大腿前侧的股四头肌使膝关节伸直。
The quadriceps at the front of the thigh straightens the knee.
股四头肌和大腿前侧使膝盖伸直。
The quadriceps along the front of the thigh straightens the knee.
不过，他们确知的事是，加强大腿股四头肌的力量，可减低关节进一步受损的机会。
They point out, however, that strengthening the quadriceps could prevent further damage.
不过，他们确知的事是，加强大腿股四头肌的力量，可减低关节进一步受损的机会。
They point out, however, that strengthening the quadriceps could prevent further damage.
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