Table 4 Literature review for previous studies that compared the outcome results between the PFC Sigma and ATTUNE knee systems
Paper | Year of publication | Type of study | Duration | Sample size | Outcomes | Findings |
|---|---|---|---|---|---|---|
Indelli, et al. [31] | 2016 | Prospective, matched-pair | 2 years | 200 | KSS, ROM, Oxford knee score, satisfaction rate | ATTUNE had a significantly lower incidence of anterior knee pain (2% vs. 9%, p = 0.006), but significantly higher ROM (123 degrees vs. 115 degrees, p = 0.0009) |
Ranawat, et al. [7] | 2017 | Prospective, matched-pair | 2 years | 200 | KSS, anterior knee pain, crepitation, satisfaction rate | ATTUNE had a significantly lower incidence of anterior knee pain (12.5% vs. 25.8%, p = 0.02) and crepitation (17.7% vs. 30.9%, p = 0.02) |
Martin, et al. [32] | 2017 | Retrospective | 2 years | 1893 | KSS, ROM, crepitation | ATTUNE had a significantly lower incidence of crepitation (0.8% vs. 9.4%, p < 0.001) |
Song, et al. [33] | 2018 | Prospective | 2 years | 600 | KSS, ROM, risk of patella injury | ATTUNE had a significantly higher knee score domain in the KSS (93.1 vs. 88.8 points, p < 0.001) and ROM (131.4 vs. 129.0 degrees, p = 0.008) |
Chua, et al. [28] | 2019 | Prospective | 2 years | 130 | KSS, ROM, Oxford knee score, Short Form-36, satisfaction rate | No significant differences in any outcome measurements |
Molloy, et al. [29] | 2019 | Prospective | 2 years | 2116 | Patient-reported outcome measures, ROM, reoperative rate | No significant differences in any outcome measurements |
Hauer, et al. [27] | 2020 | Randomized control trial | 2 years | 158 | KSS, ROM, WOMAC, VAS | No significant differences in any outcome measurements |
White, et al. [23] | 2020 | Combined prospective & retrospective, matched-pair | 5 years | 154 | KSS, WOMAC, anterior knee pain, crepitation, residual pain, satisfaction rate | ATTUNE had a significantly lower incidence of residual pain (19.5% vs. 36.3%, p = 0.02) |
Maniar, et al. [30] | 2020 | Prospective, matched-pair | 2 years | 144 | New KSS, ROM, WOMAC, anterior knee pain, crepitation | No significant differences in any outcome measurements |
The present study | Retrospective | 5 year | 113 | Modified knee score, ROM, NRS-pain, TUG, 2MWT, anterior knee pain, crepitation, patellar clunk | ATTUNE had a significantly higher ROM at the 5-year postoperative follow-up (115.8 vs. 110.0 degrees, p = 0.041) |