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Table 4 Pre-Radiographic Structural Features at 1 Years Prior to Disease Onset Associated with Accelerated Knee Osteoarthritis

From: Early pre-radiographic structural pathology precedes the onset of accelerated knee osteoarthritis

Structural Feature

Group

AKOA (n = 112)

No AKOA (Reference, n = 242)

Univariate Odds Ratio

n (%)

n (%)

OR (95% CI)

Semi-Quantitative

Degenerative Cruciate Ligaments

Absence

64 (57%)

180 (74%)

Reference

Presence

48 (43%)

62 (26%)

2.18 (1.36, 3.49)*

Degenerative Collateral Ligaments

Absence

86 (77%)

206 (85%)

Reference

Presence

26 (23%)

36 (15%)

1.73 (0.99, 3.04)

Degenerative Extensor Mechanism

Absence

62 (55%)

165 (68%)

Reference

Presence

50 (45%)

77 (32%)

1.73 (1.09, 2.74)*

Degenerative Gastrocnemius Tendon

Absence

63 (56%)

140 (58%)

Reference

Presence

49 (44%)

102 (42%)

1.07 (0.68, 1.68)

Infrapatellar Fat Pad Signal Intensity Alteration

Absence

53 (47%)

169 (70%)

Reference

Presence

59 (53%)

73 (30%)

2.58 (1.63, 4.09)*

Medial Meniscal Pathology

Absence

23 (21%)

115 (48%)

Reference

Presence

89 (79%)

127 (52%)

3.50 (2.08, 5.91)*

Lateral Meniscal Pathology

Absence

63 (56%)

180 (74%)

Reference

Presence

49 (44%)

62 (26%)

2.26 (1.41, 3.62)*

Medial Meniscal Extrusion

Absence

72 (64%)

209 (86%)

Reference

Presence

40 (36%)

33 (14%)

3.52 (2.07, 6.00)*

Lateral Meniscal Extrusion

Absence

103 (92%)

237 (98%)

Reference

Presence

9 (8%)

5 (2%)

4.14 (1.36, 12.66)

Quantitative

Effusion-Synovitis Volume^

Smallest

46 (41%)

190 (79%)

Reference

Largest

66 (59%)

52 (21%)

5.24 (3.23, 8.52)*

Bone Marrow Lesion Volume^

Smallest

69 (62%)

169 (70%)

Reference

Largest

43 (38%)

73 (30%)

1.44 (0.90, 2.31)

Cartilage Damage Index^

Largest

73 (65%)

164 (68%)

Reference

Smallest

39 (35%)

78 (32%)

1.12 (0.70, 1.80)

  1. *Statistically significant: p < 0.004. ^Comparing the worst tertile (i.e. largest effusion-synovitis/bone marrow lesion, smallest CDI) to the other 2 tertiles