Relationship between the location of the popliteal artery and the tibial osteotomy plane in patients with medial and lateral unicompartmental knee arthroplasty: A retrospective analysis of preoperative magnetic resonance imaging and intraoperative findings

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Table 1

Demographic data of the included patients.

Characteristics	Group M (n = 41)	Group L (n = 9)	P value
Mean age (years)*	73.4 (5.2)	69.3 (10.0)	0.09
BMI (kg/m²)*	24.4 (3.3)	23.3 (4.4)	0.41
Male**	12 (29.2%)	1 (11.1%)	0.41
Female**	29 (70.7%)	8 (88.9%)	0.41
HKA*	4.3 (3.4)°	0.7 (2.9)°	0.01
KL grade 2**	10 (24.4%)	2 (22.2%)	1.0
KL grade 3**	20 (48.8%)	5 (55.6%)
KL grade 4**	11 (26.8%)	2 (22.2%)

Data are expressed as mean (standard deviation).

Comparison between groups using t-test.

^**

Comparison between groups using Fisher’s exact test.

NS, not significant; BMI, body mass index; HKA, Hip–Knee–Ankle angle; KL, Kellgren–Lawrence classification.

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