Variables | Younger group(≤60 years) | Elderly group(>60 years) | F value/x2 | P value |
---|---|---|---|---|
Knees | 96 | 156 | – | – |
Age(years) | 55.6 ± 4.0 | 69.0 ± 5.9 | −19.70 | < 0.001 |
Sex | 0.231 | 0.631 | ||
female | 68(70.8%) | 106(67.9%) | ||
male | 28(29.2%) | 50(32.1%) | ||
Operation Side | 0.632 | 0.427 | ||
right | 56(58.3%) | 83(53.2%) | ||
left | 40(41.7%) | 73(46.8%) | ||
BMI(Kg/m2) | 26.9 ± 1.6 | 27.2 ± 2.7 | −1.413 | 0.159 |
ASA classification | 0.718 | 0.397 | ||
1 to 2 | 81(84.4%) | 125(80.1%) | ||
3 to 4 | 15(15.6%) | 31(19.9%) | ||
OA grade in MC(KL) | 1.462 | 0.227 | ||
III | 36(37.5%) | 47(30.1%) | ||
IV | 60(62.5%) | 109(69.9%) | ||
Follow-up(months) | 73.6 ± 4.1 | 74.7 ± 6.2 | −1.521 | 0.130 |