Cost-effectiveness analysis of custom total knee cutting blocks

Area of Science:

• Orthopedic surgery
• Medical device technology
• Health economics

Background:

• Custom cutting blocks offer potential for improved accuracy in total knee arthroplasty.
• Traditional instrumentation is the current standard of care for total knee replacement surgery.
• Assessing the economic viability of novel surgical tools is crucial for adoption.

Purpose of the Study:

• To evaluate the cost-effectiveness of custom cutting blocks versus traditional instrumentation in total knee arthroplasty.
• To determine the necessary improvements in patient outcomes for custom blocks to be economically viable.
• To inform stakeholders about the financial implications of adopting custom cutting block technology.

Main Methods:

• A Markov decision model was employed for the cost-effectiveness analysis.
• Comparison was made between custom cutting blocks and traditional surgical guides.
• The model simulated costs and outcomes over time for total knee arthroplasty patients.

Main Results:

• Routine use of custom cutting blocks is not currently cost-effective for total knee arthroplasty.
• A significant reduction in the revision rate is required to achieve cost-effectiveness.
• The necessary revision rate reduction is directly proportional to the cost of the custom blocks.

Conclusions:

• Custom cutting blocks for total knee arthroplasty require substantial evidence of improved outcomes, specifically reduced revision rates, to justify their cost.
• Further research is essential to ascertain if custom blocks can deliver the necessary clinical improvements.
• Patients, surgeons, payers, and healthcare institutions should carefully weigh the current evidence before supporting the widespread adoption of this technology.