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Table 2 Demographic characteristics according to MME

From: Influence of preoperative medial meniscus extrusion and subchondral bone marrow edema on outcomes after medial opening wedge high tibial osteotomy

Characteristics

MME < 3 mm

(n = 48)

MME ≥ 3 mm

(n = 103)

P value

Age* (years)

54.6 ± 8.1

56.4 ± 7.9

0.822

Female, n (%)

19 (39.6)

62 (60.2)

0.28

Body mass index* (kg/m2)

24.9 ± 3.0

26.2 ± 3.1

0.457

Operative side: left, n (%)

25 (52.0)

52 (50.5)

0.855

BME*

30(62.5)

92(89.3)

0.032

Preoperative HKA angle*†

6.7 ± 2.6

8.9 ± 1.9

0.003

Preoperative MPTA*

82.9 ± 2.0

81.7 ± 1.5

0.006

Preoperative weight-loading line (%)*

17.9 ± 11.1

17.4 ± 9.3

0.134

Postoperative HKA angle*†

−2.8 ± 2.5

−2.3 ± 3.1

0.471

Postoperative MPTA*

91.3 ± 1.9

91.7 ± 2.2

0.124

Postoperative weight-bearing line (%)*

55.5 ± 9.8

57.8 ± 11.0

0.506

Meniscal tear pattern

  

< 0.001

   Horizontal

12

15

 

   Complex

10

33

 

   Root

6

39

 

   Other

20

16

 
  1. Abbreviations: BME: bone marrow edema; MME: medial meniscal extrusion
  2. Notes:
  3. * Values are given as the mean and standard deviation
  4. † A positive angle represents varus alignment, and a negative angle represents valgus alignment