Knee joint prosthesis and tibial component and femoral component thereof

Abstract

A knee joint prosthesis and a tibial component thereof and a femoral component thereof are disclosed. The knee joint prosthesis includes a tibial component and a femoral component. The tibial component has a top surface, a bottom surface opposite the top surface and a first slot passing through the top surface and the bottom surface for accommodating a cruciate ligament. The tibial component has at least one first protrusion disposed on the bottom surface, and the first protrusion has a plurality of first through holes. The femoral component is carried by the tibial component and has a second slot for accommodating the cruciate ligament. The femoral component has at least one second protrusion disposed on a surface thereof against the tibial component, and the second protrusion has a plurality of second through holes.

What is claimed is: 
     
         1 . A knee joint prosthesis, comprising:
 a tibial component, including a top surface, a bottom surface opposite to the top surface and a first slot passing through the top surface and the bottom surface for accommodating a cruciate ligament, wherein the tibial component includes at least one first protrusion disposed on the bottom surface, and the first protrusion includes a plurality of first through holes; and   a femoral component, carried by the tibial component and including a second slot for accommodating the cruciate ligament, wherein the femoral component includes at least one second protrusion disposed on a surface thereof against the tibial component, and the second protrusion includes a plurality of second through holes.   
     
     
         2 . The knee joint prosthesis of  claim 1 , wherein the tibial component includes at least one sidewall and an engagement groove, and the sidewall surrounds the first slot and the engagement groove is disposed on the sidewall. 
     
     
         3 . The knee joint prosthesis of  claim 1 , wherein the first protrusion includes a first cutting edge and a first base, the first base is disposed between the first cutting edge and the bottom surface of the tibial component, and the first cutting edge gradually becomes thinner along the extending direction thereof. 
     
     
         4 . The knee joint prosthesis of  claim 3 , wherein the tibial component includes at least one through hole which does not overlap with the first base. 
     
     
         5 . The knee joint prosthesis of  claim 1 , wherein the tibial component includes a first side wall having a plurality of first apertures. 
     
     
         6 . The knee joint prosthesis of  claim 1 , wherein the femoral component includes at least two holding notches respectively located at two sides thereof. 
     
     
         7 . The knee joint prosthesis of  claim 1 , wherein the second protrusion includes a second cutting edge and a second base, the second base is disposed between the second cutting edge and the surface of the femoral component away from the tibial component, and the second cutting edge gradually becomes thinner along the extending direction thereof. 
     
     
         8 . The knee joint prosthesis of  claim 1 , wherein the second protrusion includes at least one position pillar which is disposed on the middle segment of the second protrusion. 
     
     
         9 . The knee joint prosthesis of  claim 1 , further comprising at least one pad located between the tibial component and the femoral component. 
     
     
         10 . The knee joint prosthesis of  claim 9 , wherein the pad includes a second side wall having a plurality of second apertures. 
     
     
         11 . The knee joint prosthesis of  claim 9 , wherein the pad includes an abrasion meter. 
     
     
         12 . A tibial component, comprising:
 a top surface, a bottom surface opposite to the top surface, and a slot passing through the top surface and the bottom surface for accommodating a cruciate ligament, wherein the tibial component includes at least one protrusion disposed on the bottom surface and the protrusion includes a plurality of through holes.   
     
     
         13 . The tibial component of  claim 12 , wherein the tibial component includes at least one sidewall and an engagement groove, and the sidewall surrounds the slot and the engagement groove is disposed on the sidewall. 
     
     
         14 . The tibial component of  claim 12 , wherein the protrusion includes a cutting edge and a base, and the base is disposed between the cutting edge and the bottom surface of the tibial component, and the cutting edge gradually becomes thinner along the extending direction thereof. 
     
     
         15 . The tibial component of  claim 12 , wherein the tibial component includes at least one through hole which does not overlap with the base. 
     
     
         16 . The tibial component of  claim 12 , wherein the tibial component includes a first side wall having a plurality of first apertures. 
     
     
         17 . A femoral component, disposed corresponding to a tibial component, wherein the tibial component carries the femoral component, the femoral component comprises:
 a slot for accommodating a cruciate ligament, wherein the femoral component includes at least one protrusion on a surface thereof against the tibial component, and the protrusion includes a plurality of through holes.   
     
     
         18 . The femoral component of  claim 17 , wherein the femoral component comprises two holding notches respectively located at two sides thereof. 
     
     
         19 . The femoral component of  claim 17 , wherein the protrusion includes a cutting edge and a base, the base is disposed between the cutting edge and the surface of the femoral component away from the tibial component, and the cutting edge gradually becomes thinner along the extending direction thereof. 
     
     
         20 . The femoral component of  claim 17 , wherein the protrusion includes at least one position pillar disposed on the middle segment of the protrusion.