Knee's okay

I got an A or A+ from the surgeon at my check-up today! It's been three months and three weeks since my right knee was replaced on July 1, and he said I'm coming along great. There's still a few side-effects I'm dealing with ... on our recent trip, the hours of driving and riding stiffened me up and I also had aches in the hips and lower back. Now that we've been back a week and been to the rec center several times, the aches are receding and I'm sleeping better. If the sacroiliac pain doesn't further subside, he said there are exercises that can address it. tv