This is a early sign of knee dysfunction.
We need to know your age
If you are a female post 40 Yrs of age peri menopausal related osteoporosis can affects and weakens bones and joints
So any medical concerns attend early and ensure it is not progressing and make the treatment cumbersome
Next Steps
Proper blood and radiological evaluation will support the diagnosis and plan treatments and home remedies accordingly
Health Tips
Above 40yrs irrespective of gender avoid using stairs and using floor sitting and indian toilets