Not sure I understand the question...
The hip and the knee can rotate to the same direction as well as in opposite directions, either bearing body weight or not bearing body weight.
As a side note, in Chinese Martial Arts the hips are frequently externally rotated and knees internally rotated simultaneously in order to produce tension in the legs.
Peace!
Flexion, extension, rotation, adduction of the hip, extension and rotation at the knee
Flexion, extension, rotation, adduction of the hip, extension and rotation at the knee
knee flexion and hip extension.Biceps femoris also: knee external rotation and hip external rotation.Semi tendinosus and Semi membranosus also: knee internal rotation and hip internal rotation.hamstrings eccentric contraction causes knee extension and hip flexion, whilst the antagonist muscles are passive.
Flexion, abduction, and lateral rotation at the hip, and flexion and medial rotation at the knee.
Tension in the posterior cruciate ligament when maintaining flexing a knee creates a lateral rotation in the tibia. This feature plays an essential role in locking the hip for stabilization.
Some devices that can prevent external rotation of the leg include knee immobilizers, hinged knee braces, and hip abduction braces. These devices help to restrict movement and stabilize the leg and hip joint, reducing the risk of external rotation or unwanted movement.
It is not a separate joint it is your hip joint, the hip joint is a ball & socket joint!!!
A disability affecting the foot or joints in the Knee, hip and lower back related to walking/running.
If you are looking for the answer of what assists all of those movements at the same time, the answer would be the Gluteus Medius and Minimus muscles. Think of a squat, while you are squatting both your hip and knee are flexed (the gluteus medius and minimus are the stabilizers/assisters during a squat), and while the hip is flexed the gluteus medius can internally rotate the thigh.
Circumduction and rotation ARE possible around the hip joint.
Some effective stretches for improving hip internal rotation include the seated hip internal rotation stretch, the supine hip internal rotation stretch, and the pigeon pose stretch. These stretches can help increase flexibility and range of motion in the hip joint.
Vertebral Foraminal Entrapment on Hip Flexion and Knee Extension