The Difficult Primary Total Knee Arthroplasty

Area of Science:

• Orthopedic Surgery
• Biomedical Engineering

Background:

• Primary total knee arthroplasty (TKA) for knee arthritis has seen a significant rise.
• Indications for TKA have broadened to include younger, more active patients, elderly patients with comorbidities, and those with complex issues like posttraumatic arthritis or severe deformity.
• TKA is also utilized for salvage procedures after failed unicondylar arthroplasty or osteotomies.

Purpose of the Study:

• To highlight the expanding indications and challenges associated with primary total knee arthroplasty.
• To emphasize the need for surgeons to understand general principles for managing complex TKA cases.
• To underscore strategies for minimizing complications and enhancing outcomes in TKA.

Main Methods:

• Review of current trends and challenges in primary total knee arthroplasty.
• Discussion of patient populations with expanded TKA indications.
• Consideration of surgical techniques for complex deformities and conditions.

Main Results:

• TKA is increasingly performed in diverse patient groups, including younger, older, and complex cases.
• Challenging exposures and outcomes can occur in patients with soft-tissue contractures (stiff knees).
• Bone grafting or augments may be necessary for significant varus or valgus deformities.

Conclusions:

• Total knee arthroplasty is a growing treatment for knee arthritis with expanding indications.
• Surgeons must be aware of specific challenges in TKA, such as deformity, bone loss, contractures, comorbidities, and prior surgeries.
• Adherence to general principles is crucial for minimizing complications and optimizing outcomes in total knee arthroplasty.