Does Orthopaedic Training Compromise the Outcome in Knee Joint Arthroplasty?

New Zealand has a high rate of attending surgeon performed TKA and UKA. Revision rates were not increased in resident surgeon groups. Postoperative function was not reduced by a clinically significant amount in TKA in any of the resident surgeon groups but was reduced in supervised junior resident and unsupervised senior resident surgeon groups for UKA.