This leg, his right leg, now takes an awful beating because he has to half-crawl, to keep up with his friends, keep up with his brothers and sisters, than to get up on his crutches and walk.
松葉杖をついて歩くのでは 遅すぎるので ウマーは 半ば地面を這ってついていき、 そのために右足はボロボロです。