[Clinical outcome, 6 years after robot assisted hip endoprostheses implantation--a prospective study].
OBJECTIVE
In our prospective study we evaluated the clinical and radiological results of 36 patients who had a robot-assisted implantation of a cementless hip endoprosthesis.


METHODS
All patients underwent a standardised examination preoperatively, 1 year after the operation and 6 years postoperatively. We evaluated the pain of the patients with the help of a visual analogue scale, the range of motion of the hip joint and subjective and objective parameters according to the Harris hip score and the Merle d'Aubigné score. With X-rays loosenings and movement of the stems were evaluated. All patients were operated by the same team.


RESULTS
The clinical results were very good. A highly significant pain reduction could be documented. We also saw a significant improvement in the range of motion and the hip scores. In 1 case a loosening of the stem happened after 5 years, in another patient the stem broke out a few days after implantation. The reason for this was not a mistake of the robot but the wrong preoperative planning. Other complications were not observed.


CONCLUSIONS
Considering the good biochemical results in the literature, our study suggests good long-term results after robot-assisted hip surgery. The drawbacks and complications of robot-assisted hip surgery, which were documented especially in the popular press, cannot be confirmed.
Prymka
M
M
Orthopädische Klinik des Universitätsklinikums Schleswig-Holstein, Campus Kiel. drprymka@hotmail.com
Hassenpflug
J
J
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation*; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D010043:Outcome and Process Assessment, Health Care; D010147:Pain Measurement; D011183:Postoperative Complications / Q000000981:diagnostic imaging*; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D012371:Robotics / Q000295:instrumentation*