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[Lateral unicompartmental knee arthroplasty - a challenge].
T Walker1, P R Aldinger2, M R Streit1
1Zentrum für Orthopädie und Unfallchirurgie, Universitätsklinikum Heidelberg, Schlierbacher Landstr. 200a, 69118, Heidelberg, Deutschland.
Operative Orthopadie Und Traumatologie
|December 14, 2016
Summary
This study details a minimally invasive knee surgery for lateral compartment osteoarthritis, showing good revision-free survival rates between 90-98% with low dislocation risk.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Knee Biomechanics
Background:
- Lateral compartment knee osteoarthritis and avascular necrosis of the lateral femoral condyle are common indications for surgical intervention.
- Unicomondylar knee arthroplasty offers a joint-preserving alternative to total knee replacement for specific patient groups.
Purpose of the Study:
- To describe the surgical technique for minimally invasive lateral unicondylar knee arthroplasty.
- To report the clinical outcomes, including dislocation rates and revision-free survival, of this procedure.
Main Methods:
- A minimally invasive parapatellar lateral arthrotomy was performed to access the lateral compartment.
- Osteophytes were removed, and specialized guides were used for precise femoral and tibial bone preparation.
- Components were cemented following trial component insertion and gap balancing.
Main Results:
- Mean follow-up ranged from 1.7 to 4 years.
- The dislocation rate was reported between 0% and 6.6%.
- Revision-free survival rates were high, ranging from 90% to 98%.
Conclusions:
- Minimally invasive lateral unicondylar knee arthroplasty is an effective treatment for lateral compartment knee osteoarthritis.
- The procedure demonstrates favorable short-to-medium term outcomes with low rates of complications such as dislocation.
