Team Members: Jonathan Coulter Liang Dong Chris Holmes Haroon Osmanzada Faculty Advisors: Dr. Sebastian Bawab Dr. Stacie Ringleb Naval Medical Center Advisor: Dr. Marlene DeMaio

 Focus of the Research ◦ Evaluate several surgical techniques for repairing the anterior and posterior cruciate ligaments ◦ Evaluate the effectiveness of total knee arthroplasty

 Joints that are composed of bones, muscles, ligaments, capsules, and articulate cartilage

 Savio Woo, et al. – Robotic/UFS System ◦ Shoulder and Knee ◦ Repeatability of motion and forces (6 DOF) ◦ Completely fix femur

 Lawrence D. Noble, et al. – General Purpose Musculoskeletal Simulator ◦ Walking, Running, and Jumping ◦ 6 DOF

 3 Degrees of Freedom  Positional Repeatability ◦ Stainless Steel Bellow Coupler  Loading from both Femur and Tibia  Position control  Force Control In Progress

CQUAD: Top u-channels, bottom u-channels, back L-angles, cantilever beam base plate, and screw drive case. CBAR: Cantilever beam, side rails of the screw drive, and middle screw. RBE2: All the joint areas between plates, the screw drive case to the back angles, the screw drive case to the side rails, and cantilever beam base plate to rods of the screw drive case.

 Hand Calculations: Cantilever Beam

Square Tube is Aluminum 6061 (T6) b = 3 in. L = 24 in. t = 1/4 in. 3 in by 3 in by 1/4 in Square Tube Moment Calculations

 Hand Calculations: Cantilever Beam Stress Analysis Deflection Calculations

 Hand Calculations: Weld

 Hand Calculations: Top Channel

 Hand Calculations: Clevis Pin

 Comparison to Patran

Apparatus in Motion