As a 'young' candidate for a knee replacement at 40 years old in 2000, exhaustive research led me to Dr. Haas at HSS in NYC. The course of my life was forever changed by his talent as a surgeon, sharing of knowledge and most of all, compassion of a magnitude that required nothing less than me paying that same compassion forward. He and his staff are truly a gift to the hospital and to those requiring his unique talent and skills in orthopedics.