Table 5.
Studies of unicompartmental knee arthroplasty with minimum 10-year followup
| Study | Year | Number of UKAs | Minimum followup (years) (mean) |
Prosthesis design | Bearing | Number of failures (%) | Reason for failure | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Patellofemoral | Adjacent tibiofemoral | Aseptic loosening | Other* |
|||||||
| Marmor [21] | 1988 | 60 | 10 (11) | Marmor | Fixed | 21 (35%) | 2% | 3% | 18% | 12% |
| Weale and Newman [40] | 1994 | 42 | 12 (N/A) | St George Sled | Fixed | 5 (12%) | N/A | N/A | N/A | N/A |
| Cartier et al. [7] | 1996 | 60 | 10 (12) | Marmor | Fixed | 9 (15%) | 0 | 3% | 2% | 10% |
| Squire et al. [37] | 1999 | 140 | 15 (17) | Marmor | Fixed | 14 (10%) | 0 | 5% | 4% | 1% |
| Svard and Price [39] | 2001 | 124 | 10 (13) | Oxford | Mobile | 6 (5%) | 0 | 0 | 2% | 3% |
| Hernigou and Deschamps [10] | 2002 | 99 | 10 (14) | Lotus | Fixed | 22 (22%) | 1% | 3% | 17% | 1% |
| Khan et al. [13] | 2004 | 30 | 10 (N/A) | St George Sled | Fixed | 2 (7%) | 0 | 0 | 3% | 3% |
| Price et al. [31] | 2005 | 114 | 10 (N/A) | Oxford | Mobile | 24 (21%) | 0 | 9% | 5% | 7% |
| Berger et al. [4] | 2005 | 62 | 10 (N/A) | Miller-Galante | Fixed | 2 (3%) | 3% | 0 | 0 | 0 |
| O’Rourke et al. [25] | 2005 | 136 | 21 (N/A) | Marmor | Fixed | 19 (14%) | N/A | 7%† | 6% | 1% |
| Steele et al. [38] | 2006 | 203 | 10 (15) | St George Sled | Fixed | 16 (8%) | 0.5% | 3% | 0.5% | 4% |
| Newman et al. [24] | 2009 | 24 | 15 (15) | St George Sled | Fixed | 4 (17%) | 0 | 8% | 4% | 4% |
| Foran et al. (current study) | 2011 | 62 | 15 (19) | Miller-Galante | Fixed | 4 (6%) | 2% | 2% | 0 | 4% |
* Other causes include: infection, arthrofibrosis, recurrent hemarthrosis, dislocation, instability, polyethelene wear, component fracture, unexplained pain; †the location of disease progression (patellofemoral versus tibiofemoral) not specified; N/A = not available.