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Table 1 Participant characteristics

From: Structural changes of hip osteoarthritis using magnetic resonance imaging

  Diagnosis of osteoarthritis No diagnosis of osteoarthritis P-value1
(n = 19) (n = 141)
Age, years 59.2 (7.6) 66.8 (7.3) <0.0012
Gender, % female 57.9 55.6 0.85
Body mass index, kg/m-2 27.2 (4.8) 27.6 (4.8) 0.742
Kellgren-Lawrence grade    
2 12 (63)   
3 6 (32)   
4 1 (5)   
Hip structures on magnetic resonance imaging   
Femoral head cartilage volume, mm3 1763 (321) 3343 (808) <0.0012
Femoral head bone area, mm2 1651 (305) 1610 (255) 0.582
Cartilage defects, number (%)    
Femoral head    
Central superolateral 17 (89.5) 45 (31.9) <0.001
Central inferomedial 10 (52.6) 67 (47.5) 0.68
Anterior 12 (63.2) 5 (3.5) <0.001
Posterior 14 (73.7) 25 (17.6) <0.001
Acetabular    
Central superolateral 17 (89.5) 37 (26.2) <0.001
Anterior 18 (94.7) 26 (18.3) <0.001
Posterior 15 (78.9) 50 (35.2) <0.001
Femoroacetabular    
Central superolateral 18 (94.7) 64 (45.1) <0.001
Anterior 18 (94.7) 27 (19) <0.001
Posterior 16 (84.2) 57 (40.1) <0.001
Bone marrow lesions, number (%)    
Femoral head    
Central superolateral 10 (52.6) 7 (5.0) <0.001
Central inferomedial 6 (31.6) 6 (4.3) <0.01
Anterior 7 (36.8) 2 (2.1) <0.001
Posterior 5 (26.3) 4 (2.8) <0.001
Acetabular    
Central superolateral 13 (68.4) 22 (15.6) <0.001
Central inferomedial 2 (10.5) 3 (2.1) 0.05
Anterior 13 (68.4) 28 (19.7) <0.001
Posterior 11 (57.9) 18 (12.7) <0.001
Femoroacetabular    
Central superolateral 14 (73.7) 27 (19.0) <0.001
Central inferomedial 6 (31.6) 8 (5.6) <0.001
Anterior 14 (73.7) 29 (20.4) <0.001
Posterior 13 (68.4) 20 (14.1) <0.001
  1. Results displayed as mean (±SD) unless otherwise stated. All central regions results are the combined prevalence of regions 1 and 2. 1P-value for differences between groups (chi-square test unless otherwise stated). 2Independent samples t-test.