A NEW APPROACH TO PARTIALKNEE ENDOPROSTHESIS IN PRIMARY BONE SARCOMAS

Area of Science:

• Orthopedic Surgery
• Pediatric Oncology
• Skeletal Reconstruction

Background:

• Bone sarcomas in skeletally immature patients present unique treatment challenges.
• Traditional resection methods can impact long-term bone growth and function.
• Partial knee endoprosthesis offers a limb-sparing alternative.

Purpose of the Study:

• To evaluate the functional outcomes of partial knee endoprosthesis in young patients undergoing bone sarcoma resection.
• To assess the advantages and indications for this surgical technique.
• To analyze functional scores using Ennekin/International Society of Limb Salvage (ISOLS) criteria.

Main Methods:

• Retrospective analysis of 14 patients (ages 10-22) treated with distal femur and proximal tibia partial endoprosthesis.
• Functional evaluation using Ennekin/ISOLS criteria.
• Assessment of complications and surgical technique by a single surgeon.

Main Results:

• Excellent functional results (>67% ISOLS criteria) achieved in 78.6% of patients.
• Good results (50-66% ISOLS criteria) observed in 21.4% of patients.
• Preservation of bone stock and no significant increase in surgery time with ligament reconstruction.

Conclusions:

• Partial knee endoprosthesis is a bone-sparing option for young patients with bone sarcomas.
• Improved surgical techniques, rehabilitation, and implant technology enhance functional outcomes.
• This approach allows for bone preservation and less aggressive future revision surgeries.