The phrase "creaky joints" refers to a sound or feeling of stiffness or noise coming from one's bones when they move, usually due to age or arthritis. Full definition
So when you get out of bed with creaky joints or an aching back it finally may be time to participate in regular exercise. (jaylabpro.com)
Dolly's slightly creaky joints may have stemmed from giving birth to six lambs, including Bonnie. (sciencenews.org)
The ability to make pure populations of these cells within days rather than the weeks or months previously required is a key step toward clinically useful regenerative medicine — potentially allowing researchers to generate new beating heart cells to repair damage after a heart attack or to create cartilage or bone to reinvigorate creaky joints or heal from trauma. (med.stanford.edu)