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The graph shows angular deviation between each knee flexion axis and the CT-TEA, denoted by the solid line at zero. The error bars represent 95% confidence intervals about the mean. FFA = functional flexion axis; TEA = transepicondylar axis; FFA1 = preincision FFA; FFA2 = postincision FFA; PCA-3 = posterior condylar axis externally rotated by 3°; Cyl = cylinder.
