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. 2018 Sep 1;30(3):227–233. doi: 10.5792/ksrr.18.022

Table 1.

Demographics

Characteristic Stemmed Standard p-value
Total knee arthroplasty 50 128
Age (yr) 61±8.8 62±8.7 0.49
Female 43 (86) 102 (79) 0.33
Right side 24 (48) 67 (52) 0.60
Smaller size tibial componenta) 38 (76) 77 (60) 0.047
Time to follow-up (mo) 30±3.8 34±5.2 <0.001
Body mass index (kg/m2) 44.4±6.1 39.8±4.1 <0.001
 35–39 (WHO class II) 9 (18) 70 (55)
 ≥40 (WHO class III) 41 (82) 58 (45)
  40–44 22 31
  45–49 12 15
  50–54 3 2
  55–60 4 0
Rheumatoid arthritis 0 4 (3) 0.26
Tobacco use
 Active 4 (8) 15 (12) 0.59
 Former 13 (26) 43 (34) 0.37
Osteopenia or osteoporosis 2 (4) 10 (8) 0.29
Diabetes mellitus 16 (32) 34 (27) 0.47

Values are presented as mean±standard deviation or number (%).

WHO: World Health Organization.

a)

Defined as lower half of offered manufactured sizes (NexGen size, 1–4; Persona size, A–D).