Starting a car includes a series of noises, but a loud grinding shouldn’t be a part of it. Here’s why. A lot happens under the hood of a car when it starts up. The fuel pump sends fuel to the ...

Self-reported knee crepitus may predict osteoarthritis 1 year following ACL reconstruction, according to findings published ...

DEAR MAYO CLINIC: One of my knees makes an odd crackling sound (like the sound you might hear when scrunching plastic wrap) when I go down a flight of stairs. However, I don't have any knee pain.

Orthopaedic surgeons have traditionally been taught that certain types of knee symptoms indicate damage to specialized structures called the menisci. But these "meniscal" and "mechanical" symptoms do ...