OTE200: Hip replacement proficiency

What is the minimum yearly volume of total hip replacements you believe an orthopaedic surgeon must perform to maintain his or her proficiency?

A note from the editors: The OTE200 is a group of approximately 200 European orthopaedic practitioners, educators and researchers whose opinions we poll each month. If you would like to be considered for membership, please send a request to orthopaedics@healio.com.