1. Avulsion of the Proximal Hamstring Origin by David G. Wood, Iain Packham, S. Paul Trikha, and James Linklater J Bone Joint Surg Am Volume 90(11):2365-2374 November 1, 2008 ©2008 by The Journal of Bone and Joint Surgery, Inc.

2. Coronal proton-density magnetic resonance image showing a Type-1 injury (osseous avulsion of the ischial tuberosity) in a fifteen-year-old boy who had recently sustained a mildly displaced avulsion fracture of the right ischial tuberosity. David G. Wood et al. J Bone Joint Surg Am 2008;90:2365- 2374 ©2008 by The Journal of Bone and Joint Surgery, Inc.

3. David G. Wood et al. J Bone Joint Surg Am 2008;90:2365- 2374 ©2008 by The Journal of Bone and Joint Surgery, Inc.

4. David G. Wood et al. J Bone Joint Surg Am 2008;90:2365- 2374 ©2008 by The Journal of Bone and Joint Surgery, Inc.

5. Sagittal proton-density magnetic resonance image demonstrating the retracted distal tendon edge (arrow). David G. Wood et al. J Bone Joint Surg Am 2008;90:2365- 2374 ©2008 by The Journal of Bone and Joint Surgery, Inc.

6. David G. Wood et al. J Bone Joint Surg Am 2008;90:2365- 2374 ©2008 by The Journal of Bone and Joint Surgery, Inc.

7. David G. Wood et al. J Bone Joint Surg Am 2008;90:2365- 2374 ©2008 by The Journal of Bone and Joint Surgery, Inc.

8. Coronal fat-suppressed proton-density magnetic resonance image demonstrating a chronic Type-3 injury, with myxoid degeneration and incomplete avulsion at the deep margin of the right hamstring origin (arrow). David G. Wood et al. J Bone Joint Surg Am 2008;90:2365- 2374 ©2008 by The Journal of Bone and Joint Surgery, Inc.

9. Coronal fat-suppressed proton-density magnetic resonance image demonstrating a Type-4 injury (a nonretracted complete tear of the hamstring origin). David G. Wood et al. J Bone Joint Surg Am 2008;90:2365- 2374 ©2008 by The Journal of Bone and Joint Surgery, Inc.

10. Coronal fat-suppressed proton-density magnetic resonance image demonstrating an acute Type- 5a injury (a retracted complete avulsion of the hamstring origin). David G. Wood et al. J Bone Joint Surg Am 2008;90:2365- 2374 ©2008 by The Journal of Bone and Joint Surgery, Inc.

11. Coronal fat-suppressed proton density magnetic resonance image demonstrating a chronic Type-5b injury (a retracted complete tear of the hamstring origin with sciatic nerve involvement). David G. Wood et al. J Bone Joint Surg Am 2008;90:2365- 2374 ©2008 by The Journal of Bone and Joint Surgery, Inc.

12. Clinical photograph of the clinical deformity, made after a complete hamstring avulsion (a Type-5 injury) with retraction of the tendon ends and prominence of the muscle belly. David G. Wood et al. J Bone Joint Surg Am 2008;90:2365- 2374 ©2008 by The Journal of Bone and Joint Surgery, Inc.