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. Author manuscript; available in PMC: 2018 Mar 28.
Published in final edited form as: Knee. 2017 Feb 6;24(2):419–428. doi: 10.1016/j.knee.2016.12.001

Table 1. Revisions per 100 observed years (annual revision rate) in different age groups.

Age group Mean Age Number of UKA Mean follow-up (months) Number of Revisions Total Observed years Annual Revision Rate
≤ 59 years 54.3 154 29.2 4 374.5 1.07
60 - 69 65.3 323 29.1 3 784.4 0.38
70 - 79 74.7 303 30.2 3 761.8 0.39
≥ 80 years 83.1 129 29.9 1 321.9 0.31
Total 69.1 909 29.6 11 2242.2 0.49

UKA indicates unicompartmental knee arthroplasty.