abstract |
A knee prosthesis comprises, in combination, a tibial component 10, a femoral component and two meniscal components 11<U>a</U> and 11<U>b</U>. One of the meniscal components 11<U>a</U> is configured to co-operate with the tibial component 10 such that relative movement therebetween is prevented. The other meniscal component 11<U>b</U> is configured to co-operate with the tibial component such that limited relative movement therebetween is allowed. The tibial component 10 has two fixed bollards 14 and 15 projecting upwardly from an upper surface thereof. The two bollards 14 and 15 have annular outwardly extending portions 22 engageable in corresponding recesses 18<U>a</U> and 19<U>a</U> in the one meniscal component 11<U>a</U> in a snap fit manner. |