Knee-Loading Device

Group Members:Jonathan Coulter

Liang DongChris Holmes

Haroon Osmanzada

Faculty Advisors:Dr. Sebastian Bawab

Dr. Stacie Ringleb

Naval Medical Center Advisor:Dr. Marlene DeMaio

LinTech Table and Quicksilver Motor Specs

Refresher

• Project initially started Summer 2008– Joint project entitled “The Helical Axis of Motion of the

Human Knee”• Collaborative effort between the Naval Medical Center

in Portsmouth (NMCP) and Old Dominion University.– Focus of the Research • Evaluate several surgical techniques for repairing the

anterior and posterior cruciate ligaments.• Evaluate the effectiveness of total knee arthroplasty.

Background

• Statistics– According to Darin Padra, Ph.D of UNC, there are

an estimated 95,000 new anterior cruciate ligament (ACL) injuries each year

– Of those that undergo a surgical procedure, only about 75 percent can return to their previous activity levels

– Of these 95,000 cases, 45,000 are high school athletes

Problem Definition

• Much debate exists among orthopedic surgeons about the proper treatment of a PCL injury.

• In order to compare different techniques with intact knee motion, tests will be preformed on the intact knee and then either the ACL or PCL will be cut and then repaired.

• Data obtained will lead to a better understanding of how the knee functions

Plan of Work

• NMCP + ODU– The goal of the joint biomechanics knee project is

to design an apparatus that will test cadaveric knee joints in order to better understand the kinematics of the human knee motion.

• ODU– To design an apparatus that suits the

requirements requested by Dr. DeMaio.

Responsibility• Structural Component Analysis– Jonathan Coulter– Chris Holmes

• Linear Screw Drive, Motor, and Controller– Liang Dong– Haroon Osmanzada

• Patran– Liang and Chris

• AutoDesk Inventor– Haroon and Jay

• Cost Analysis– Liang Dong

Gantt Chart

Patran Progress

• Initial Model• Updated Models

Next Steps

• Working Model (Mesh) with max linear force applied

• Patran Analysis

AutoDesk Progress

• Finalizing Fabrication Drawings

Sample Drawings

Assembly

Next Steps

• Review Drawings with Kevin• Calculations

Questions