Could my knee pain be arthritis?

Causes
Knee injuries
Sprains, strains and tears are all types of knee injury. These can be caused by sports injuries, but you don’t have to be sporty to have this type of knee pain.

Tendonitis
Sore or painful knees can be a sign of tendonitis.

This is when a tendon swells up and becomes painful – for example, after an injury. Visit the NHS website for more information on tendonitis.

Osgood-Schlatter’s disease
This is a condition that can affect children and young people. In Osgood-Schlatter’s disease, the bony lump below your knee cap becomes painful and swollen during and after exercise.

Patellofemoral pain syndrome
This is a common knee problem, that particularly affects children and young adults. People with patellofemoral pain syndrome usually have pain behind or around the kneecap.

Pain is usually felt when going up stairs, running, squatting, cycling, or sitting with flexed knees.

Exercise therapy is often prescribed for this condition.