Answer
The following are the main muscles ( two joint muscles) that cross both the hip joint and the knee join and produce actions at both.
Sartorious: Flexes hip and knee. It also abducts and laterally
rotates the thigh.
Tensor fasciae latae: medially rotates and abducts thigh;
flexes and extends knee; laterally rotates and stabilizes
hip joint.
Gluteus maximus: Extends hip at thigh; it also stabilizes and flexes
tibia.
Work Step by Step
Rectus femoris-- the only quadriceps that crosses both joints.
Actions: hip flexion and knee extension
Hamstring muscles: ; flex knee and extend hip-- in walking.
