Irregular Findings Common in Knees of Young Competitive Alpine Skiers (IMAGE)

Radiological Society of North America

Irregular Findings Common in Knees of Young Competitive Alpine Skiers

Caption

Images show examples of (a-d) distal femoral cortical irregularity (DFCI) at the tendon attachment of the medial head of the gastrocnemius muscle (MHG) and (e, f) knees without DFCI. (a, b) Sagittal (a) and axial (b) fat-suppressed T2-weighted MRI scans in 14-year-old female competitive skier show a 5-mm DFCI (arrow) at the distal MHG attachment (*). (c) Sagittal fat-suppressed T2-weighted MRI scan in another 14-year-old female competitive skier shows simultaneous DFCIs at the proximal (8 mm; white arrow) and distal (4 mm; black arrow) part of the MHG tendon attachment (*). (d) Sagittal fat-suppressed proton density-weighted MRI scan in 14-year-old female control participant shows a 4-mm DFCI (arrow) at the distal MHG attachment (*). (e, f) Sagittal fat-suppressed proton density-weighted MRI scans in 15-year-old female control participant (e) and 15-year-old male control participant (f) without a DFCI for comparison. The broad and fan-shaped appearance of the proximal MHG tendon (*) is especially well visualized in f because of edematous demarcation after knee trauma.

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Radiological Society of North America

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