Large Osseous Defect Reconstruction Using a Custom Three-Dimensional Printed Titanium Truss Implant.

Area of Science:

• Orthopedic Surgery
• Biomaterials Engineering
• Reconstructive Surgery

Background:

• Large osseous defects in the foot and ankle present significant reconstructive challenges.
• Traditional autografts and allografts often fail due to late collapse and poor shape conformity.
• Defects commonly arise from failed bunionectomies, ankle replacements, and osteotomies.

Purpose of the Study:

• To evaluate the efficacy of custom 3D-printed titanium truss implants for reconstructing large osseous defects in the foot and ankle.
• To assess implant incorporation, patient pain levels, and functional recovery.
• To explore the potential of this technology in limb salvage procedures.

Main Methods:

• A case series involving 3 patients with large osseous defects.
• Utilized patient-specific custom 3D titanium truss implants (4WEB Medical) for reconstruction.
• Follow-up included clinical assessment and 12-month postoperative computed tomography (CT) scans.

Main Results:

• Significant improvement in patient pain and successful return to daily activities.
• Postoperative CT scans at 12 months showed excellent implant incorporation with surrounding bone.
• No instances of stress shielding or implant failure were observed during the follow-up period.

Conclusions:

• Custom 3D-printed titanium truss implants are effective for reconstructing large osseous defects in the foot and ankle.
• This technology offers a viable alternative to traditional bone grafting methods, potentially enhancing limb salvage.
• Further investigation into this innovative approach for complex orthopedic reconstructions is warranted.