A member asked:

Are there any muscles in the lower leg that are responsible for bending and straightening the knee?

A doctor has provided 1 answer
Dr. Stephen Southard answered

Specializes in Internal Medicine

Mostly: upper leg muscles are responsible flexion and extension around the knee. The gastrocnemius(calf muscles), popliteus, and plantaris can contribute to knee flexion though, and are lower leg muscles.

Answered 10/21/2018

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