Table 2

Number of postmarathon lesions in different structures before and after the marathon/training, in 142 knees of 71 marathon runners and 22 knees of 11 non-marathon runners

Knee abnormalities per structureMarathon runners
(n=142 knees)
Non-marathon runners
(n=22 knees)
Number of Post-M lesionsSignificant change from Pre-MNumber of Post-M lesionsSignificant change from Pre-M
New/
Worsened*
Improved†New/
Worsened
Improved
Meniscal tears10n.s.00n.s.
Cartilage lesions252Lateral patella
p=0.0005*
40n.s.
Patello-femoral21130
Tibio-femoral4110
BME lesions2623Medial tibia
p=0.011†
33n.s.
Patello-femoral19231
Tibio-femoral72102
Tendon lesions132Semimembranosus
p=0.016*
20n.s.
Ligament lesions22n.s.00n.s.
ITBFS150ITB
p<0.0001*
11n.s.
Prepatellar bursitis70Prepatellar bursitis
p=0.016
10n.s.
  • All abnormalities were recorded including Grade 1 abnormalities (all grades different from 0 were defined as ‘lesions’). P values<0.05 indicate significant changes in the knees between the premarathon and postmarathon time points.See online supplementary appendices 2 and 4 for further details.

  • *Indicate significant worsening.

  • †Indicate significant improvement in the extent of lesion.

  • BME, bone marrow oedema; ITBFS, iliotibial band friction syndrome; n.s., not significant; Post-M, post-marathon; Pre-M, pre-marathon.