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Table 2 Comparison of the effusion area identified by ultrasonography according to the severity of knee osteoarthritis identified by radiography

From: Evaluation of a quantitative measurement of suprapatellar effusion by ultrasonography and its association with symptoms of radiographic knee osteoarthritis: a cross-sectional observational study

Effusion area (mm2)

Total

N = 254

KLG 2

N = 180

KLG 3

N = 57

KLG 4

N = 17

Average value

49.6 ± 52.4

39.2 ± 40.2

69.5 ± 59.3*

93.0 ± 91.3*

95 % CI

43.1, 56.1

33.3, 45.1

53.8, 85.3

46.0, 140.0

  1. Statistical analysis was by analysis of variance (Tukey post-hoc test); * P ≤ 0.01 compared to Kellgren-Lawrence grade (KLG) 2. The effusion area of each knee joint was measured (n = 254 knees). CI confidence interval
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Arthritis Research & Therapy

ISSN: 1478-6362

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