How 3D Preoperative Planning and Patient-Specific Guides Supported a Heterotopic Ossification Resection near the hip

In this case, the surgical team faced the challenge of removing a heterotopic ossification located close to the acetabulum — a highly constrained anatomical area where precision and control are essential.

From Preoperative Planning to Intraoperative Guidance

To support the surgical act, a patient-specific 3D guide was designed based on detailed preoperative planning.This plan defined:

• Two cutting planes with precise orientation and depth

• The use of six K-wires to secure the guide and serve as mechanical stops for depth control

• A stepwise resection strategy, starting with the removal of small bridges before completing the cuts with a saw blade under guided control

Once the pathological fragment was freed, it could be removed cleanly, allowing the femur to be separated from the acetabulum as intended.

The patient-specific guide transformed a challenging procedure into a sequence of controlled and reproducible steps, faithfully mirroring the preoperative plan.

Planning That Supports, Not Replaces

It is essential to highlight that such preparation does not replace the surgical act — it supports it.

By providing a clear roadmap, it helps reduce variability in the operating room while leaving the precision of execution in the hands of the surgical team.

At 3D-Side, we are grateful to have contributed to this surgical journey, where planning and technology work hand in hand to support both the surgical team and the patient.