Author | RAQ criteria for radiological bias | Association between malalignment and worse outcome | Sample size | Alignment data | Findings |
---|---|---|---|---|---|
Kim et al. (2014) | Low risk | Yes | 3048 | Femoral component 1735 neutrally aligned group (0–3°), 748 were classed as the flexion group(>3° flexion) and 565 classed as extension group(>1° extension) | No revisions in neutral group. 25 (3.3 %) revisions in the flexion group (p = 0.0029). 5 (0.9 %) revisions in the extension group (p = 0.2) |
Tibial component 2465 in the neutrally aligned group (0–7°), 553 in the abnormally aligned group (<0 and >7°) | Five revisions in neutrally aligned group. 25 revisions in the abnormally aligned group (p < 0.0001) |