Patient-specific scaphoid prosthesis: surgical technique

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering
• Hand Surgery

Background:

• The scaphoid bone is critical for wrist function, including stability, force transmission, and kinematics.
• Non-reconstructable scaphoid injuries pose challenges to preserving wrist function.
• Historically, scaphoid replacement has evolved, with recent advancements enhancing its efficacy.

Purpose of the Study:

• To present a refined technique for scaphoid replacement using patient-specific prostheses.
• To reconstruct intrinsic and extrinsic ligaments for optimal wrist stability and mobility.
• To address the limitations of non-reconstructable scaphoid bone cases.

Main Methods:

• Utilizing patient-specific implant design based on advanced imaging.
• Employing additive manufacturing (3D printing) for prosthesis creation.
• Performing surgical reconstruction of intrinsic and extrinsic wrist ligaments.

Main Results:

• Successful restoration of carpal alignment and motion in cases of non-reconstructable scaphoid bone.
• Achieved optimal wrist stability and mobility through prosthesis and ligament reconstruction.
• Demonstrated the benefit of integrating modern technologies in orthopedic implants.

Conclusions:

• Patient-specific scaphoid replacement is a viable treatment for non-reconstructable scaphoid bone injuries.
• The presented technique effectively restores wrist function, stability, and mobility.
• Advancements in technology significantly improve outcomes for scaphoid replacement surgery.