Unicompartmental knee arthroplasty: past, present, and future

Area of Science:

• Orthopedic surgery
• Biomedical engineering
• Rheumatology

Background:

• Unicompartmental knee arthroplasty (UKA) has over 30 years of history treating tibiofemoral joint arthritis.
• Early negative reports have been overcome by procedural evolution, establishing UKA as a reliable and safe treatment option.

Purpose of the Study:

• To review the indications, outcomes, and patient selection criteria for Unicompartmental knee arthroplasty.
• To compare UKA with total knee arthroplasty (TKA) in terms of range of motion, patient satisfaction, and longevity.

Main Methods:

• Review of historical data and clinical outcomes of UKA procedures.
• Analysis of patient selection criteria, including localized pain, preserved range of motion, and isolated tibiofemoral disease.
• Comparative assessment of UKA versus TKA outcomes.

Main Results:

• Successful UKA outcomes depend on precise patient selection, meticulous surgical technique, and avoiding deformity overcorrection.
• UKA is indicated for patients with localized pain, good range of motion, and isolated tibiofemoral disease.
• UKA demonstrates potential for greater range of motion and higher patient satisfaction compared to TKA, with similar midterm longevity.

Conclusions:

• Unicompartmental knee arthroplasty is a viable and safe surgical option for specific knee arthritis cases.
• Careful patient selection and surgical execution are paramount for achieving optimal results with UKA.
• UKA offers advantages in range of motion and patient satisfaction over TKA for appropriate candidates.