Imageless robotic handpiece-assisted total knee arthroplasty: a learning curve analysis of surgical time and alignment accuracy

• DOI: 10.1007/s00402-021-04036-2
• Publication Date: 2021-07-14T10:03:05Z
• Authors: Peter Savov; Lars-Rene Tuecking; Henning Windhagen; Jonathan Ehmig; Max Ettinger
• Keywords: CUSUM; Learning curve

Robotic-assisted surgery techniques are increasing in total knee arthroplasty (TKA). One crucial point is the prolonged time of surgery. The primary objective this study was to determine learning curve necessary minimize secondary evaluate accuracy implant alignment when using an imageless robotic system for TKA.In a case-control study, first 70 consecutive robotic-assisted TKA procedures performed by single senior surgeon were analyzed with regard and comparing intraoperative plan postoperative alignment. evaluation respect conducted cumulative summation (CUSUM) analysis. joint line height measured new technique. Surgery reconstruction compared conventional procedures.The completed after 11 cases. did not influence obliquity, height, or limb designed precisely implemented. mean skin-to-skin group differ from that manual group. A significant positive correlation observed between preoperative hip-knee-ankle angle distalization group.After completing initial cases, required perform handpiece-assisted similar However, no positioning system. implementation accurate up < 2°. precision allows different balancing approaches valgus varus morphotypes.