Overall , there was a notable enhancement of joint function after the procedure , with a satisfactory mid- and long-term survival of the ceramic components , which is comparable to that of the conventional alloy components reported previously .
However , revision due to aseptic loosening , wear , and component fracture appeared to be rare , demonstrating the safety of in vivo use of ceramic bearings in the TKA procedure .
Conclusions Ceramic TKA implants show similar post-operative clinical results and survival rate compared to their conventional metallic counterparts .
Our results confirmed the safety of in vivo use of ceramic bearings in TKA , with rare implant breakage and aseptic loosening .
Purpose Ceramic bearings have been widely used in total hip arthroplasty ( THA ) , which result ed in satisfactory clinical outcomes due to the excellent tribological characteristics of the implants .
However , ceramic components are not commonly used in total knee arthroplasty ( TKA ) because of brittleness .
This study aim ed to gather and analyze information regarding the clinical outcomes ( including survival without revision , causes of revision , functional outcome , and incidence of loosening ) and reach a definitive conclusion about the use of ceramic femoral components in total knee arthroplasty .
An 11- to 15-year clinical outcome study of the Advance Medial Pivot total knee arthroplasty: pivot knee arthroplasty.
AIMS The Advance Medial-Pivot total knee arthroplasty ( TKA ) was design ed to reflect contemporary data regarding the kinematics of the knee . We wished to examine the long-term results obtained with this prosthesis by extending a previous evaluation . PATIENTS AND METHODS We retrospectively evaluated prospect ively collected data from 225 consecutive patients ( 41 men and 184 women ; mean age at surgery 71 years , 52 to 84 ) who underwent 284 TKAs with a mean follow-up of 13.4 years ( 11 to 15 ) .  Implant failure , complication rate , clinical ( both subjective and objective ) and radiological outcome were assessed . Pre- and post-operative clinical and radiographic data were available at regular intervals for all patients . A total of ten patients ( 4.4 % ; ten TKAs ) were lost to follow-up . RESULTS Survival analysis at 15 years showed a cumulative success rate of 97.3 % ( 95 % confidence interval ( CI ) 96.7 to 97.9 ) for revision for any reason , of 96.4 % ( 95 % CI 95.2 to 97.6 ) for all operations , and 98.8 % ( 95 % CI 98.2 to 99.4 ) for aseptic loosening as an end point . Three TKAs ( 1.06 % ) were revised due to aseptic loosening , two ( 0.7 % ) due to infection , one ( 0.35 % ) due to instability and one ( 0.35 % ) due to a traumatic dislocation . All patients showed a statistically significant improvement on the Knee Society Score ( p = 0.001 ) , Western Ontario and McMaster University Osteoarthritis Index ( p = 0.001 ) , Short Form-12 ( p = 0.01 ) , and Oxford Knee Score ( p = 0.01 ) . A total of 207 patients ( 92 % ) were able to perform age appropriate activities with a mean flexion of the knee of 117 ° ( 85 ° to 135 ° ) at final follow-up . CONCLUSION This study demonstrates satisfactory functional and radiographic long-term results for this implant . Cite this article : Bone Joint J 2016;98-B:1050 - 5
Overall , there was a notable enhancement of joint function after the procedure , with a satisfactory mid- and long-term survival of the ceramic components , which is comparable to that of the conventional alloy components reported previously .
However , revision due to aseptic loosening , wear , and component fracture appeared to be rare , demonstrating the safety of in vivo use of ceramic bearings in the TKA procedure .
Conclusions Ceramic TKA implants show similar post-operative clinical results and survival rate compared to their conventional metallic counterparts .
Our results confirmed the safety of in vivo use of ceramic bearings in TKA , with rare implant breakage and aseptic loosening .
Purpose Ceramic bearings have been widely used in total hip arthroplasty ( THA ) , which result ed in satisfactory clinical outcomes due to the excellent tribological characteristics of the implants .
However , ceramic components are not commonly used in total knee arthroplasty ( TKA ) because of brittleness .
This study aim ed to gather and analyze information regarding the clinical outcomes ( including survival without revision , causes of revision , functional outcome , and incidence of loosening ) and reach a definitive conclusion about the use of ceramic femoral components in total knee arthroplasty .