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Table 1 Characteristics of the study subjects

From: Meniscus body position and its change over four years in asymptomatic adults: a cohort study using data from the Osteoarthritis Initiative (OAI)

Characteristic

N = 118

Women, n (%)

72 (61)

Age, mean ± SD (range) years

55.0 ± 7.5 (45–78)

Body mass index, mean ± SD (range) kg/m 2

24.4 ± 3.2 (18–34)

Kellgren and Lawrence grade, n (%)*

 

  0

99 (85)

  1

17 (15)

Medial meniscal tear, n (%)

 

  Right knee

9 (7.6)

  Left knee

8 (6.8)

Lateral meniscal tear, n (%)

 

  Right knee

6 (5.1)

  Left knee

3 (2.5)

Anatomic axis alignment*†

 

  Right knee, mean ± SD degrees

−5.5 ± 1.6

  Varus, n (%)

41 (35)

  Neutral, n (%)

74 (64)

  Valgus, n (%)

1 (1)

  Left knee, mean ± SD degrees

−4.9 ± 1.6

  Varus, n (%)

28 (24)

  Neutral, n (%)

84 (72)

  Valgus, n (%)

4 (3)

  1. *Missing data for 2 subjects.
  2. †We considered the femorotibial (anatomic) axis alignment < = −6.0° as varus and > = −2.0° as valgus.