Official Journal of the Italian Society of Orthopaedics and Traumatology
Table 2 Summary of studies comparing cost effectiveness of UKA and TKA
From: Unicompartmental knee arthroplasty, an enigma, and the ten enigmas of medial UKA
S. no. | Author | Year | Type of study | Country | Mean age (years) | Number of cases | Mean hospital stay (days) | Cost effectiveness/comments | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
Based on registry data | UKA | TKA | UKA | TKA | UKA | TKA | |||||
1 | Ghomrawi et al. [162] | 2015 | Markov decision model | Swedish registry | 45–85 | 45–85 | — | — | — | — | 35,000 (85 years) to 46,600 (45 years) USD for UKA versus 42,000 to 47,600 USD for TKA |
2 | Peersman et al. [163] | 2014 | Markov decision model | Belgian registry | — | — | — | — | 3 | 5 | UKA 2807 Euro less costly than TKA |
3 | Willis-Owen et al. [17] | 2009 | Retrospective | UK registry | — | — | — | — | 5.9 | 8.3 | UKA 1761 Euro less costly compared with TKA |
4 | Koskinen et al. [13] | 2008 | Retrospective | Finnish registry | 65 | 70 | 1886 | 48,607 | 8.5 | 10.4 | Costs saved by lower implant prices and shorter hospital stay for UKA would not cover costs of extra revisions. |
5 | Slover et al. [164] | 2006 | Markov decision model | Norwegian registry | — | — | — | — | — | — | UKA 200 USD less costly than TKA |
6 | Robertson et al. [165] | 1999 | Retrospective | Swedish registry | — | — | 10,624 | 15,437 | 10.7 | 12.3 | UKA 1645 USD less costly than TKA |
Based on literature review | |||||||||||
7 | Konopka et al. [159] | 2015 | Markov decision model | USA | — | — | — | — | — | — | 24,636 USD total medical direct cost for UKA compared with 24,761 USD for TKA |
8 | Smith et al. [166] | 2014 | Markov decision model | UK | 70 | 70 | — | — | — | — | 5235 Euro for UKA versus 6805 Euro for TKA |
9 | SooHoo et al. [161] | 2006 | Markov decision model | USA | — | — | — | — | — | — | 2562 USD less lifetime treatment cost with UKA compared with TKA |
Based on within-study analysis data | |||||||||||
10 | Shankar et al. [167] | 2015 | Prospective | USA | 63.9 | 63.9 | 64 | 64 | 2.3 | 3.8 | 11,397 USD for UKA versus 16,243 USD for TKA |
11 | Xie et al. [168] | 2008 | Prospective | Singapore | 63 | 67 | 102 | 431 | 5.3 | 7.7 | 6824 USD for UKA versus 8513 USD for TKA |
12 | Yang et al. [169] | 2003 | Prospective | Singapore | 65.1 | 65.5 | 50 | 50 | 3.6 | 6.9 | 8700 USD for UKA versus 12,000 USD for TKA (total hospital bill) |