As a result, she says, some of the injuries associated with running, such as runner’s knee, are uncommon among race walkers.
请问这里的 are 是与哪个主语保持一致?这样的问题如何定位主谓一致?
你的问题确定主语很重要。该句的主语是 some of the injuries,为复数,故谓语动词用 are。
句中的 as a result 是状语(表结果),she says 是插入语,some of the injuries 是主语,associated with running 是修饰名词 injuries 的定语,such as runner’s knee 是状语(表例举)。