Table 2.

Crude septic revision, aseptic revision, and dislocation rates and event density by surgical approach

Outcome	Total	Anterolateral	Direct lateral	Posterior	Direct anterior	Missing
Septic revision, number (%)	213 (0.5)	19 (0.5)	7 (1.1)	158 (0.5)	9 (0.5)	20 (0.5)
Total observation years	146,538	12,952	2202	115,299	2407	13,679
Revisions/100 observation years (% [95% CI])	0.15 (0.13–0.17)	0.15 (0.09–0.23)	0.32 (0.15–0.67)	0.14 (0.12–0.16)	0.37 (0.19–0.72)	0.15 (0.09–0.23)
Aseptic revision, number (%)	785 (1.9)	59 (1.4)	12 (1.8)	612 (1.9)	20 (1.1)	82 (2.1)
Total observation years	146,538	12,952	2202	115,299	2407	13,679
Revisions/100 observation years (% [95% CI])	0.54 (0.5–0.57)	0.46 (0.35–0.59)	0.55 (0.31–0.96)	0.53 (0.49–0.57)	0.83 (0.54–1.29)	0.6 (0.48–0.74)
Dislocation, number (%)	276 (1.2)	8 (0.4)	3 (1.8)	233 (1.4)	9 (0.8)	23 (1.3)
Total observation years	47,453	4368	370	37,361	1562	3793
Dislocations/100 observation years (% [95% CI])	0.58 (0.52–0.65)	0.18 (0.09–0.37)	0.81 (0.26–2.52)	0.62 (0.55–0.71)	0.58 (0.3–1.11)	0.61 (0.4–0.91)

CI = confidence interval.