Background

We report 10-year outcomes in patients undergoing bicompartmental knee arthroplasty (BCKA) using the Journey-Deuce prosthesis.

Methods

Between November 2006 and November 2009, 41 patients with a mean age of 69.6 years (range 51-86) underwent 51 bicompartmental knee arthroplasties with the Journey-Deuce knee prosthesis. All patients presented with medial and patellofemoral compartment osteoarthritis, with intact cruciate ligaments and a preserved lateral compartment on plain radiographs and Magnetic Resonance Imaging (MRI). Clinical assessment was undertaken pre-surgery and at 1, 2, 5- and 10-years post-surgery using the Oxford Knee Score (OKS), EuroQol Group 5-Dimension self-reported questionnaire (EQ-5D) and maximal active range of motion (ROM).

Results

A significant improvement (p<0.05) was observed for all clinical scores. The OKS (p<0.0001), EQ-5D (p=0.024) and active knee flexion ROM (p<0.0001) all significantly improved from pre-surgery to 1-year post-surgery, with no further significant changes in these scores between any post-operative time period up until 10 years. No major component revisions have been required over the 10-year period. 32% (7/22) of tibial and 45% (10/22) of femoral components showed progressive radiolucencies between 2-5year and 10-year follow-up. Eight patients (10 knees) were deceased at final review, and 3 could not be contacted.

Conclusions

This is the largest cohort of patients having undergone BCKA (with the Journey-Deuce prosthesis) with longest follow-up described in the literature. At 10 years, patients presented with satisfactory clinical outcomes, no better than TKR. There were no major component revision over the investigation period. Progressive radiolucencies were noted in 32% of tibial and 45% of femoral components without corresponding clinical signs of loosening.