I fell twice last wk and now i have bruises on my knee,they look blue and yellow, is that normal?also have 2 hip implants 11 yrs ago,could i have fallen cause of them wearing out? i still have my scooter from it and wondered if i should use that?

The skin discolorations are normal and are products caused by the breakdown of blood. In days or a week or two more these discolorations will resolve. I wouldn't blame your hip prostheses for the falls unless you've been experiencing hip or groin pain from their loosening. Xrays or a bone scan along with an examination by your physician or orthopedic surgeon can evaluate the status of your hips

I am concerned about 2 falls in one week. The color of the bruises is not unusual. Hip replacements do not cause falls alone. Other joint, muscle and nerve problems can contribute. Please see an orthopedic, rehabilitation or primary physician to review this concerning problem. Physical Therapy can help if no clear medical causes are found.