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Unicompartmental versus total knee arthroplasty in the same patient. A comparative study
C T Laurencin1, S B Zelicof, R D Scott
1Department of Orthopaedic Surgery, Brigham and Women's Hospital, Boston, Massachusetts.
Clinical Orthopaedics and Related Research
|December 1, 1991
Summary
This study compared unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA), finding patient preference varied, particularly concerning patellar resurfacing in TKAs. Results suggest UKA may offer a better overall feel for some patients.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Patient-Reported Outcomes
Background:
- Unicompartmental knee arthroplasty (UKA) and total knee arthroplasty (TKA) are surgical options for knee osteoarthritis.
- Patient preference and the role of patellar resurfacing in TKA outcomes require further investigation.
Purpose of the Study:
- To compare patient preference between UKA and TKA.
- To specifically evaluate the impact of patellar resurfacing on patient preference in TKA compared to UKA.
Main Methods:
- A cohort of 23 patients received both UKA and TKA during the same hospitalization.
- Patients were divided into two groups: TKA without patellar resurfacing (Group A) and TKA with patellar resurfacing (Group B).
- Patient evaluations included chart review, registry data, and interviews assessing pain, stability, feel, and stair climbing ability.
Main Results:
- Average follow-up was 81 months.
- UKA side showed improved Range of Motion (ROM) from 106 to 123 degrees.
- In Group A (no patellar resurfacing), 31% preferred their UKA knee, 15% preferred their TKA knee, and 54% found no difference.
Conclusions:
- Patient preference between UKA and TKA is influenced by factors beyond range of motion.
- The decision regarding patellar resurfacing in TKA may impact patient satisfaction compared to UKA.
- Further research is needed to elucidate the long-term implications of patellar management in TKA versus UKA.