Replacement of a destroyed scaphoimodelled prosthesis

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering

Background:

• Preiser disease involves avascular necrosis of the scaphoid bone without prior fracture, leading to severe wrist pain and functional impairment.
• Traditional treatments for advanced scaphoid collapse, such as proximal row carpectomy or fusion, may not always restore full function.

Observation:

• A female patient in her 30s with Preiser disease experienced persistent pain despite a vascularized bone graft.
• Four years post-diagnosis, a 3D modeled scaphoid prosthesis was implanted.
• Three years after prosthesis implantation, the patient reported significant pain reduction and improved wrist function and grip strength.

Findings:

• The 3D modeled scaphoid prosthesis demonstrated no signs of dislocation or periprosthetic arthritis on final X-rays.
• This case highlights the successful use of a custom prosthesis in managing advanced Preiser disease with collapse.
• The patient achieved good functional recovery and pain relief following the prosthetic replacement.

Implications:

• 3D modeled prostheses offer a viable alternative for treating complex scaphoid pathologies like Preiser disease, especially after treatment failures.
• This technology may provide a solution for restoring wrist function and quality of life in patients with limited treatment options.
• Further research into custom prosthetic solutions for carpal bone necrosis is warranted to validate these findings in larger cohorts.