Related Experiment Video
Updated: Jan 17, 2026
09:51
The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
Published on: September 7, 2022
3.5K
Contralateral Total Knee Arthroplasty More Than One Year Apart: Do Patient-Reported Outcomes and Health Care
Alvaro Ibaseta1, Shujaa T Khan1, Ignacio Pasqualini1
1Department of Orthopaedic Surgery, Cleveland Clinic Foundation, Cleveland, Ohio.
The Journal of Arthroplasty
|September 19, 2025
Summary
Patients undergoing staged total knee arthroplasty (TKA) experience poorer baseline function before the first surgery but show significant improvement. Both TKA procedures yield meaningful clinical benefits and improved function.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Rehabilitation Medicine
Background:
- Evaluating patient-reported outcomes and healthcare utilization for staged contralateral total knee arthroplasty (TKA).
- Analyzing outcomes for TKA procedures performed more than one year apart.
Purpose of the Study:
- Compare health care utilization and patient-reported outcomes between first and second TKA surgeries.
- Assess functional improvements and satisfaction after staged contralateral TKA.
Main Methods:
- Retrospective cohort study of 573 patients undergoing contralateral TKA (>1 year apart).
- Utilized Knee Disability and Osteoarthritis Outcome Score (KOOS) and Veterans Rand-12 scores.
- Assessed minimal clinically important differences (MCIDs) and Patient Acceptable Symptom State.
Main Results:
- Patients had lower baseline scores before the first TKA compared to the second.
- Greater improvement in KOOS domains observed after the first TKA.
- Shorter length of stay after the second TKA; no difference in readmission rates.
Conclusions:
- Contralateral TKA patients present with poorer baseline status before the first surgery.
- Meaningful clinical improvements are expected after both TKA procedures.
- Healthcare utilization may be reduced after the second TKA surgery.
