The patella (knee cap)
It is perfectly fine if the knee cap moves just a little bit, because some people can do that. Though, if the knee cap moves too much, then it becomes a health concern.
The knee is not a fixed joint it is a pivotal hinge joint; they are completely different a fixed joint barely moves where as a pivotal hinge joint moves in four directions.
When a guy moves his head from resting on your knee higher to you thigh, then your pelvis, he is being suggestive, and stop him if you are uncomfortable with it.
No, the knee joint is classified structurally as a condyloid joint.Yes because it moves in one way-like a hinge
it moves by going up and down, like your knee
It is essential for walking because it moves your leg.
It is essential for walking because it moves your leg.
Highly unlikely. Ordinary painkillers will be considered enough for that.
it might be a tumor. you should go to a specialist.
The knee is most susceptible joint for injury for an umber of reasons. The biggest reason is that the knee has limited motion and only moves in a door hinge fashion. It connects the two largest bones in the body.
In addition to simple flexion (bending) and extension (straightening) movements, the knee joint is designed to allow for rotation, gliding, and rolling movements.
Extreme pain radiating up the front, sides, or back of the knee. Trouble walking and keeping balance and weight on the affected leg. Knee cap moves easily when touched. Bruising and swelling around the affected knee.