Detection of internal fixation plate loosening by means of an analysis of vibratory responses

Bull, David; Nokes, Leonard Derek Martin; Frampton, Ralph E.

doi:10.1016/0141-5425(91)90114-m

Cited by 2 publications

(1 citation statement)

References 5 publications

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“…In a different line of research, the vibration properties of bones such as natural frequencies and natural modes are used for characterizing the orthotropic properties of long bones such as the femur (Taylor et al, 2002) and validating density-elasticity relationships used in finite element modeling of bones (Scholz et al, 2013). Another application of modal analysis of bones is detection of the loosening of fixation plates (Bull et al, 1991) and measuring/monitoring the structural features of the spine (Van Engelen et al, 2011. In all abovementioned applications, knowledge about the effects of anatomical variations on natural frequencies could be useful particularly to maximize the accuracy of the proposed technique through integration of patient-specific aspects.…”

Section: Introductionmentioning

confidence: 99%

Relationship between the shape and density distribution of the femur and its natural frequencies of vibration

Campoli

Baka

Kaptein

et al. 2014

Journal of Biomechanics

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Section: Introductionmentioning

confidence: 99%

Relationship between the shape and density distribution of the femur and its natural frequencies of vibration

Campoli

Baka

Kaptein

et al. 2014

Journal of Biomechanics

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Vibration-Based Healing Assessment of an Internally Fixated Femur

Chiu

Vien

Russ

et al. 2019

Journal of Nondestructive Evaluation, Diagnostics and Prognostics of Engineering Systems

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The current techniques in assessing the healing of a fixated fractured long bone, which include X-ray, computed tomography (CT), and manual manipulation, are qualitative and its accuracy depends on the surgeon's experience. A lack of a robust and quantitative monitoring method of fractured bone healing limits the survival of orthopedic implants and the ability to accurately predict and prevent fixation failure and complications. This paper experimentally and computationally investigates the efficacy and the potential application of a vibration-based quantitative monitoring methodology. This nonintrusive technique incorporates the cross-spectra response of externally placed sensors located remotely from the fractured region. In this study, the test specimens are composite femurs fixated with an intramedullary nail fixation system and the epoxy adhesive applied in the osteotomized region is used to simulate the healing process. Epoxies with a 30-min and 2 h gel time are used separately to investigate the sensitivity of this healing assessment technique. The findings highlight the key vibrational modes to establish the state of healing and the quantification evaluation of healing of fixated femurs based on a formulated healing index is also presented. This efficacy study seeks to verify the viability of this external measurement technique for human health monitoring and the future development of healing devices.

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Detection of internal fixation plate loosening by means of an analysis of vibratory responses

Cited by 2 publications

References 5 publications

Relationship between the shape and density distribution of the femur and its natural frequencies of vibration

Relationship between the shape and density distribution of the femur and its natural frequencies of vibration

Vibration-Based Healing Assessment of an Internally Fixated Femur

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