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Copyright ©The Author(s) 2019.
World J Orthop. Nov 18, 2019; 10(11): 378-386
Published online Nov 18, 2019. doi: 10.5312/wjo.v10.i11.378
Figure 1
Figure 1 Learning curve for navigated total hip replacements. Segmented linear regression technique was employed to model learning[17]. Line-plateau model fits the data best, with a plateau being attained at 12 operations.
Figure 2
Figure 2 Learning curve for navigated total knee replacements. Segmented linear regression technique was employed to model learning[17]. Line-plateau model fits the data best, with plateau being attained at 26 operations.
Figure 3
Figure 3 Time to surgery for neck of femur fractures. The vertical dashed line marks the onset of a dedicated hip fracture unit. The line-plateau is the best-fitting linear model for the entire period: the line has equation y = −0.0414t + 40.1868; plateau at y = 24.7033 reached after 375 d. The initial drop may be related to the introduction of the Best Practice Tariff. The hip fracture unit did not significantly affect time to surgery[53].