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Table 4 Comparison of clinical outcomes during the follow-up period

From: Preliminary outcomes following revision total knee arthroplasty using a new fixed-bearing revision knee system in Asians: a mean of 3-year follow-up

 

Total

Group A (septic)

Group B (Aseptic)

p value

(A) KOOS-JR scores

Pre-op

38.8 ± 12.5

38.3 ± 12.2

39.1 ± 12.7

0.738

PO at 3 months

42.1 ± 6.5

41.9 ± 6.0

44.3 ± 6.7

0.021

PO at 6 months

42.1 ± 6.5

41.9 ± 6.0

44.3 ± 6.7

0.021

PO at 12 months

50.2 ± 4.3

48.3 ± 3.2

55.2 ± 5.5

< 0.001

PO at 24 months

53.3 ± 3.3

48.7 ± 3.5

55.8 ± 3.1

< 0.001

p value

< 0.001

< 0.001

< 0.001

 

(B) WOMAC (pain and function)

Pre-op

60.8 ± 7.6

60.2 ± 8.1

61.8 ± 7.2

0.461

PO at 3 months

42.9 ± 4.6

47.2 ± 4.1

39.8 ± 5.2

< 0.001

PO at 6 months

42.9 ± 4.6

47.2 ± 4.1

39.8 ± 5.2

< 0.001

PO at 12 months

40.5 ± 4.3

45.6 ± 4.1

34.1 ± 4.4

< 0.001

PO at 24 months

39.8 ± 4.1

44.6 ± 4.0

33.1 ± 4.1

< 0.001

p value

< 0.001

< 0.001

< 0.001

 

(C) ROM of the knee joint

FC (°)

Pre-op

9.4 ± 6.8

10.3 ± 9.3

8.5 ± 5.8

0.039

PO at 3 months

4.5 ± 7.8

6.0 ± 7.3

3.5 ± 8.8

0.015

PO at 6 months

4.5 ± 7.8

6.0 ± 7.3

3.5 ± 8.8

0.015

PO at 12 months

4.3 ± 6.8

5.7 ± 6.5

2.1 ± 7.0

 < 0.001

PO at 24 months

4.3 ± 6.2

5.6 ± 6.4

2.2 ± 6.1

 < 0.001

p value

 < 0.001

 < 0.001

 < 0.001

 

FF (°)

Pre-op

92.3 ± 7.9

78.4 ± 8.1

105.3 ± 7.4

0.027

PO at 3 months

110.3 ± 8.9

108.6 ± 8.8

115.4 ± 9.2

0.01

PO at 6 months

110.3 ± 8.9

108.6 ± 8.8

115.4 ± 9.2

0.01

PO at 12 months

116.1 ± 7.3

110.4 ± 7.1

123.0 ± 7.4

 < 0.001

PO at 24 months

117.4 ± 9.3

111.7 ± 9.1

122.8 ± 9.8

 < 0.001

p value

 < 0.001

 < 0.001

 < 0.001

 
  1. (A) KOOS-JR, Knee Injury and Osteoarthritis Outcome Score for Joint Replacement; Pre-op, preoperative; and PO, postoperative
  2. (B) WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index; Pre-op, preoperative; and PO, postoperative
  3. (C) ROM, range of motion; FC, flexion contracture; F/U, follow-up; FF, further flexion; Pre-op, preoperative; and PO, postoperative
  4. Data are presented as mean ± standard deviation
  5. Group B by aseptic mode showed superior outcomes (independent sample t test, p < 0.05)
  6. Clinical outcomes were improved after the index operation (paired t test, p < 0.05)