[Experience with modular system tumor prostheses].

Area of Science:

• Orthopedic oncology
• Biomedical engineering
• Surgical reconstruction

Background:

• Bone tumors, including primary and metastatic cancers, often necessitate surgical resection of affected bone segments.
• Restoring structural integrity and function after extensive bone resections, particularly around major joints, presents a significant clinical challenge.

Purpose of the Study:

• To describe the design and application of a novel modular tumor prosthesis for reconstructing bone defects.
• To evaluate the initial clinical outcomes and feasibility of using this modular prosthesis in patients undergoing tumor resection.

Main Methods:

• Development and description of a modular tumor prosthesis system.
• Surgical implantation of the modular prosthesis in 10 patients with bone tumors affecting the shoulder, hip, knee, and tibia.
• Clinical assessment of functional outcomes and complications over a 1.5-year period.

Main Results:

• Modular tumor prostheses were successfully implanted in 10 patients (6 primary bone tumors, 4 metastases).
• Prostheses were used for shoulder, hip, knee, and tibia reconstruction.
• Despite two complications, initial functional results were encouraging, preserving limb and articular function in most cases.

Conclusions:

• The modular tumor prosthesis offers a viable solution for reconstructing bone defects following tumor resection.
• This approach allows for tailored reconstruction, potentially preserving limb and joint function.
• Further investigation and longer-term follow-up are warranted to fully assess the efficacy and durability of these prostheses.