Non-Invasive Expandable Implants in Pediatric Sarcomas

Pediatric primary bone tumors like Ewing Sarcoma of the femur or tibia pose a major reconstructive challenge. Removing the tumor often destroys the growth plate. As the child grows, the untreated limb becomes significantly longer, leading to pelvic tilt and scoliosis.

The Growth Challenge:

Skeletal growth occurs primarily at the growth plates around the knee. Excision of these plates stops growth in the affected limb.

Magnetically Expandable Prosthetics:

We utilize magnetically growable implants containing a miniature magnetic gear. As the child grows:

• No repeat surgeries are needed to lengthen the bone.
• The child sits in an outpatient clinic while an external electromagnetic coil is applied.
• Safe, incremental lengthening of 2-3 mm is achieved in 10 minutes without incisions or anesthesia.

Outcomes:

This technique allows children to complete their growth with equal leg lengths, full joint motion, and excellent cosmetic and functional results.