Open-wedge high tibial osteotomy versus unicompartmental knee arthroplasty: no difference in progression of patellofemoral joint arthritis
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The purpose of this retrospective comparative study was to evaluate and compare, radiographically and clinically, progression of osteoarthritis (OA) in the patellofemoral (PF) compartment after open-wedge high tibial osteotomy (OWHTO), and unicompartmental knee arthroplasty (UKA) over a minimum follow-up of 5 years.
In this study, 42 knees in an OWHTO group were compared with 59 knees in a UKA group in terms of radiographic parameters, such as the grading system for OA progression in the PF compartment, and clinical parameters, such as the PF pain and function scores over a minimum follow-up of 5 years.
There was no significant difference of OA progression in the PF compartment between the two groups on knee radiography. Compared with the preoperative grades, the UKA group showed significant progression of OA in the medial PF compartment at the final follow-up, whereas the medial PF compartment showed significant stepwise progression by only one grade when compared to the OWHTO group. The PF pain and function scores showed no statistical differences between the two groups at the final follow-up, regardless of OA progression.
There was no significant difference between OWHTO and UKA in terms of progression of OA in the PF compartment or deterioration of PF function score over a minimum follow-up of 5 years. However, the medial PF compartment of the UKA group was minimal, and worsened or progressed by only one grade.
Level of evidence
KeywordsPatellofemoral osteoarthritis High tibial osteotomy Unicompartmental knee arthroplasty
This study was supported by Konkuk University.
- 14.Karamitev SS, Stavrev VP, Chifligarov AG (2014) Comparative analysis of the results obtained after unicondylar knee arthroplasty and high tibial osteotomy in isolated gonarthrosis. Folia Med (Plovdiv) 56(1):11–19Google Scholar
- 22.Petersson IF, Boegard T, Saxne T, Silman AJ, Svensson B (1997) Radiographic osteoarthritis of the knee classified by the Ahlback and Kellgren & Lawrence systems for the tibiofemoral joint in people aged 35–54 years with chronic knee pain. Ann Rheum Dis 56(8):493–496CrossRefPubMedPubMedCentralGoogle Scholar
- 27.van Egmond N, van Grinsven S, van Loon CJ, Gaasbeek RD, van Kampen A (2016) Better clinical results after closed- compared to open-wedge high tibial osteotomy in patients with medial knee osteoarthritis and varus leg alignment. Knee Surg Sports Traumatol Arthrosc 24(1):34–41CrossRefPubMedGoogle Scholar