The learning curve of the direct anterior approach is 100 cases: an analysis based on 15,875 total hip arthroplasties in the Dutch Arthroplasty Register oleh Rinne M Peters, Bas L E F ten Have, Kyrill Rykov, Liza van Steenbergen, Hein Putter, Marijn Rutgers, Stan Vos, Bob van Steijnen, Rudolf W Poolman, Stephan B W Vehmeijer, Wierd P Zijlstra