It took surgeons 55 to 60 cases to get femoral components within ?5? of planned placement.
British and Australian researchers collaborating on a prospective study identified a longer-than-expected learning curve to accurately perform hip resurfacing arthroplasties.
Hip surgeons taking part in the study, all of whom had performed more than 1,000 hip surgeries, found they had to complete three-times more resurfacing surgeries than they expected in order to place the femoral hip resurfacing components within ?5? of the desired neck/head angle, said Diane L. Back, FRCS.
The surgeons had initially estimated their learning curve at 10 to 20 cases, Back told Orthopedics Today.
"The results actually showed that it took 55 to 60 cases for most of our surgeons to get the femoral component where they actually planned it," she said.
…The longer-than-expected learning curve has huge implications for surgeons’ success with this type of hip replacement, Back told Orthopedics Today.
"Hip resurfacing is good. I think that is well proven. You have to choose your right cases, but it does take you longer than you expect to learn. I think medico-legally it does have some implications."
For example, surgeons just learning the procedure should tell patients they are at the beginning of their learning curve and have not done many of the procedures, she said.
In the United States where orthopedists begin practicing after completing fewer hip replacements than surgeons in the United Kingdom or Australia, "It actually means their learning curve may take them 10 years to get out of," Back said.