Why does my woman's knee ache and stiffen?

A bulging disc pressing against nerves can cause pain and affect your balance. Falling is dangerous. You better go back to the hospital. They might have to change your medicine or try something else. 

To stop arthritis from progressing, you need to avoid running, squatting, jumping, stairs, cross legged sitting. Do weight reduction and quadriceps and hamstring strengthening exercises.

Shoulder dislocation requires quick medical attention so that the dislocation can be assessed and joint space is reduced.
Shoulder dislocation causes damage to soft tissues, 
Acupuncture helps in reducing the inflammation and pain caused due to dislocation and it plays an important role in promoting soft tissue healing.
Acupuncture anaesthetic points, Local and general body points together help to heal the dislocated shoulder. Electro Acupuncture, Moxibustion, Acupressure and Seed therapy combined with medical aid helps to quicken the total recovery time.

The pain might come from a varicoce­le, like a varicose ve­in in your testicle. It slows blood flow and causes aching. To he­lp, wear supportive underwe­ar and avoid standing too long. But if pain worsens or you notice swelling or change­s in your testis, see a doctor. This rule­s out serious problems.