Cemented and uncemented tibial components had different migration patterns .
For cemented tibial components there was no difference in migration between all-poly and metal-backed components , between mobile bearing and fixed bearing , between cruciate retaining and posterior stabilized .
Furthermore , no difference existed between TKR measured with model-based RSA or marker-based RSA methods .
For uncemented TKR there was some variation in migration with the highest migration for uncoated TKR .
Interpretation - The results from this meta- analysis on  RSA migration of TKR  are in line with both the survival analyses results from joint registries of these TKRs as well as revision rates results from meta-analyses , thus providing further proof for the association between early migration and late revision for loosening .
Purpose - We performed a systematic review and meta-analyses to evaluate the early and long-term migration patterns of  tibial components of TKR of all known RSA studies .
Survival of knee arthroplasties. A nation-wide multicentre investigation of 8000 cases.
A prospect i ve nation-wide study of  knee arthroplasty  has been under way in Sweden since October 1975 . By the end of 1983 , 4505 arthroplasties for osteoarthritis and 3495 for rheumatoid arthritis had been recorded and review ed one , three and six years after the operation . Using actuarial methods , the probability of the prosthesis remaining in situ after six years was calculated . In osteoarthritis this probability ranged from 65 % for hinged prostheses to 90 % for medial compartment prostheses . Two- and three-compartment prostheses produced intermediate results with 87 % survival . In rheumatoid arthritis the probability varied from 72 % for medial compartment prostheses to 90 % for two- and three-compartment prostheses . The main reason for failure was loosening of the components , the second most common was infection . The probability of revision for infection by six years was 2 % in osteoarthritis and 3 % in rheumatoid arthritis . Most revisions were to a three-compartment prosthesis .  Knee fusion at primary revision was required in 2 % of the cases at six years
Cemented and uncemented tibial components had different migration patterns .
For cemented tibial components there was no difference in migration between all-poly and metal-backed components , between mobile bearing and fixed bearing , between cruciate retaining and posterior stabilized .
Furthermore , no difference existed between TKR measured with model-based RSA or marker-based RSA methods .
For uncemented TKR there was some variation in migration with the highest migration for uncoated TKR .
Interpretation - The results from this meta- analysis on  RSA migration of TKR  are in line with both the survival analyses results from joint registries of these TKRs as well as revision rates results from meta-analyses , thus providing further proof for the association between early migration and late revision for loosening .
Purpose - We performed a systematic review and meta-analyses to evaluate the early and long-term migration patterns of  tibial components of TKR of all known RSA studies .