PMC5824459_01
This T1-weighted image shows a serpiginous band of hypodensity that represents the separation point between necrotic bone and bone that is undergoing repair. This is pathognomonic of AVN
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PMC5824459_01_12878_2018_98_Fig1_HTML.jpg
Fig1
This can be seen in Fig. 1.
This AP x-ray was done 2 weeks post decompression. The patient was asymptomatic at this point, and x-ray shows a normal femoral head
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Fig2
Figure 2 shows x- rays at two weeks post op.
This coronal T1-weighted image shows progression of AVN with necrosis, flattening of the right femoral head, and post decompression evidence in the femoral neck. There is also edema, which corresponds to the increasing pain the patient was experiencing at this time. There are obvious differences between the left and right femoral heads
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PMC5824459_01_12878_2018_98_Fig3_HTML.jpg
Fig3
Fig. 3. Further progression of her AVN can be seen with follow up x-rays at her later appointment 5 months post decompression in Fig. 4.
AP view of the right femoral head shows areas of hyperlucency and surrounding sclerosis, as well subtle changes in the shape of the articular surface. The necrosis also spreads into the acetabulum. This x-ray was done just before the patient was referred to a hip revision specialist
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PMC5824459_01_12878_2018_98_Fig4_HTML.jpg
Fig4
Fig. 3. Further progression of her AVN can be seen with follow up x-rays at her later appointment 5 months post decompression in Fig. 4.