Insights & Updates

A cubitus varus deformity rarely comes down to a single angle. This case combined a 20° medial closing correction with a 12° derotation, using a patient-specific guide system built around four K-wires that align only once both corrections are achieved together — closing an angle and a rotation in one motion.

For grade 2 chondrosarcoma, the surgical margin is the only oncological defense — chemotherapy and radiation offer no safety net. In this periacetabular case spanning the acetabular and pubic regions, a single patient-specific guide was built in two connected parts to execute three cutting planes with a 10 mm margin in one pass.

Discover how two patient-specific surgical guides were designed as geometric counterparts to achieve accurate distal tibia tumor resection and anatomical allograft reconstruction in a case led by Prof. François Sirveaux.

A femoral neck osteotomy performed by Dr. Wudbhav Sankar at Children's Hospital of Philadelphia, guided by four patient-specific instruments. Three deployed intraoperatively and one that couldn't be, revealing as much about 3D surgical planning as those that were.

The tumor combined a bony component with an overlying soft tissue mass. Whether that mass could be displaced enough to fit a single large guide beneath it could not be predicted with certainty. The answer: two distinct guides, one lateral, one posterior, connected by a chevron geometry anchored on the sciatic notch

Extra-articular resection of a grade 2 iliac chondrosarcoma via ilioinguinal approach, planned with two patient-specific guides: one for resection, one for Ice-cream cone reconstruction. A single 3D anatomical reconstruction covering both operative stages, from the first cutting plane to final implant positioning.

How Dr Valérie Dumaine approached a sacroiliac tumor resection with preoperative 3D planning and a patient-specific cutting guide designed for intraoperative flexibility, including the option of an in-procedure laminectomy without losing the guide reference.

When a chondrosarcoma affects the ilium, a single bone tumor resection guide isn't always enough. Discover how a patient-specific dual-guide system enabled precise resection while preserving key muscle function.