There are many possible causes of hip pain. They include serious ones, like a fracture or joint infection, and less serious causes, like bursitis.
Patellofemoral pain syndrome (PFPS) is a common cause of knee pain. It happens when the area at the front of the knee, behind the kneecap, becomes overloaded.
Pain in your hip can be caused by hip bursitis. Hip bursitis is when the small fluid-filled sacs (bursa) on the outside or inner part of your hip get inflamed.
Chondromalacia patella, also known as runner's knee, is a knee condition that can cause pain and grinding when the knee is flexed. It's due to the breakdown in the cartilage on the undersurface of the kneecap (patella) that causes bones to rub against each other.
Your shoulder is a ball and socket joint and very mobile. It may hurt for many reasons, from injury and overuse to chronic conditions or diseases. You need to know the cause to get effective treatment.