Impact of implant design on the Forgotten Joint Score: a retrospective study comparing two contemporary knee designs

Keywords:

Published online: Oct 21 2024

https://doi.org/10.52628/90.2.9079

G. PEERSMAN1,2, C. STRUIJK3, G. DELRUE1, S. GOES3, B. STUYTS3

1 ZNA Stuivenberg, Antwerp, Belgium
2 Institute for Orthopaedic Research and Training, KU Leuven, UZ Leuven, Leuven, Belgium
3 Sint Augustinus Hospital, Wilrijk, Belgium

Abstract

This retrospective study was designed to assess two fixed bearing total knee design concepts and their clinical outcomes, particularly in Forgotten Joint Score-12 (FJS-12).

Patients were assessed clinically using the Knee Society Score (KSS). Participants completed an FJS-12 and a short form of the Knee Injury and Osteoarthritis Outcome Score (KOOS-PS). A total of 216 knees –76 with Genesis II and 150 with Vanguard total knee arthroplasties – were included.

Patients in the Vanguard group had significantly better postoperative FJS-12 scores (by 10.1 points, p = 0.019). Differences in KSS subscores also reached the level of statistical significance. KOOS-PS did not differ significantly.

Statistically significant differences between the two knee designs on FJS-12, KS and FS assessments were revealed, but overall, these differences may not reach the threshold of clinical significance.