Response of human femur to mechanical vibration

Thomas, A.; Luo, Dan; Dunn, J W

doi:10.1016/0141-5425(91)90045-9

Cited by 14 publications

(4 citation statements)

References 3 publications

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“…The technique will be based on the vibration response of the fixated femur. The vibration response of human femur is akin to the transverse vibration of an engineering beam-like structure [13]. The utilisation of the vibration response for determining the fracture healing was reported by Flint et al [14], who found that fracture healing can be assessed using a response ratio from the transverse vibration response of the femur.…”

Section: Introductionmentioning

confidence: 98%

Integrating sensing elements on external fixators for healing assessment of fractured femur

Ong

Chiu

Russ

et al. 2016

Struct. Control Health Monit.

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SUMMARYThis paper highlights the potential of integrating SHM concepts into an external fixator with the aim of using it to assess the healing of a fractured femur. A finite element analysis was first performed on the fixated femur to understand the response of the fixated femur in its fractured and healed state. The underlying mechanics will be used to establish a suitable monitoring strategy for assessment of healing. The results will be supported by a series of experiments using a fixated saw-bone femur, which has been cut to simulate fracture. The cut was filled with epoxy, and the curing of this epoxy was used to simulate healing of the fractured region. The findings lead to an actuation and sensing protocol able to determine the state of union of a fixated long bone. This methodology was tested further by using modelling clay to approximate the mass added by soft tissue surrounding the bone. These results illustrate that the integration of SHM and orthopaedic concepts can provide a quantitative measure that can be used in conjunction with existing techniques for the monitoring of the state of healing of the fracture. This represents a significant potential of reducing or eliminating the qualitative healing assessment.

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Section: Introductionmentioning

confidence: 98%

Integrating sensing elements on external fixators for healing assessment of fractured femur

Ong

Chiu

Russ

et al. 2016

Struct. Control Health Monit.

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“…Both are true for the femur in-vivo. The non-linearity can be concluded from the observation of Thomas [13] which says that the eigenfrequency depends on the longitudinal loading of the bone. The high damping of imbedded bones is documented by several publications, see Bediz et al [19], Van der Perre et al [20] and Tsuchikane et al [21].…”

Section: Discussionmentioning

confidence: 99%

“…Lappi et al [12] determined some physical properties of the femur based on vibration measurements. Thomas et al [13] observed in 1990 that the femurs eigenfrequencies depend on the amount of axial preload. Khalil et al [14] performed vibration measurements on the embalmed human femur in order to document its vibrational characteristics.…”

Section: Introductionmentioning

confidence: 99%

Pilot study on the Non-Invasive Detectability of Femoral Neck Fractures with Frequency Response Functions

Witteveen¹,

Wagner²,

Jachs³

et al. 2014

WJM

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A suspicion of a femoral neck fracture is a frequently recurring situation, especially in nursing homes. For the clarification of such a suspicion normally imaging techniques are used. Such equipment is expensive and therefore is located in hospitals. In addition to the costs, a transport causes stress for the patient. This pilot study is devoted to the question whether the detection of a femoral neck fracture with vibration measurements is possible in principal. In such a case, the clarification could be done on-site by an ordinary person using much cheaper equipment. This would reduce the stress for the patient and save money. For this purpose vibration measurements on a dead body with intact, with partially fractured and with complete cut femoral neck have been performed. Two different methods for the vibration initiation have been investigated, the so called impact testing and the shaker testing. The frequency response function has been determined for all combinations on both sides of the body. It turned out that there is a clear difference in the frequency response functions of the fractured bone with respect to the intact bone when shaker testing is used. This indicates that the method could have the potential to be a cost-saving alternative to imaging techniques. However, in a next step a statistically reliable clinical survey on living persons needs to be done.

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“…Jurist [2,3] was among the first investigators to present a theoretical basis and a measurement method for determining the resonance frequency of the ulna in vivo. Bending modes have been identified for long bones (e.g., ulna, tibia, femur) and the resonance frequencies have been related to bending or torsional stiffness using a simple beam model [2][3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Application of Non-Linear Elastic Wave Spectroscopy (NEWS) to In Vitro Damage Assessment in Cortical Bone

Müller¹,

Ulrich²,

Talmant³

et al.

Biomedical Applications of Vibration and Acoustics in Imaging and Characterizations

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This chapter reviews recent experimental findings applying non-linear dynamical techniques, termed non-linear elastic wave spectroscopy (NEWS), to infer progressive mechanical damage in human bone, in vitro. Standard measures of bone mechanical properties are compared where possible, including the quasi-statically derived stiffness and hysteresis. The goal is to explore whether or not the methods can ultimately be applied in vivo, for applications such as diagnosing and monitoring the progression of osteoporosis, as well as bone healing. It is shown that the NEWS methods are extremely sensitive to progressive damage, far more so than the other methods applied. The results are promising, and current discussion involves how to conduct similar experiments in vivo.

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Response of human femur to mechanical vibration

Cited by 14 publications

References 3 publications

Integrating sensing elements on external fixators for healing assessment of fractured femur

Integrating sensing elements on external fixators for healing assessment of fractured femur

Pilot study on the Non-Invasive Detectability of Femoral Neck Fractures with Frequency Response Functions

Application of Non-Linear Elastic Wave Spectroscopy (NEWS) to In Vitro Damage Assessment in Cortical Bone

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