Crepitus in the knees may be caused by knee injuries such as meniscus tears. These are fairly common in people who play sports, jog, or run. A meniscus tear can cause crepitus as the joint moves. Chondromalacia patella is a dull ache behind the kneecap, usually caused by overuse or injury.
Likewise, what is a floating knee cap?
Luxating patella (or trick knee, subluxation of patella, floating patella, or floating kneecap) is a condition in which the patella, or kneecap, dislocates or moves out of its normal location.
Why does my knee cap move?
That certainly is the case with your knee. As long as your kneecap (patella) stays in its groove in the knee, you can walk, run, sit, stand, and move easily. When the kneecap slips out of the groove, problems and pain often result.
What is subluxation of the knee?
A subluxing patella (kneecap) is a temporary, partial dislocation of the kneecap from its normal position in the groove in the end of the thigh bone (femur). This groove is located between two bumps at the end of the thigh bone called the femoral condyles. You may have swelling and pain behind the kneecap.