Fractures in Oxford unicompartmental knee arthroplasty are associated with a decreased medial keel-cortex distance of the tibial implant

Table 2 Preoperative measurement of the leg alignment and the ICCa

	Non-fracture (n = 1834)	Fracture (n = 19)	p-Value	ICC (95%)
				Intrarater ICC	Interrater ICC
HKA [°]	173.6 (171.4–176.0)*	172.2 (171.2–173.9) **	0.279	0.96 (0.94–0.98)	0.96 (0.93–0.98)
MPTA [°]	86.4 (85.1–87.6)	86.6 (84.9–87.7)	0.857	0.93 (0.89–0.96)	0.87 (0.76–0.93)
PTS [°]	7.7 (5.4–10.0)	10.4 (8.6–11.1)	< 0.001	0.94 (0.91–0.97)	0.94 (0.89–0.97)

Values are displayed as medians with interquartile ranges (Q1 25%–Q3 75%). The data were tested using the Mann–Whitney U test to compare differences between groups
HKA hip-knee-ankle angle, MPTA medial proximal tibia angle, PTS posterior tibial slope, CI confidence interval
*Available in 1257 cases
**Available in 12 cases

ISSN: 2234-2451