Moreover , postoperative complications ( eg , dislocation and revision surgery ) were less frequent in the CM group than in the RA group .
Conclusion Compared with the CM approach , the RA approach yields better radiological outcomes and fewer intraoperative complications in THA , but similar functional scores
Abstract Background Several studies have compared robotics‐assisted ( RA ) and conventional manual ( CM ) approaches for total hip arthroplasty ( THA ) , but their results are controversial .
Primary and Revision Total Hip Replacement Using the Robodoc® System
The ROBODOC ® system was design ed to address potential human errors in performing cementless total hip replacement . The system consists of a preoperative planning computer workstation ( called ORTHODOC ) and a five-axis robotic arm with a high speed milling device as an end effector . The combined experience of the United States Food and Drug Administration multicenter trial and the German postmarket use of the system are reported . The United States study is controlled and r and omized with 136 hip replacements performed at three centers ( 65 ROBODOC ® and 62 control ) . Followup was 1 year on 127 hip replacements and 2 years on 93 hip replacements . No differences were found in the Harris hip scores or the Short Form Health Survey outcomes question naire . Length of stay also was not different , but the surgical time and blood loss were greater in the ROBODOC ® group . This was attributed to a learning curve at each center . Radiographs were evaluated by an independent bone radiologist and showed statistically better fit and positioning of the femoral component in the ROBODOC ® group . Complications were not different , except for three cases of intraoperative femoral fracture in the control group and none in the ROBODOC ® group . The German study reports on 858 patients , 42 with bilateral hip replacements and this includes 30 revision cases for a total of 900 hip replacements .  The Harris hip score rose from 43.7 to 91.5 . In these cases the surgical time declined quickly from 240 minutes for the first case to 90 minutes . No intraoperative femoral fractures occurred in 900 cases . Other complications were comparable with total hip replacements performed using conventional techniques . The ROBODOC ® system is thought to be safe and effective in producing radiographically superior implant fit and positioning while eliminating femoral fractures
Moreover , postoperative complications ( eg , dislocation and revision surgery ) were less frequent in the CM group than in the RA group .
Conclusion Compared with the CM approach , the RA approach yields better radiological outcomes and fewer intraoperative complications in THA , but similar functional scores
Abstract Background Several studies have compared robotics‐assisted ( RA ) and conventional manual ( CM ) approaches for total hip arthroplasty ( THA ) , but their results are controversial .