I needed a second surgery with a different doctor after my experience with Dr Kweon.Dr Kweon performed ACL reconstruction on my knee, and after 9 months of physical therapy I was still experiencing pain in my knee. Dr Kweon was dismissive of this pain and said it would resolve on its own.After getting another opinion I had an MRI done and loose bodies that were left from the original surgery were found in my knee. This required a second surgery on my left knee to remove these.Avoid if you can.