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Table 5 Regression analysesa of association between tissue abnormalities from CR and/or MRI and physical examination findings

From: Biomechanical factors and physical examination findings in osteoarthritis of the knee: associations with tissue abnormalities assessed by conventional radiography and high-resolution 3.0 Tesla magnetic resonance imaging

   Bony tenderness (presence) Crepitus (presence) Bony enlargement (presence) Palpable warmth (presence)
Conventional radiography    
JSWb MTF 0.90 (0.82) 2.13 (0.15) 2.22 (0.34) 0.44 (0.43)
  LTF 0.96 (0.95) 4.24 (0.18) 1.70 (0.50) n/a
  PF 1.80 (00.27) 1.15 (0.82) 3.09 (0.09) 2.72 (0.35)
Osteophytesb MTF 0.77 (0.59) 1.40 (0.58) 0.78 (0.74) 0.90 (0.93)
  LTF 0.85 (0.81) n/a 1.29 (0.80) 2.33 (0.53)
  PF 1.34 (0.58) 1.45 (0.56) 1.89 (0.34) 3.52 (0.23)
Magnetic resonance imaging    
Cartilage integrity MTF 0.89 (0.25) 1.25 (0.05) 1.18 (0.26) 0.92 (0.72)
  LTF 0.88 (0.27) 1.61 (0.02) 1.26 (0.15) 0.75 (0.38)
  PF 1.03 (0.74) 1.07 (0.49) 0.94 (0.60) 1.30 (0.11)
Osteophytes MTF 0.92 (0.32) 1.34 (0.02) 1.05 (0.69) 1.24 (0.31)
  LTF 1.06 (0.60) 1.57 (0.01) 1.29 (0.08) 1.19 (0.48)
  PF 1.09 (0.20) 1.20 (0.04) 0.99 (0.90) 1.30 (0.17)
BML MTF 0.97 (0.76) 1.16 (0.27) 1.01 (0.94) 1.04 (0.87)
  LTF 0.91 (0.53) 1.38 (0.26) 1.45 (0.05) 1.03 (0.95)
  PF 0.84 (0.21) 1.73 (0.12) 0.66 (0.28) 1.29 (0.28)
Effusionc   0.75 (0.52) 7.05 (0.01) 1.10 (0.89) 5.93 (0.14)
Synovitisd   0.84 (0.70) 2.14 (0.21) 1.30 (0.70) n/a
  1. Data presented as odds ratio (P value). Significant associations (P <0.05) in bold. BML, bone marrow lesion; CR, conventional radiography; JSW, joint space width; LTF, lateral tibiofemoral compartment; MRI, magnetic resonance imaging; MTF, medial tibiofemoral compartment; n/a, not applicable because of empty cells in analysis; PF: patellafemoral compartment. aAdjusted for age, gender and duration of knee symptoms. bDefinite/severe abnormality compared with none/mild abnormality (reference group). cMedium/large effusion compared with no/small effusion (reference group). dPresence of synovitis in at least one region compared with absence of synovitis (reference group).