Table 2.

Results of the different series of medial and lateral UKA in the literature

Authors	Date of publication	Number of evaluated UKAs	Type of implant	Number of surgeons	Mean followup (years)*	Survivorship (number of revisions)
Medial UKA
Marmor [23]	1986	53	Cemented all poly tibia	1	11 (10–13)	70% at 10 years (20)
Squire et al. [34]	1999	48	Cemented all poly tibia	1	18 (15.8–21.8)	84% at 22 years (5)
Argenson et al. [2]	2002	145	Cemented, metal-backed, fixed-bearing	2	5.5 (3–9.33)	94% at 10 years (5)
Perkins and Gunckle [31]	2002	40	Cemented, metal-backed (60%); all poly (40%)	1	6 (3–10)	74% at 10 years (6)
Gioe et al. [16]	2003	474	Nine different designs	23	NA	88.6% at 10 years (36)
Naudie et al. [25]	2004	113	Cemented, metal-backed, fixed-bearing	NA	10 (2–14)	86 % at 10 years (11)
Berger et al. [6]	2005	62	Cemented, metal-backed, fixed-bearing	3	12 (10–13)	95.7 % at 13years (2)
O’Rourke et al. [26]	2005	122	Cemented all poly tibia	1	24 (17–28)	72% at 25 years (17)
Eickmann et al. [10]	2006	411	12 different designs	1	9 (0.1–19.3)	80% at 9 years (96)
Lateral UKA
Marmor [22]	1983	14	Cemented all poly tibia	1	7.4 (2.5–9.83)	NA (2)
Gunther et al. [17]	1996	53	Cemented, metal-backed, mobile-bearing	2	5 (2.5–9.83)	82% at 5 years (11)
Ohdera et al. [27]	2001	18	Four different designs	NA	8.25 (5–15.75)	NA (2)
Ashraf et al. [5]	2002	83	Cemented all poly tibia	4	9 (2–21)	74% at 15years (15)
O’Rourke et al. [26]	2005	14	Cemented all poly tibia	1	24 (17–28)	72% at 25 years (2)
Pennington et al. [30]	2006	29	Cemented, metal-backed (75%); all poly tibia (25%)	NA	12.4 (3.1–15.6)	100% at 12.4 years (0)
Sah and Scott [32]	2007	49	Three different designs	1	5.2 (2–14)	100% at 5.4 years (0)
Our series		38	Four different designs	2	12.6 (3–23)	84% at 16 years (5)

* Ranges in parentheses; UKA = unicondylar knee arthroplasty; NA = not available.