Orthopedic AdaptorOrthopedic Adaptor

• Kate Huddleston

• Anna Duloy• Alexander Byall• Ashley

Goodnight

Project BackgroundProject Background• 300,000 total knee arthroplasties per

year• Total knee arthroplasty = total knee

replacement• major complications of total knee

arthroplasty: – Loosening of joints– Osteolysis – Periprosthetic femoral fractures

ChallengesChallenges• Fractures around knee implants

pose unique fixation challenges• Long-term presence of prosthesis may

change the structure of the bone leading to increase susceptibility to fracture

• The original placement of the knee implant • The prosthetic joint may interfere with

healing• Age of patient• Little bone left to work with

Knee Replacement Knee Replacement ComponentsComponents

Project DefinitionProject Definition

• We are designing an adaptor that will connect the nail inserted into the shaft of the femur to the knee prosthesis

Design SpecificationsDesign Specifications

• Holding the nail 5 degrees relative to the prosthetic joint

• Attach nail to prosthesis• Maintain rigid structure• Irremovable knee prosthesis• Little bone to work with

Current StatusCurrent Status

• NCIIA Proposal, Web Page Design• Background research

- biomechanics of the knee - design of nail and prosthesis

• Brainstorming and Idea Generation- Ball bearings- Umbrella- Turn and lock

Future WorkFuture Work

• Analyze possible connecting methods between nail and adaptor

• Continue idea generation and brainstorming

• Discuss ideas with advisors