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Experimental and numerical analysis of augmented locking plate fixation repair for proximal humeral fractures Open Access


Other title
Locking plate fixation
Proximal humeral fractures
Fibular graft
Type of item
Degree grantor
University of Alberta
Author or creator
Begum, Farhana
Supervisor and department
Carey, Jason (Mechanical Engineering)
Adeeb, Samer (Civil & Environmental Engineering)
Examining committee member and department
Carey, Jason (Mechanical Engineering)
Raboud, Donald (Mechanical Engineering)
Bouliane, Martin (Division of Orthopaedic Surgery)
Adeeb, Samer (Civil & Environmental Engineering)
El-Rich, Marwan (Civil & Environmental Engineering)
Department of Civil and Environmental Engineering

Date accepted
Graduation date
Master of Science
Degree level
Failure of locking plate fixation due to varus collapse is a common problem for the elderly population who have osteoporotic bone with comminuted fractures. However, it is possible to increase the stability and the stiffness of the fixation system by using intramedullary fibular graft. This study compares the effectiveness of the augmented versus non-augmented locking plate fixation under clinically relevant cyclic loading. Nine pairs of cadaveric humeri were utilized with one side fixated using the augmented system and the other using the non-augmented one. Analysis of the results revealed that the augmented constructs can withstand at least three times the number of cycles to failure than the other one. In addition, finite element models were developed for the quasi-static loading conditions. The results of the models followed trends similar to the experimental results and revealed the locations of the stresses distribution within the constructs.
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