Customization of cutting blocks: Can this address the problem?

Area of Science:

• Orthopedic Surgery
• Biomechanical Engineering

Background:

• Recent studies question the necessity of neutral coronal alignment for total knee arthroplasties (TKAs) long-term survival.
• However, substantial evidence links malalignment, particularly varus alignment, to higher TKA failure rates.

Purpose of the Study:

• To evaluate patient-specific custom cutting guides as an alternative to traditional instrumentation and computer navigation for achieving accurate TKA alignment.
• To explore the logistical, patient, and surgeon benefits of using custom cutting guides in TKA procedures.

Main Methods:

• The study reviews literature comparing patient-specific custom cutting guides with conventional instrumentation and computer navigation for TKA.
• Analysis focuses on alignment accuracy, surgical efficiency, and associated benefits.

Main Results:

• Patient-specific guides offer logistical advantages such as reduced operating room time, decreased sterilization needs, and lower inventory requirements.
• Patient benefits may include shorter tourniquet times, less invasive surgery, and improved mechanical alignment for potentially greater implant longevity.
• Surgeons may experience more accurate alignment, increased efficiency, reduced stress, and the capacity for higher surgical volume.

Conclusions:

• Patient-specific custom cutting guides present a viable and beneficial alternative for achieving accurate TKA alignment.
• These guides offer significant advantages for surgical teams, patients, and potentially enhance implant survival rates.