“…This agrees with previous studies across various divisions of orthopedic surgery, including shoulder, knee, hip, spine, and trauma [ 3 – 6 , 10 – 33 ]. Additionally, this study agrees with the well-documented conclusion that resident presence increases operation time [ 3 , 4 , 13 , 15 – 17 , 21 , 22 , 25 , 29 , 31 , 33 , 35 ].…”