The quadriceps (or 'quads') muscle is the large muscle at the front of the thigh, and is composed of four heads.
Page updated September 2023 by Dr Sheila Strover (Clinical Editor)
The quadriceps and the extensor mechanism
The quads is linked to the tibia via the patella and the patellar tendon, as well as via fibrous tissue around the patella. The whole structure moves in concert when the knee is extended - and is known as the extensor mechanism.
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