Abstract
Purpose
In this study, we report the clinical results of medial UKA in combination with patellofemoral arthroplasty (MUKA/PFA) in 7 cases of bicompartmental osteoarthritis.
Subjects and Methods
Seven patients who received MUKA/PFA between June 2011 and April 2012 were included into the study. There were 1 male and 6 females with an average age of 77 years at time of operation. All those patients were suffering end stage osteoarthritis of both medial and patellofemoral compartments, with obvious clinical and radiological findings. The average follow-up period was 7 months. Patients were clinically examined including JOA score and range of motion (ROM) and radiographs were evaluated.
Results
The mean JOA score improved from a preoperative 55.7 points to 84.4 points at latest follow-up. The mean knee extension angle improved from −4.3? preoperatively to 0?postoperatively, and flexion was almost unchanged from 129.3? to 132.9?. The only complication we experienced was progression of degenerative changes in the lateral compartment in one ACL deficient knee of a 90-years-old female. The mean femoro-tibial angle was corrected from 179.3? to 173.3?. Patello-femoral alignment was improved by the surgery in all knees.
Conclusions
Our results showed that MUKA/PFA is a successful solution for bicompartmental osteoarthiritis of the knee with the involvements of medial femorotibial and patellofemoral joints, and may provide better patient satisfaction then does TKA, although operative criteria for this procedure must be strict. Longer-term follow-up will also be necessary to prove the validity of this procedure.
