I had some knee problems for a time, which a physical therapist diagnosed as a muscle imbalance - basically one leg was stronger than the other, and it caused me to twist my legs a bit while running.
The main exercises to correct this were one legged squats, leg extensions (again, one leg at a time), and several balance exercises to help me position my hips properly while running.
Obviously, though, if there's one thing we've learned, it's that there's a lot of variety in our bodies, so if you're having pain, see a doctor first and if they think it's necessary you can get a referral to a physical therapist or another doctor that specializes in that area.
The main exercises to correct this were one legged squats, leg extensions (again, one leg at a time), and several balance exercises to help me position my hips properly while running.
Obviously, though, if there's one thing we've learned, it's that there's a lot of variety in our bodies, so if you're having pain, see a doctor first and if they think it's necessary you can get a referral to a physical therapist or another doctor that specializes in that area.