HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Full Text (PDF) Submit a response Alert me when this article is cited Alert me when Rapid Responses are posted Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Glasoe, W. M Articles by Saltzman, C. L Search for Related Content PubMed PubMed Citation Articles by Glasoe, W. M Articles by Saltzman, C. L Related Collections Anatomy and Physiology: Musculoskeletal System Injuries and Conditions: Foot Updates Social Bookmarking                      What's this?

Anatomy and Biomechanics of the First Ray

WM Glasoe, PT, ATC, is Staff Physical Therapist and Research Therapist, Physiotherapy Associates, 600 7th St SE, Cedar Rapids, IA 52401 (USA) (wglasoe@aol.com). Address all correspondence to Mr Glasoe
HJ Yack, PhD, PT, is Associate Professor, Physical Therapy Graduate Program, College of Medicine, The University of Iowa, Iowa City, Iowa
CL Saltzman, MD, is Associate Professor, Department of Orthopaedic Surgery and Biomedical Engineering, University of Iowa Hospitals and Clinics, Iowa City, Iowa

Key Words: Arch • Forefoot • Pathology

Because this article has no abstract, we have provided an extract of the full text and any section headings.

	Introduction

 
The medial longitudinal arch serves as the chief load-bearing structure in the foot^1–3 and is dependent on the kinematics of the first ray for optimal support during gait.⁴ The first ray is a single foot segment consisting of the first metatarsal and first cuneiform bones.⁵ Pronation of the subtalar joint lowers the first ray to the ground in early stance⁵ and dissipates the shock of heel impact.³ As body weight moves forward, the mechanics of supination stabilize the medial arch, preparing the foot for the propulsive phase of gait. The dichotomous actions of weight acceptance and weight-bearing stability required of the first ray underscore the importance for clinicians who treat the foot to understand the biomechanics of the first ray.

The importance of the first ray to the mechanics of the foot is, in part, because of the metatarsocuneiform joint's location, which intersects the transverse and medial longitudinal arches.⁶ A . . . [Full Text of this Article]

	Functional Anatomy of the First Ray

 

	Pathomechanics of a Stiff First Ray

 

	Pathomechanics of a Hypermobile First Ray

 

	Conclusion

 

CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this?

This article has been cited by other articles:

				W. M. Glasoe, D. J. Nuckley, and P. M. Ludewig Hallux Valgus and the First Metatarsal Arch Segment: A Theoretical Biomechanical Perspective Physical Therapy, January 1, 2010; 90(1): 110 - 120. [Abstract] [Full Text] [PDF]

				M. W. Cornwall, W. D. Fishco, T. G. McPoil, C. R. Lane, D. O'Donnell, and L. Hunt Reliability and Validity of Clinically Assessing First-Ray Mobility of the Foot J Am Podiatr Med Assoc, September 1, 2004; 94(5): 470 - 476. [Abstract] [Full Text] [PDF]

				J. A Shrader and K. L. Siegel Nonoperative Management of Functional Hallux Limitus in a Patient With Rheumatoid Arthritis Physical Therapy, September 1, 2003; 83(9): 831 - 843. [Abstract] [Full Text] [PDF]

				M. W. Cornwall and T. G. McPoil Motion of the Calcaneus, Navicular, and First Metatarsal During the Stance Phase of Walking J Am Podiatr Med Assoc, February 1, 2002; 92(2): 67 - 76. [Abstract] [Full Text] [PDF]