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©The Author(s) 2025.
World J Orthop. Jul 18, 2025; 16(7): 106281
Published online Jul 18, 2025. doi: 10.5312/wjo.v16.i7.106281
Published online Jul 18, 2025. doi: 10.5312/wjo.v16.i7.106281
Table 1 Patient demographics and reasons for revision of Truliant posterior stabilized compared to aggregate posterior stabilized, n (%)
Characteristic | Truliant PS (n = 1687) | Aggregate PS (n = 523234) | P value |
Average age, years (SD) | 67.2 (9.7) | 67.3 (9.4) | 0.56 |
Average follow-up, months (SD) | 31.2 (16.5) | 56.5 (28.7) | < 0.001 |
Sex | 0.51 | ||
Male | 650 (38.5) | 205110 (39.3) | |
Female | 1037 (61.5) | 316630 (60.7) | |
Missing | 0 | 1494 | |
Charlson index, mean (SD) | 2.57 (1.41) | 2.71 (1.47) | < 0.001 |
Fallout due to patient death | 1 (0.06) | 3921 (0.75) | 0.001 |
Primary osteoarthritis diagnosis | < 0.001 | ||
Yes | 1517 (93.3) | 497650 (97.3) | |
No | 109 (6.7) | 13942 (2.7) | |
Reason for revision | |||
All cause | 26 (1.54) | 10499 (2.0) | 0.17 |
Mechanical complications | 3 (0.18) | 803 (0.15) | 0.80 |
Mechanical loosening | 4 (0.24) | 1743 (0.33) | 0.49 |
Instability | 4 (0.24) | 1152 (0.22) | 0.88 |
Infection | 9 (0.53) | 2964 (0.57) | 0.86 |
Periprosthetic fracture | 0 (0) | 171 (0.03) | 0.46 |
Other fractures | 0 (0) | 424 (0.08) | 0.24 |
Fracture or related sequelae | 0 (0) | 448 (0.09) | 0.23 |
Articular surface wear | 0 (0) | 38 (0.01) | 0.73 |
Pain | 0 (0) | 1175 (0.22) | 0.05 |
Hematoma or wound complication | 0 (0) | 302 (0.06) | 0.32 |
All other diagnoses | 6 (0.36) | 2921 (0.56) | 0.26 |
Table 2 Patient demographics and reasons for revision of Truliant cruciate retaining compared to aggregate cruciate retaining, n (%)
Characteristic | Truliant CR (n = 653) | Aggregate CR (n = 537840) | P value |
Age, years (SD) | 68 (9.1) | 67.3 (9.3) | 0.045 |
Average follow-up, months (SD) | 28.0 (13.4) | 52.4 (29.6) | < 0.001 |
Sex | 0.12 | ||
Male | 240 (36.8) | 213312 (39.7) | |
Female | 413 (63.3) | 323421 (60.3) | |
Missing | 0 | 1107 | |
Charlson index, mean (SD) | 2.74 (1.37) | 2.68 (1.42) | 0.32 |
Fallout due to patient death | 1 (0.15) | 3419 (0.64) | 0.12 |
Primary osteoarthritis diagnosis | < 0.001 | ||
Yes | 561 (90.2) | 513415 (97.7) | |
No | 61 (9.8) | 11846 (2.3) | |
Reason for revision | |||
All cause | 2 (0.31) | 6974 (1.3) | 0.025 |
Mechanical complications | 0 (0) | 486 (0.09) | 0.44 |
Mechanical loosening | 0 (0) | 878 (0.16) | 0.3 |
Instability | 0 (0) | 855 (0.16) | 0.31 |
Infection | 0 (0) | 2078 (0.39) | 0.11 |
Periprosthetic fracture | 0 (0) | 60 (0.01) | 0.79 |
Other fractures | 0 (0) | 217 (0.04) | 0.61 |
Fracture or related sequelae | 0 (0) | 222 (0.04) | 0.6 |
Articular surface wear | 0 (0) | 55 (0.01) | 0.8 |
Pain | 0 (0) | 819 (0.15) | 0.32 |
Hematoma or wound complication | 0 (0) | 179 (0.03) | 0.64 |
All other diagnoses | 2 (0.31) | 2133 (0.4) | 0.71 |
Table 3 Cumulative percent revision rates for Truliant posterior stabilized compared to aggregate posterior stabilized
Years to revision | Cumulative percent revision % (number at risk) | |
Truliant PS (n = 1687) | Aggregate PS (n = 524921) | |
0 | 0.07 (1687) | 0.06 (521740) |
1 | 0.82 (1398) | 0.8 (484679) |
2 | 1.37 (1045) | 1.34 (435662) |
3 | 1.76 (718) | 1.73 (385269) |
4 | 2.05 (366) | 2.01 (320979) |
5 | 2.26 (121) | 2.22 (243128) |
6 | 2.42 (21) | 2.37 (162578) |
7 | 2.53 (21) | 2.48 (97209) |
8 | 2.64 (21) | 2.58 (49027) |
9 | 2.71 (01) | 2.65 (18461) |
Table 4 Cumulative percent revision rates for Truliant cruciate retaining compared to aggregate cruciate retaining
Years to revision | Cumulative percent revision % (number at risk) | |
Truliant CR (n = 653) | Aggregate CR (n = 537840) | |
0 | 0.01 (653) | 0.02 (536733) |
1 | 0.18 (544) | 0.57 (486846) |
2 | 0.31 (398) | 0.95 (420494) |
3 | 0.39 (208) | 1.2 (360904) |
4 | 0.44 (351) | 1.37 (290143) |
5 | 0.48 (11) | 1.51 (216888) |
6 | 0.52 (11) | 1.60 (147845) |
7 | 0.54 (11) | 1.67 (89727) |
8 | 0.56 (11) | 1.73 (45593) |
9 | 0.56 (01) | 1.75 (17960) |
Table 5 Cumulative percent revision rates across the American Joint Replacement Registry, Australian Orthopaedic Association National Joint Replacement Registry, and United Kingdom National Joint Registry
Registry | PS | CR/minimally stabilized/unconstrained | ||
1 year, rate (95%CI) | 3 years, rate (95%CI) | 1 year, rate (95%CI) | 3 years, rate (95%CI) | |
AJRR (Truliant data) | 0.82 (0.51-1.13) | 1.76 (1.09- 2.43) | 0.18 (0-0.44) | 0.39 (0-0.92) |
AJRR (non-Truliant data) | 0.8 (0.78-0.83) | 1.73 (1.69-1.77) | 0.57 (0.55-0.59) | 1.2 (1.17-1.23) |
AOANJRR (all non-Truliant data)[13] | 1.2 (1.1-1.2) | 2.8 (2.7-2.9) | 0.9 (0.9-0.9) | 2.3 (2.3-2.4) |
UK NJR (all non-Truliant data)[14] | 0.48 (0.45-0.5) | 1.65 (1.6-1.7) | 0.38 (0.37-0.40) | 1.33 (1.30-1.36) |
- Citation: Jones K, Muehlmann AM, Musgrave M, Penrose CT. Short-term survivorship of Truliant® total knee arthroplasty implants utilizing the American Joint Replacement Registry. World J Orthop 2025; 16(7): 106281
- URL: https://www.wjgnet.com/2218-5836/full/v16/i7/106281.htm
- DOI: https://dx.doi.org/10.5312/wjo.v16.i7.106281