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Table 1 Baseline characteristics

From: Predictive value of adipose to muscle area ratio based on MRI at knee joint for postoperative functional outcomes in elderly osteoarthritis patients following total knee arthroplasty

Parameter Continuous variables: mean ± SD; categorical variables: frequency (%)
Age (years) 67.78 ± 4.91
BMI (kg/m2) 26.90 ± 2.11
Sex
 Male 35 (44.9%)
 Female 43 (55.1%)
AMR 2.36 ± 0.69
Side
 Right 43 (55.1%)
 Left 35 (44.9%)
Follow-up (months) 31.91 ± 6.49
KSS score
 KSS knee-pre 49.14 ± 9.92
 KSS function-pre 56.54 ± 11.47
 KSS total-pre 105.68 ± 20.84
 KSS knee-post 89.91 ± 5.23
 KSS function-post 91.60 ± 6.77
 KSS total-post 181.51 ± 11.05
HSS score
 HSS-pre 47.77 ± 8.34
 HSS-post 91.74 ± 4.77
  1. SD standard deviation, BMI body mass index, AMR adipose to muscle area ratio, KSS score the Knee Society Score, HSS score the Hospital for Special Surgery knee score