1. Subchondral Fatigue Fracture of the Femoral Head in Military Recruits by Won Seok Song, Jeong Joon Yoo, Kyung-Hoi Koo, Kang Sup Yoon, Young-Min Kim, and Hee Joong Kim J Bone Joint Surg Am Volume 86(9):1917-1924 September 1, 2004 ©2004 by The Journal of Bone and Joint Surgery, Inc.

2. Case 1, a twenty-two-year-old man with bilateral hip pain one month after recruitment into military service. Won Seok Song et al. J Bone Joint Surg Am 2004;86:1917- 1924 ©2004 by The Journal of Bone and Joint Surgery, Inc.

3. Left: Coronal T1-weighted (repetition time, 700 msec; echo time, 20 msec) and T2-weighted (repetition time, 4000 msec; echo time, 132 msec) magnetic resonance images acquired at about the same time as the radiographs shown in Fig. 1-A demonstrate a diffuse... Won Seok Song et al. J Bone Joint Surg Am 2004;86:1917- 1924 ©2004 by The Journal of Bone and Joint Surgery, Inc.

4. Coronal T1-weighted (repetition time, 500 msec; echo time, 11 msec) and proton-density (repetition time, 1100 msec; echo time, 40 msec) magnetic resonance images show a diffuse area of signal intensity changes (asterisks) in the right femoral head and neck... Won Seok Song et al. J Bone Joint Surg Am 2004;86:1917- 1924 ©2004 by The Journal of Bone and Joint Surgery, Inc.

5. Figs. 2-A through 2-D Case 5, a twenty-one-year-old man with pain in the right hip one month after the start of basic training. Won Seok Song et al. J Bone Joint Surg Am 2004;86:1917- 1924 ©2004 by The Journal of Bone and Joint Surgery, Inc.

6. Photographs made during the operation show flattening of the femoral head and restoration of the contour with strut-bone-graft impaction (arrowhead) through a cortical window in the femoral neck (right). Won Seok Song et al. J Bone Joint Surg Am 2004;86:1917- 1924 ©2004 by The Journal of Bone and Joint Surgery, Inc.

7. Eighteen-month anteroposterior (top) and frog-leg (bottom) radiographs show no progression of collapse. Won Seok Song et al. J Bone Joint Surg Am 2004;86:1917- 1924 ©2004 by The Journal of Bone and Joint Surgery, Inc.

8. A typical case of osteonecrosis of the femoral head. Won Seok Song et al. J Bone Joint Surg Am 2004;86:1917- 1924 ©2004 by The Journal of Bone and Joint Surgery, Inc.