If you're experiencing a buzzing sensation in your knee that doesn't have any other symptoms, it is probably not something serious. The buzzing feeling may be the result of a nerve issue or a reaction to some medication you are taking. It might also be caused by stress or anxiety.
Muscle twitching can occur in your knees and other parts of the body, and it's usually a normal response to stress. However, if you experience frequent muscle twitching or it's getting worse, it's important to see your doctor as this could be an early sign of a neurological disorder like essential tremor.
A tingling sensation in your knee can also indicate damage to a nerve in the area. This is called peripheral neuropathy and can be a side effect of diabetes or some medications.
Your knee has ligaments that act as strong ropes to hold the bones in place and control movement. They include collateral ligaments, which are found on the sides of your knee, and cruciate ligaments, which cross each other to form an X shape inside your knee joint. The femoral nerve runs through the center of your knee and supplies many of the sensors in the area, including those that detect numbness and vibration.
Typically, when you hear the sensation of your knee vibrating, it means that the tendons and ligaments are tight or stretched. You can try stretching or self-massage to help ease this tension. You can also use a foam roller to loosen the kinks in your muscles, which will reduce the pressure put on your knee joint.