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Table 1 Characteristics of participants at baseline

From: MRI-detected osteophytes of the knee: natural history and structural correlates of change

 

Stable or decreased OPs

Increased OPs

p

N = 222

N = 191

Age (years)

62.2 ± 7.3

62.9 ± 7.0

0.30

Female (%)

53

47

0.22

BMI (kg/m2)

26.9 ± 3.9

28.5 ± 4.9

< 0.01

Baseline total cartilage defect score (0–4)

1.48 ± 0.73

2.13 ± 1.03

< 0.01

Baseline total BML score (0–3)

0.33 ± 0.56

0.59 ± 0.78

< 0.01

Baseline total tibial CV (ml)

5.11 ± 1.22

5.08 ± 1.13

0.80

Baseline meniscal extrusion score (0–2)

0.13 ± 0.36

0.27 ± 0.51

< 0.01

Total effusion-synovitis score (0–3)

1.90 ± 0.67

2.08 ± 0.81

0.01

Suprapatellar effusion-synovitis score (0–3)

1.53 ± 0.64

1.76 ± 0.84

0.01

Central portion effusion-synovitis score (0–3)

1.56 ± 0.71

1.65 ± 0.77

0.19

Posterior femoral recess effusion-synovitis score (0–3)

0.66 ± 0.79

0.76 ± 0.78

0.14

Subpopliteal recess effusion-synovitis score (0–3)

0.60 ± 0.79

0.78 ± 0.94

0.04

IPFP area (cm2)

7.6 ± 1.2

7.7 ± 1.3

0.18

Presence of IPFP abnormality (%)

75%

82%

0.10

IPFP quality score (0–6)

1.45 ± 1.21

2.12 ± 1.64

< 0.01

Baseline total OP score (0–36)

2.80 ± 3.45

7.62 ± 7.70

< 0.01

  1. The two-tailed t test was used to examine differences between means, and the χ2 test was used for proportions (percentages). Significant differences are shown in bold. Mean ± SD except for percentages
  2. BMI body mass index, BM: bone marrow lesion, OP osteophyte, CV cartilage volume, IPFP infrapatellar fat pad