1. Calcaneal Stress Fracture: An Adverse Event Following Total Hip and Total Knee Arthroplasty by Takaaki Miki, Takahito Miki, and Akihiro Nishiyama J Bone Joint Surg Am Volume 96(2):e9 January 15, 2014 ©2014 by The Journal of Bone and Joint Surgery, Inc.

2. A sclerotic line (arrows) traverses the long axis of the calcaneus on this radiograph made eight weeks after ipsilateral total knee arthroplasty and two weeks after the onset of symptoms. Takaaki Miki et al. J Bone Joint Surg Am 2014;96:e9 ©2014 by The Journal of Bone and Joint Surgery, Inc.

3. The posterior part of the calcaneal tuberosity had displaced moderately, but healing of the fracture (arrows) was evident twelve weeks later. Takaaki Miki et al. J Bone Joint Surg Am 2014;96:e9 ©2014 by The Journal of Bone and Joint Surgery, Inc.

4. There is no abnormal finding on this radiograph of the calcaneus made twenty-four weeks after total knee arthroplasty and five days after the onset of symptoms. Takaaki Miki et al. J Bone Joint Surg Am 2014;96:e9 ©2014 by The Journal of Bone and Joint Surgery, Inc.

5. The sclerotic line (arrows) had become apparent two weeks later. Takaaki Miki et al. J Bone Joint Surg Am 2014;96:e9 ©2014 by The Journal of Bone and Joint Surgery, Inc.

6. There is only a slight sclerotic line (arrows) in the calcaneus on this radiograph made seven weeks after total knee arthroplasty and one week after the onset of symptoms. Takaaki Miki et al. J Bone Joint Surg Am 2014;96:e9 ©2014 by The Journal of Bone and Joint Surgery, Inc.

7. The sclerotic line (arrows) had become more apparent three weeks later. Takaaki Miki et al. J Bone Joint Surg Am 2014;96:e9 ©2014 by The Journal of Bone and Joint Surgery, Inc.

8. There are no abnormal findings of the calcaneus on the radiograph made eleven weeks after total knee arthroplasty and five days after the onset of symptom. Takaaki Miki et al. J Bone Joint Surg Am 2014;96:e9 ©2014 by The Journal of Bone and Joint Surgery, Inc.

9. A sclerotic line (arrows) had become apparent in the calcaneal tuberosity two weeks later. Takaaki Miki et al. J Bone Joint Surg Am 2014;96:e9 ©2014 by The Journal of Bone and Joint Surgery, Inc.

10. A sclerotic line (arrows) traverses the long axis of the calcaneal tuberosity at seventeen weeks after total hip arthroplasty and five weeks after the onset of symptoms. Takaaki Miki et al. J Bone Joint Surg Am 2014;96:e9 ©2014 by The Journal of Bone and Joint Surgery, Inc.

11. T1-weighted magnetic resonance imaging clearly demonstrates a linear zone of low signal intensity (arrows), which indicated a fracture line, and a broader, poorly defined area of signal intensity alteration in the bone marrow. Takaaki Miki et al. J Bone Joint Surg Am 2014;96:e9 ©2014 by The Journal of Bone and Joint Surgery, Inc.