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Femoral Fracture Risk Assessment Following Double-Bundle ACL Reconstruction

O'Farrell, Madelyn Egan (2008) Femoral Fracture Risk Assessment Following Double-Bundle ACL Reconstruction. Master's Thesis, University of Pittsburgh. (Unpublished)

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The anterior cruciate ligament (ACL) is the major ligament in the knee and is often torn during athletic competition as well as every day activity. The ACL is made up of two functional bundles, which help to stabilize the knee. Until recently, ACL reconstruction only replaced one of these bundles; however, research shows that both bundles are needed to more fully restore normal knee anatomy. In order to replace both bundles, two tunnels must be drilled in the femur bone. With the drilling of two tunnels there are a few concerns, one of which is femur fracture. This study uses computational models as well as experimental testing to explore the different bone stresses in the femur caused by tunnel drilling during ACL reconstruction. Through the use of medical imaging and finite element analysis software, a computational model was developed having actual geometry and material properties of the human femur. The computational analysis was used to investigate the effect of the addition of a second tunnel, variations of tunnel placement, and tunnel diameter size on bone stress. Experimental data was gathered by attaching strain gage rosettes to human cadaver femurs and calculating the resulting principle strains. The results of both the experimental testing and computational analysis were compared and no significant difference was found between the two.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
O'Farrell, Madelyn Eganmae7@pitt.eduMAE7
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee MemberMiller, Mark Cmcmllr@engr.pitt.eduMCMLLR
Committee MemberSmolinski, Partrick Jsmolinsk@engr.pitt.eduPATSMOL
Committee MemberSluaghter, William Swss@engr.pitt.eduWSS
Date: 30 January 2008
Date Type: Completion
Defense Date: 12 November 2007
Approval Date: 30 January 2008
Submission Date: 5 November 2007
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Institution: University of Pittsburgh
Schools and Programs: Swanson School of Engineering > Mechanical Engineering
Degree: MSME - Master of Science in Mechanical Engineering
Thesis Type: Master's Thesis
Refereed: Yes
Uncontrolled Keywords: ACL surgical technique; cortical bone
Other ID:, etd-11052007-132302
Date Deposited: 10 Nov 2011 20:04
Last Modified: 15 Nov 2016 13:51


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