Table 1 Sulcus height (mm) in cross-sections of the femoral trochlea, as measured in threedimensional models of native and prosthetic knees (n = 42)

MP

18.5 (1.4)

16.8 (1.5)^*

20.3 (1.8)^*

Triathlon

19.2 (1.4)^*

17.0 (1.5)^*

-

NRG

20.1 (1.4)^*

17.8 (1.5)

-

NexGen

19.3 (1.5)^*

16.9 (1.5)^*

-

Native knee

18.5 (1.4)^*a

18.2 (1.3)^*a

18.8 (1.2)^*a