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Journal: Journal of Experimental Biology
J Exp Biol (2003) 206 (6): 1085–1097.
Published: 15 March 2003
... flexion system alone could be used to trace adaptations to different locomotion patterns by different groups of birds. We focused on ankle flexion, and measured the length ( tmt ) of the tarsometatarsus,representing the out-force lever arm, and the distance ( d ) between the ankle joint and the tendon...