Bone Tumor Resection with Allograft Reconstruction in the Distal Femur

A great example of high-accuracy orthopedic oncology surgery carried out with dedication and teamwork.

This case, performed by Dr. Alexander Lazarides, involved a young patient with a bone tumor in the distal femur — a particularly complex area where preserving joint function and stability was key.

The objective: remove the entire tumor while preserving as much healthy bone as possible, with a safety margin of 7 mm.

To achieve this, we collaborated closely with Dr. Lazarides to design patient-specific cutting guides based on detailed CT & MRI imaging.

Two guides were developed to allow a combined anterior, medial, and lateral approach.

6 resection planes were precisely planned.

16 K-wires were placed to ensure stability and accuracy during the cut, including several used as mechanical stops that effectively formed a cage around the surgical margin.

Every decision was carefully reviewed and validated together, adapting the plan to surgical constraints and ensuring a smooth and efficient procedure.

An allograft was selected early and fully integrated into the planning process in collaboration with MTF, supporting immediate reconstruction.

This case highlights how thoughtful preparation and custom tools can support surgical accuracy and help address complex anatomical challenges.

Grateful for Dr. Lazarides' trust and the constructive exchanges throughout the planning process.

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