Differences in functional recovery after unilateral versus bilateral total knee arthroplasty

Area of Science:

• Orthopedics
• Rehabilitation Medicine
• Biomedical Engineering

Background:

• Functional recovery differences between unilateral and bilateral total knee arthroplasty (TKA) are not well understood.
• Investigating these recovery disparities is crucial for optimizing patient outcomes.

Purpose of the Study:

• To compare the recovery timelines and functional changes in patients undergoing unilateral versus simultaneous bilateral total knee arthroplasty (TKA).

Main Methods:

• Retrospective analysis of 838 patients undergoing TKA.
• Standardized rehabilitation program with pre-operative and 6, 12-week post-operative assessments.
• Utilized self-reported questionnaires and performance-based physical function tests.

Main Results:

• Bilateral TKA patients were younger; no baseline health differences were noted.
• Both groups improved, but bilateral TKA showed delayed recovery in stair-climbing and initial 6-minute walking tests.
• Significant time-by-group interactions observed in timed-up-and-go, 6-minute walking, and stair-climbing tests.

Conclusions:

• Bilateral TKA patients exhibit unique recovery patterns necessitating individualized rehabilitation strategies.
• Pre-operative patient counseling regarding potential recovery differences is essential.