Table 6

MRI findings

(1) Symptomatic vs asymptomatic soccer players(2) Asymptomatic soccer players vs Asymptomatic non-soccer players
χ² statistic or *=Fisher's testORχ² statistic or *=Fisher's testOR
MRI findingsp ValueOR (95% CI)p Valuep ValueOR (95% CI)p Value
BMO†0.12.20 (0.85 to 5.71)0.110.029.09 (1.85 to 44.70)0.007
BMO grade 0–3‡0.027 0.045 
Fatty infiltration in bone marrow0.521.36 (0.54 to 3.43)0.52p<0.00113.3 (2.75 to 64.40)0.001
Symphyseal sclerosis0.990.99 (0.39 to 2.53)0.99p<0.00113.3 (2.75 to 64.40)0.001
Parasymphyseal high-intensity line0.760.84 (0.28 to 2.54)0.760.001*NANA
Secondary cleft sign0 36*3.78 (0.40 to 35.51)0.251.0*1.18 (0.07 to 19.64)0.91
Subchondral cysts/joint surface irregularities0.961.02 (0.40 to 2.58)0.96p<0.0017.18 (2.39 to 21.58)p<0.001
Central disc protrusion§0.0234.29 (1.18 to 15.57)0.0270.00813.3 (1.43 to 123.8)0.023
Adductor tendinopathy0.911.06 (0.38 to 2.93)0.91p<0.0016.33 (2.30 to 17.42)p<0.001
Musculotendinous lesion0.68*1.83 (0.31 to 10.67)0.501.0*1.19 (0.16 to 8.91)0.87
Superior cleft sign0.50*0.53 (0.14 to 2.08)0.360.04*8.36 (0.95 to 73.34)0.055
Rectus abdominis tendinopathy0.33*0.27 (0.03 to 2.75)0.270.09*NANA
  • (1) Soccer players: symptomatic (N=39) versus asymptomatic adductor tendons (N=34).

  • (2) Asymptomatic sides in Soccer players (N=34) versus Asymptomatic sides in non-soccer players (N=40).

  • *Fisher's test.

  • †BMO is evaluated as a binary variable: absent (grade 0)/present (grade 1–3).

  • ‡BMO (grade 0–3) χ² test for trend.

  • §Central disc protrusion analysed on an individual participant level.

  • BMO, bone marrow oedema; NA, not assessed.