative Planning: The Foundation of Precision

Thanks to detailed 3D preoperative planning, it was possible to analyze the topography of the lesion with great accuracy and to define two cutting planes that encompassed the pathological area while minimizing impact on the supporting bone structure.

Three 2.0 mm K-wires were used as mechanical stops to control the depth of the most anterior cut. To preserve the femoral head, the lateral cut was oriented through healthy bone, allowing removal of the tumor on the medial side.An additional 2.5 mm K-wire served as a reference marker for the reconstruction phase with a plate.

Patient-Specific Guide: Ensuring Accuracy Throughout the Procedure

Based on the preoperative planning, a patient-specific guide was designed to accurately reproduce the defined orientations.Once positioned and securely fixed, it provided both visual and mechanical reference points throughout the surgical sequence — ensuring control, safety, and precision at every step.

We sincerely thank Prof. François Sirveaux for his trust and collaboration on this case.