Letter to the Editor

1. Cooper A Clifford P Parikh V Steinmetz N Mizel M : Instability of the First Metatarsal-Cuneiform Joint: Diagnosis and Discussion of an Independent Pain Generator in the Foot. Foot Ankle Int. 30 (10): 928–932, 2009

2. Coughlin M Jones C : Hallux valgus and first ray mobility: a prospective study. J Bone Joint Surg. 89A: 1887–1898, 2007

3. Glasoe W Allen M Saltzman C Ludewig P Sublett S : Comparison of two methods used to Asses first ray mobility. Foot Ankle Int 23(3): 248–252, 2002

4. Glasoe W Coughlin M : A Critical Analysis of Dudley Morton's Concept of Disordered Foot Function. J Foot Ankle Surg. 45: 147–155, 2006

5. Grebing B Coughlin M : Evaluation of Morton's Theory of Second Metatarsal Hypertrophy. J Bone Joint Surg. 86–A: 1375–1386, 2004

6. Grebing B Coughlin M : The Effect of Ankle Position on the Exam for First Ray Mobility. Foot Ankle Int. 25: 467–475, 2004

7. Jones C Coughlin M Pierce-Villadot R : The validity and reliability of the Klaue device. Foot Ankle Int. 26: 951–956, 2005

8. Morton D : The Human Foot: its evolution, physiology, and functional disorders. New York, Columbia University Press. 1935

9. Root ML Orien WP Weed JH : Motion of the joints of the foot: the first ray. In Clin Biomechanics Vol II Normal and Abnormal function of the foot. SA ROOT, Clinical Biomechanics, Los Angeles. 1977

10. Smith BW Coughlin MJ : The first metatarsocuneiform joint, hypermobility, and hallux valgus: what does it all mean? Foot Ankle Surg. 14: 138–141, 2008