Design Of Knee Prosthesis and Analysis-Ashish Sharma
DESIGN OF KNEE PROSTHESIS Ashish Sharma
Common Causes of Knee Pain and Loss of Knee Function ARTHRITIS• Osteoarthritis (wear and tear)• Rheumatoid arthritisPost-traumatic arthritis caused by: • Fractures • Ligament injuries • Meniscus tears
Knee Prosthesis comprised of• Femoral- replaces arthritic portion of thigh bone• Tibial- replaces arthritic portion of shin bone• Tibial insert- replaces cartilage and acts as shock absorber• Patella- replaces knee cap
Types of Knee Prosthesis• Fixed Knee Prosthesis : The more traditional fixed bearing implant which can only flex and extend• Mobile-Bearing Prosthesis: More advanced the rotating platform knee implants move almost like a normal knee joint. They allow the knee to twist and turn (rotation) as well as flex and extend. The Rotating Platform Knee is designed to bend and rotate, move back and forth, flex and extend, helping to accommodate more normal movement.
Design Input KNEE REPLACEMENT SYSTEM byDistal Portion of Femur Amplitude