case_images: PMC5949174_01
case_images: Preoperative radiograph showing osteoarthritis secondary to developmental dysplasia of the hips.
case_images: CRIOR2018-6596135.001.jpg
case_images: PMC5949174_01_CRIOR2018-6596135.001.jpg
case_images: fig1
case_images: Plain radiography indicated osteoarthritic changes, represented by hip joint narrowing, osteosclerotic changes in the subchondral bone, and osteophyte formation (Figure 1).
case_images: Preoperative magnetic resonance imaging. No abnormal findings are observed.
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case_images: PMC5949174_01_CRIOR2018-6596135.002.jpg
case_images: fig2
case_images: However, preoperative magnetic resonance imaging did not show any abnormal findings of the gluteus medius muscle (Figure 2).
case_images: The patient underwent BS-THA via a posterolateral approach, which was successful without intraoperative complications.
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case_images: PMC5949174_01_CRIOR2018-6596135.003.jpg
case_images: fig3
case_images: Postoperative radiographic evaluation demonstrated that the patient's right and left limbs were extended by 14 and 8 mm, respectively, when compared with the preoperative length (Figure 3).
case_images: Measurement of the preoperative and postoperative distance from the anterior superior iliac spine to the greater trochanter tip by using the ZedHip system. (a) Preoperative, right. (b) Postoperative, right. (c) Preoperative, left. (d) Postoperative, left.
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case_images: PMC5949174_01_CRIOR2018-6596135.004.jpg
case_images: fig4
case_images: Lexi Co. Ltd., Tokyo, Japan) (Figure 4).
case_images: On the 14th postoperative day, the patient complained of left coxalgia during a walking exercise without any falls. Plain radiographs revealed a left greater trochanteric avulsion fracture.
case_images: CRIOR2018-6596135.005.jpg
case_images: PMC5949174_01_CRIOR2018-6596135.005.jpg
case_images: fig5
case_images: Plain radiographs revealed a left greater trochanteric avulsion fracture (Figure 5).
case_images: The fracture was fixed using tension band wiring on the 18th postoperative day.
case_images: CRIOR2018-6596135.006.jpg
case_images: PMC5949174_01_CRIOR2018-6596135.006.jpg
case_images: fig6
case_images: This fracture was fixed using tension band wiring on the 18th postoperative day (Figure 6).
case_images: On the 20th postoperative day, right coxalgia emerged during a transfer exercise. The greater trochanteric avulsion fracture on the right side was detected on plain radiographs.
case_images: CRIOR2018-6596135.007.jpg
case_images: PMC5949174_01_CRIOR2018-6596135.007.jpg
case_images: fig7
case_images: On the 20th postoperative day, right coxalgia occurred during a transfer exercise, and a greater trochanteric avulsion fracture on the right side was detected on plain radiographs (Figure 7).
case_images: On the 27th postoperative day, the right fracture was treated with small plate and wiring.
case_images: CRIOR2018-6596135.008.jpg
case_images: PMC5949174_01_CRIOR2018-6596135.008.jpg
case_images: fig8
case_images: On the 27th postoperative day, her right fracture was treated with small plate and wiring (Figure 8).
case_images: At the 18th postoperative month, the right fragment showed slight upper migration.
case_images: CRIOR2018-6596135.009.jpg
case_images: PMC5949174_01_CRIOR2018-6596135.009.jpg
case_images: fig9
case_images: The Harris Hip Score was 89/89 (Rt/Lt) points with range of motion of 10  bilateral adduction (Figure 9).