At minimum 5 years follow-up KSS, KSSF, OKS, FJS and Kujala AKP scores were all statistically significantly greater for the anatomic design than for the NexGen knee system. Range of motion was also significantly higher in the anatomic group¹.

The Kujala AKP score is a recognized measure used within the field of orthopaedics to assess patellofemoral pain¹. The authors acknowledged that anterior knee pain is one of the common factors leading to patient dissatisfaction and revision knee surgeries, and concluded that the lower percentage of patients with residual anterior knee pain in the anatomic group could be attributed to the design modifications of anatomical knee implants¹.

This was a study of 63 patients that received a NexGen CR Knee between January and December 2013, and an Anatomic CR knee on the contralateral side between January and June 2014¹.