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n Video 1: Dorsi and plantar flexion ©2010 Primal Pictures

Video 2: Inversion and eversion ©2010 Primal Pictures

Video 3: Animation showing gait cycle in walking. ©2010 Primal Pictures

Video 4: Animation showing gait cycle in running. ©2010 Primal Pictures

Video 5: Right foot pronating then supinating in stationary

n Video 7: Video from YouTube user ChrisML123 (produced by Arthritis Research Council)

n Video 6: Pronation displayed more on the right foot than the left during running:

Additional web resources n Website 1: Function of the joints of the hind foot from Glasgow University http://bit.ly/c6xvLy

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n Video 8: Anterior drawer test for the ankle (courtesy of YouTube user sportsinjuryclinic.net)

sportEX medicine 2010;46(Oct):11-16