I had a very painful left knee, I could not walk without pain or a limp. I went to Twin Cities Orthopedics and saw Dr. Arntson. He found that I had bone on bone in my left knee. Dr. Arntson helped me understand the problem, he was very compassionate and caring. He explained that I needed my knee replaced. Dr. Arntson did the surgery at Mercy Hospital and he did a wonderful job. My knee is healing wonderfully and I am able to walk without pain or a limp. My follow-up appointment went very well, he explained everything about the healing process. I would highly recommend Dr. Arntson, he did a wonderful job on my knee and I now walk without pain and up-right. Janet P.