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Table 1 Participant characteristics [median (interquartile range)]

From: Pain, balance, and mobility in people 1 year after total knee arthroplasty: a non-randomized cross-sectional pilot study contrasting posterior-stabilized and medial-pivot designs

 

PS-TKA

(n = 20)

MP-TKA

(n = 18)

Controls

(n = 19)

P value

Age (years)

71.00 (65.50 to 74.50)

75.00 (60.75 to 81.00)

68.00 (61.05 to 71.00)

0.191

Weight (kg)

68.25 (63.75 to 73.05)

67.50 (64.10 to 75.28)

57.00 (50.15 to 63.15)

0.010*

Height (m)

1.54 (1.49 to 1.58)

1.53 (1.48 to 1.61)

1.55 (1.49 to 1.60)

0.033*

BMI (kg/m2)

27.93 (26.94 to 30.35)

28.42 (26.68 to 29.75)

22.83 (21.36 to 24.93)

 < 0.001*

Female:male

19:1

13:5

16:3

0.173

Months after operation (months)

13.00 (10.00 to 14.00)

12.00 (10.00 to 14.00)

NA

0.511

At least one medication (% yes)

70.00%

72.00%

16.00%

0.007*

Falls 1 year before operation (% yes)

30.00%

11.00%

NA

0.154

Trips 1 year before operation (% yes)

35.00%

28.00%

NA

0.632

Falls after operation/in the last 12 months (% yes)

10.00%

6.00%

10.00%

0.825

Trips after operation/ in the last 12 months (% yes)

40.00%

28.00%

37.00%

0.443

Pre- vs post-operation falls

6 vs 2

2 vs 1

NA

NS

Pre- vs post-operation trips

7 vs 8

5 vs 5

NA

NS

Use of walking aids outdoor (% yes)

55.00%

62.00%

0.00%

0.343

  1. BMI body mass index, NS not significant, NA not applicable
  2. *Denotes significant difference at p < 0.05 using Kruskal–Wallis test
  3. Denotes significant difference from control at p < 0.05/3 using Mann–Whitney U test with Bonferroni adjustment