Novel Polysaccharide-derived Fixation Device for Anterior Cruciate Ligament (ACL) Reconstruction

Team #13 Weekly MeetingAlexander Werne, Derek Holyoak, Benjamin

Roberts

Faculty AdvisorDr. Krystyna Gielo-Perczak

ClientsDr. Sangamesh Kumbar

Gloria Kolb

Summary of TimelineFinalize ANSYS TestingFinalized SolidWorks drawings to

Tom Mealy for 3D Printing in ME Lab

Visit Dr. Kumbar’s lab to evaluate heat press for molding technique

Molding of our devices from biodegradable material

Physical Testing in April

Alternate Design IdeasSince Dr. Kumbar expressed a

desire to use a hamstring graft instead of a bone block graft, we have begun working on alternate designs for our device

Eliptical Cavity instead of circular to increase amount of material supporting the hamstring graft

Alternate Device

Device Testing in ANSYS

Max Stress:6.5e8 Pa

Max Stress:3.06e7 Pa

Interference Screw DesignPitch = 8Length = 30mm (typical for tibial

design)Diameter = 10mmThreads dulled since used for

securing soft tissue graft◦Sharper on the tapered end of screw

Interference Screw Design

Interference Screw Testing in ANSYS

Future WorkFinalize ANSYS Testing

◦Final SolidWorks Design for Manufacturing

Speak with Tom Mealy to 3D print a scaled-up version of our devices for next meeting