The quadriceps contracts, pulling on the patella which is connected to the tibia by the patellar tendon. The force of this contraction brings the knee into extension.

四头肌缩短，连接胫骨髌腱拉动髌骨上拉。这收缩的力量带来膝进入延长。

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Conclusion This formula served as a reliable basis for the elongation of the femoral quadriceps 'tendon.

结论经验公式可为股四头肌肌腱延长术提供可靠的理论依据。

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All of the surgeries were performed via a medial parapatellar approach that incised the quadriceps tendon along its medial border.

所有的手术采用内侧髌旁入路，沿着股四头肌腱的内侧边界切开。

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His condition, patellar tendinitis, can be described as inflammation of the tendon that attaches the quadriceps (thigh muscle) to the tibia (shin bone).

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