1. Evaluation of Morton's Theory of Second Metatarsal Hypertrophy by Brett R. Grebing, and Michael J. Coughlin J Bone Joint Surg Am Volume 86(7):1375-1386 July 1, 2004 ©2004 by The Journal of Bone and Joint Surgery, Inc.

2. Brett R. Grebing, and Michael J. Coughlin J Bone Joint Surg Am 2004;86:1375-1386 ©2004 by The Journal of Bone and Joint Surgery, Inc.

3. Brett R. Grebing, and Michael J. Coughlin J Bone Joint Surg Am 2004;86:1375-1386 ©2004 by The Journal of Bone and Joint Surgery, Inc.

4. Klaue's device27 used to measure mobility of the first ray. Brett R. Grebing, and Michael J. Coughlin J Bone Joint Surg Am 2004;86:1375-1386 ©2004 by The Journal of Bone and Joint Surgery, Inc.

5. Technique for measurement of the hallux valgus angle (A) and the first-second intermetatarsal angle (B). Brett R. Grebing, and Michael J. Coughlin J Bone Joint Surg Am 2004;86:1375-1386 ©2004 by The Journal of Bone and Joint Surgery, Inc.

6. Brett R. Grebing, and Michael J. Coughlin J Bone Joint Surg Am 2004;86:1375-1386 ©2004 by The Journal of Bone and Joint Surgery, Inc.

7. Brett R. Grebing, and Michael J. Coughlin J Bone Joint Surg Am 2004;86:1375-1386 ©2004 by The Journal of Bone and Joint Surgery, Inc.

8. With Morton's technique2, the width of the second metatarsal is quantified in comparison with that of the three other lesser metatarsals. Brett R. Grebing, and Michael J. Coughlin J Bone Joint Surg Am 2004;86:1375-1386 ©2004 by The Journal of Bone and Joint Surgery, Inc.

9. With the technique of Prieskorn et al.13, the medial cortical thickness of the second metatarsal (MCT), the intramedullary thickness of the second metatarsal (IMT), and the thickness of the entire shaft (ST) are all measured at the midpart of the shaft. Brett R. Grebing, and Michael J. Coughlin J Bone Joint Surg Am 2004;86:1375-1386 ©2004 by The Journal of Bone and Joint Surgery, Inc.