Range of motion after total hip arthroplasty: Simulation of non-axisymmetric implants

  • Constantinos Nikou
  • Branislav Jaramaz
  • Anthony M. DiGioia
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1496)


Dislocation following total hip replacement surgery represents a significant cause of early failure, incurring additional medical costs and patient distress. One major cause of dislocation is implant impingement. The most important factor in preventing implant impingement is correct implant orientation. This paper describes the newest version of a prosthetic range of motion simulator which permits prediction of prosthetic range of motion for non-axisymmetric femoral and acetabular implants. This analytical methodology could be used as a preoperative simulation tool that can help surgeons decide the implant placement that reduces the chance of implant impingement. Coupled with a computer-assisted clinical system for precise implant positioning, this approach could significantly reduce the risk of dislocation, maximize the “safe” range of motion, and minimize the risk for complications arising from impingement.


Neck Length Body Coordinate System Orthopaedic Research Society Acetabular Implant Additional Medical Cost 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Constantinos Nikou
    • 1
  • Branislav Jaramaz
    • 1
    • 2
  • Anthony M. DiGioia
    • 1
    • 2
  1. 1.Center for Medical Robotics and Computer Assisted SurgeryCarnegie Mellon UniversityPittsburgh
  2. 2.Center for Orthopaedic ResearchUPMC Shadyside HospitalPittsburgh

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