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Click 8 year old female with congenital indifference to pain.
MRI Fig 2a. Axial T1 non-contrast
Heterogeneous lesion measuring 3.5 x 2 x 3.5 cm in the posterior aspect of the lateral femoral condyle that is heterogeneously iso- and hypointense relative to skeletal muscle on T1

Click 8 year old female with congenital indifference to pain.
MRI Fig 2b. Axial T1 post contrast
Heterogeneous lesion measuring 3.5 x 2 x 3.5 cm in the posterior aspect of the lateral femoral condyle that is heterogeneously iso- and hypointense relative to skeletal muscle on T1 imaging with heterogeneous, septal enhancement

Click 8 year old female with congenital indifference to pain.
MRI Fig 2c. Coronal T1 pre contrast
Lesion spanning from the epiphysis through the physis into the metaphysis

Click 8 year old female with congenital indifference to pain.
MRI Fig 2d. Coronal T1 post contrast
T2 hyper-intense to muscle with a few small cystic areas.

Click 8 year old female with congenital indifference to pain.
MRI Fig 2e-f. Sagittal T2
Subperiosteal extension of soft tissue causes scalloping of the posterior aspect of the distal femur metaphysis

Click 8 year old female with congenital indifference to pain.
MRI Fig 4a. Axial T1 fat suppressed turbo spin echo post contrast
Progressive remodeling of the displaced fracture through the posterior aspect of the lateral femoral condyle

Click 8 year old female with congenital indifference to pain.
MRI Fig 4b. Axial PD fat suppressed
Progressive remodeling of the displaced fracture through the posterior aspect of the lateral femoral condyle

Click 8 year old female with congenital indifference to pain.
MRI Fig 4c. Coronal T1 non contrast
Demonstrates interval progression of ossification of the lateral femoral condyle with interval development of small areas of fat signal intensity and trabecular architecture in the region of the lateral femoral condyle lesion

Click 8 year old female with congenital indifference to pain.
MRI Fig 4d. Coronal PD fat suppressed non-contrast
Previously described areas of cystic change have resolved, with overall decrease of the T2 hyperintense signal indicating decreased edema.

Click 8 year old female with congenital indifference to pain.
MRI Fig a. Axial PD fat suppressed non-contrast
Extensive marrow edema of the talus and cystic change in the posterior facet of the talus

Click 8 year old female with congenital indifference to pain.
MRI Fig 6b. Coronal PD fat suppressed non-contrast
Exuberant bone marrow edema at the lateral malleolus, medial malleolus, talus

Click 8 year old female with congenital indifference to pain.
MRI Fig 6c. Sagittal T1 fat suppressed turbo spin echo post contrast
Exuberant synovitis of the tibiotalar and subtalar joints

Click 8 year old female with congenital indifference to pain.
MRI Fig 6d. Sagittal STIR
Large ankle effusion

Click 8 year old female with congenital indifference to pain.
MRI Fig 7a. Axial T1 TSE non-contrast
Progressive healing of the displaced fracture through the lateral femoral condyle as well as progressive ossification of the lateral femoral condyle epiphysis

Click 8 year old female with congenital indifference to pain.
MRI Fig 7b. Axial T1 TSE fat suppressed post contrast
Progressive healing of the displaced fracture through the lateral femoral condyle as well as progressive ossification of the lateral femoral condyle epiphysis

Click 8 year old female with congenital indifference to pain.
MRI Fig 7c. Sagittal T1 fat suppressed post contrast
Normal marrow signal and trabecular architecture through almost the entire lateral femoral condyle with a small amount of residual abnormal signal adjacent to the fracture site

Click 8 year old female with congenital indifference to pain.
MRI Fig 7d. Sagittal T2 TSE fat suppressed
Normal marrow signal and trabecular architecture through almost the entire lateral femoral condyle with a small amount of residual abnormal signal adjacent to the fracture site

Click 8 year old female with congenital indifference to pain.
MRI Fig 7e. Coronal T1 TSE fat suppressed post contrast
No fracture of pathologic enhancement is noted