Table 2 Postoperative component alignment
From: Influence of navigation system updates on total knee arthroplasty
(A) Mean degrees of individual component alignment ( ± SD) | |||
|---|---|---|---|
Version 3.1 group | Version 4.0 group | P- value | |
Radiograph | |||
Number | 33 | 49 | |
HKA (°) | 179.8 ± 2.6 | 179.5 ± 1.7 | n.s |
FFC (°) | 90.2 ± 1.6 | 90.6 ± 1.3 | n.s |
FTC (°) | 89.5 ± 1.8 | 90.2 ± 1.3 | n.s |
LTC (°) | 85.5 ± 2.4 | 85.6 ± 1.6 | n.s |
LFC (°) | 5.8 ± 2.8 | 6.7 ± 3.1 | n.s |
CT | |||
Number | 26 | 25 | |
RFC (°) | −0.5 ± 2.3 | 0.2 ± 2.2 | n.s |
RTC (°) | −0.2 ± 3.4 | 1.1 ± 3.4 | n.s |
(B) Ideal implantations | |||
Radiograph | |||
HKA | 84.8% (28/33) | 95.9% (47/49) | n.s |
FFC | 87.8% (29/33) | 91.8% (45/49) | n.s |
FTC | 87.8% (29/33) | 93.9% (46/49) | n.s |
LTC | 81.8% (27/33) | 91.8% (45/49) | n.s |
CT | |||
RFC | 80.7% (21/26) | 84.0% (21/25) | n.s |
RTC | 73.1% (19/26) | 72.0% (17/25) | n.s |