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Published on: May 5, 2023
966
Lateral Unicompartmental Knee Arthroplasty
Evan Smith1, Danny Lee1, John Masonis2
1Department of Orthopaedic Surgery, The George Washington University, Washington, DC.
JBJS Reviews
|March 10, 2020
Summary
Lateral unicompartmental knee arthroplasty shows promise for select patients. Further research is needed to expand its indications and address implant design and failure modes for improved outcomes.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Lateral unicompartmental knee arthroplasty (LUKA) demonstrates excellent functional results and implant survival in appropriately selected patients.
- Current research primarily focuses on medial unicompartmental knee arthroplasty (MUKA), necessitating more high-quality studies for LUKA indications.
- Technical challenges and unfamiliarity with LUKA can be mitigated by operative adjuncts like robotics and navigation.
Purpose of the Study:
- To evaluate the current status and future directions for lateral unicompartmental knee arthroplasty.
- To identify areas requiring further research to expand indications and improve outcomes for LUKA.
- To compare LUKA and MUKA, highlighting their distinct procedural nuances.
Main Methods:
- Review of existing literature on lateral unicompartmental knee arthroplasty.
- Analysis of the impact of operative adjuncts and implant designs on LUKA.
- Discussion of potential complications, such as mobile-bearing dislocation.
Main Results:
- LUKA offers excellent functional outcomes and implant survivorship for suitable candidates.
- Operative adjuncts show potential to reduce the technical difficulty of LUKA.
- Limited availability of lateral-specific implants and concerns regarding mobile-bearing device failures require attention.
Conclusions:
- High-quality studies are essential to confirm expanded indications for LUKA.
- Advancements in lateral-specific implants and further evaluation of bearing designs are needed.
- Future research should differentiate between MUKA and LUKA in registry and cohort studies for clearer understanding.
