Submit Your Testimonial About the Experience How was your overall experience?: Poor Good Best Satisfactory Excellent Comments: Dr. Darr is a gifted surgeon who wants the best for you, the patient. I had knee replacement surgery in 2019. Surgery went very well. Recovery is taking longer than I thought - but my knee is great and other orthopedic issues have been reduced greatly. Dr. Darr has performed two surgeries on my right knee (2011 and 2019) and both were very successful.