I have worked extensively with a sports chiro for a running issue that came up last September and have experienced quite an improvement. That being said I never had to slightly drag my leg because it hurt. My suggestion is to see a sports medicine doc. While I do believe there is a place for sports chiros, with a history of arthritis you may be altering your running biomechanics to account for this issue. You may even want to see if you can get a referral to a physical therapist.