Biomechanical Study of Sternal Closure Using Rigid Fixation Techniques in Human Cadavers Wayne Ozaki, MD, Steven R Buchman, MD, Mark D Iannettoni, MD,

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Presentation transcript:

Biomechanical Study of Sternal Closure Using Rigid Fixation Techniques in Human Cadavers Wayne Ozaki, MD, Steven R Buchman, MD, Mark D Iannettoni, MD, Elizabeth P Frankenburg, BS The Annals of Thoracic Surgery Volume 65, Issue 6, Pages 1660-1665 (June 1998) DOI: 10.1016/S0003-4975(98)00231-8

Fig 1 (A) 2.3-mm, four-hole titanium alloy straight plate (KLS-Martin L.P., Jacksonville, FL). (B) Customized 2.3-mm, four-hole titanium alloy H (KLS-Martin L.P., Jacksonville, FL). The Annals of Thoracic Surgery 1998 65, 1660-1665DOI: (10.1016/S0003-4975(98)00231-8)

Fig 2 Potted sternum undergoing compression by the uniaxial servohydraulic testing machine (MTS model 810, Minneapolis, MN). The strain gauge is beneath the sternum. The Annals of Thoracic Surgery 1998 65, 1660-1665DOI: (10.1016/S0003-4975(98)00231-8)

Fig 3 Phase I: four-hole straight plate versus wire fixation. Lateral displacement is measured in millimeters, stiffness is measured in millimeter−1, and failures are calculated from a total of seven plates. The Annals of Thoracic Surgery 1998 65, 1660-1665DOI: (10.1016/S0003-4975(98)00231-8)

Fig 4 Failed four-hole titanium alloy straight plate sternal testing. Wide sternal separation seen. The Annals of Thoracic Surgery 1998 65, 1660-1665DOI: (10.1016/S0003-4975(98)00231-8)

Fig 5 Failed wired sternal testing. Wires seem to be pulling through the sternum. The Annals of Thoracic Surgery 1998 65, 1660-1665DOI: (10.1016/S0003-4975(98)00231-8)

Fig 6 Successful custom four-holed H plate sternal testing. The Annals of Thoracic Surgery 1998 65, 1660-1665DOI: (10.1016/S0003-4975(98)00231-8)

Fig 7 Phase II: four-hole straight plate versus wire fixation. Lateral displacement is measured in millimeters, stiffness is measured in millimeters−1, and failures are calculated from a total of eleven plates. The Annals of Thoracic Surgery 1998 65, 1660-1665DOI: (10.1016/S0003-4975(98)00231-8)