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MRI Appearance of Chondral Delamination Injuries of the Knee

¹ All authors: Department of Radiology, Duke University, Box 3808, Durham, NC 27710.

View larger version (95K): [in a new window]   Fig. 1. —Artistic depiction of delamination injury of femoral condyle shows separation of articular cartilage from subchondral bone.

View larger version (126K): [in a new window]   Fig. 2. —Sagittal T2-weighted (fast spin-echo) image of knee in 23-year-old man with acute onset of medial knee pain after running injury shows delamination of posterior aspect of medial femoral condyle measuring 2.5 cm with increased signal in subchondral bone and in articular cartilage overlying injury.

View larger version (157K): [in a new window]   Fig. 3A. —16-year-old boy with patellar pain after twisting injury. Axial T2-weighted (fast spin-echo) image of knee shows delamination of central patella measuring 2 cm, with increased signal in subchondral bone and in articular cartilage overlying lesion.

View larger version (164K): [in a new window]   Fig. 3B. —16-year-old boy with patellar pain after twisting injury. Sagittal T2-weighted (fast spin-echo) image of knee shows delamination of central patella with increased signal in subchondral bone and in articular cartilage overlying lesion.

View larger version (144K): [in a new window]   Fig. 4A. —37-year-old woman with patellofemoral pain after twisting injury. Axial T2-weighted (fast spin-echo) image of knee shows delamination of medial femoral trochlea (arrow) measuring 1 cm. Note prominent medial patellar plica.

View larger version (157K): [in a new window]   Fig. 4B. —37-year-old woman with patellofemoral pain after twisting injury. Sagittal T2-weighted (fast spin-echo) image of knee shows delamination of medial femoral trochlea (arrow) with increased signal in overlying articular cartilage. Note prominent medial patellar plica.

View larger version (149K): [in a new window]   Fig. 4C. —37-year-old woman with patellofemoral pain after twisting injury. Axial T2-weighted (fast spin-echo) image of knee shows grade 3 cartilage injury of patellar apex (arrow) across patellofemoral joint from delamination injury. Note prominent medial patellar plica.

View larger version (135K): [in a new window]   Fig. 5. —25-year-old man with acute onset of medial knee pain after a running injury. Sagittal T2-weighted (fast spin-echo) image of knee shows grade 4 defect of medial femoral condyle (between small arrows). Just posterior to full-thickness defect is short delamination injury (large arrow) measuring 0.5 cm with increased signal in overlying articular cartilage.

View larger version (170K): [in a new window]   Fig. 6. —31-year-old man with patellofemoral pain after a running injury. Axial T2-weighted (fast spin-echo) image of knee shows grade 2–3 cartilage injury of medial femoral trochlea (small arrow), which terminates in short delamination (large arrow) measuring 0.5 cm.

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