1. 1 Chapter 39 Transient Migratory Osteoporosis in Osteogenesis Imperfecta Copyright © 2014 Elsevier Inc. All rights reserved.

2. 2 FIGURE 39.1 MRI bone edema in transient osteoporosis: this 60-year-old woman with type I OI complained of knee pain for 1 month. There was no history of trauma.

3. 3 Copyright © 2014 Elsevier Inc. All rights reserved. FIGURE 39.2 Bone histology in transient edema: trabecular bone is diminished. One lamellar segment is illustrated. There is accumulation of foamy cells in the region of trabecular bone. This figure is reproduced in color in the color plate section.

4. 4 Copyright © 2014 Elsevier Inc. All rights reserved. FIGURE 39.3 X-ray of transient edema showing subchondral line of bone resorption (arrow).

5. 5 Copyright © 2014 Elsevier Inc. All rights reserved. FIGURE 39.4 MRI of hip bilateral hip involvement in transient osteoporosis following completion of pregnancy.

6. 6 Copyright © 2014 Elsevier Inc. All rights reserved. FIGURE 39.5 Transient osteoporosis of the knee with surrounding effusion in OI.