But as Ritzenhein practiced the new stride , he developed irritation of the tendon - sheathed and jelly - bean - size sesamoid bones behind his right big toe .
Salazar encouraged him to strike at the midfoot or toward the forefoot .
As Ritzenhein practiced the new stride , he developed irritation of the tendon - sheathed and jelly - bean - size sesamoid bones behind his right big toe .
Salazar encouraged him to strike at the midfoot or toward the forefoot .