Ultrasonic Study of Normal and Fractured Bone

Gerlanc, M; Haddad, Denise Sabbagh; Gw, Hyatt; Jt, Langloh; P, St Hilaire

doi:10.1097/00003086-197509000-00025

Cited by 72 publications

(38 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Changes in both ultrasound velocity and attenuation across a healing fracture have been used to quantify fracture healing [11,19,20,28,36]. Of these two modalities of measurement (velocity and attenuation), it has been demonstrated that attenuation is by far the more sensitive to the presence of a fracture which results in a large loss in signal amplitude [14].…”

Section: Other Methods To Measure the Changes In Callus Stiffnessmentioning

confidence: 99%

Monitoring the Mechanical Properties of Healing Bone

Claes

Cunningham

2009

Clinical Orthopaedics &Amp; Related Research

130

109

View full text Add to dashboard Cite

Fracture healing is normally assessed through an interpretation of radiographs, clinical evaluation, including pain on weight bearing, and a manual assessment of the mobility of the fracture. These assessments are subjective and their accuracy in determining when a fracture has healed has been questioned. Viewed in mechanical terms, fracture healing represents a steady increase in strength and stiffness of a broken bone and it is only when these values are sufficiently high to support unrestricted weight bearing that a fracture can be said to be healed. Information on the rate of increase of the mechanical properties of a healing bone is therefore valuable in determining both the rate at which a fracture will heal and in helping to define an objective and measurable endpoint of healing. A number of techniques have been developed to quantify bone healing in mechanical terms and these are described and discussed in detail. Clinical studies, in which measurements of fracture stiffness have been used to identify a quantifiable end point of healing, compare different treatment methods, predictably determine whether a fracture will heal, and identify factors which most influence healing, are reviewed and discussed.

show abstract

Section: Other Methods To Measure the Changes In Callus Stiffnessmentioning

confidence: 99%

Monitoring the Mechanical Properties of Healing Bone

Claes

Cunningham

2009

Clinical Orthopaedics &Amp; Related Research

130

109

View full text Add to dashboard Cite

show abstract

“…In particular, cases of fracture and deformation of the elongated callus after removal of an external fixator in limb lengthening have been reported [19,22]. Therefore, investigators have tried to monitor mechanical strength during fracture healing using strain gauges [2,11,18] PII: S 0 7 3 6 -0 2 6 6 ( 0 0 ) 0 0 0 4 2 -5 sorptiometry [1, 3,8,15], ultrasonic examination [7,12,13], indentation testing [ 14,151, and impulse vibration analysis [17].…”

Section: Introductionmentioning

confidence: 99%

Prediction of mechanical properties of healing fractures using acoustic emission

Watanabe

Takai

Arai

et al. 2001

Journal Orthopaedic Research

View full text Add to dashboard Cite

The objective of this study was to develop a non-destructive method for monitoring fracture healing with acoustic emission (AE). Experimentally produced fractures of the rat femur were tested in tension and in torsion at 4,6,8 and 12 weeks after fracture. AE signals were monitored during these mechanical tests. The values for load and torque at the initiation of the AE signal were defined as new mechanical parameters. The apparent density and ash density of the fracture site were also measured at each time period. Tensile strength, tensile stiffness, maximum torque and torsional stiffness of the fracture site increased with time. The AE signal was detected before complete specimen failure. Load and torque for initiation of AE increased proportionally with increasing mechanical properties. The mineral density, however, reached a plateau at 8 weeks, when callus mechanical strength was approximately 50% of control. Load for initiation of AE was strongly correlated with the strength (I = 0.98), stiffness (I = 0.88). and failure strain ( Y = -0.63) of the callus. Torque for initiation of AE was highly correlated with the maximum torque (I = 0.95) and torsional stiffness (I = 0.93) of the callus. The findings of the present study indicated that some mechanical properties of healing fractures could be estimated by monitoring AE signals.

show abstract

“…Osteotomy procedure was performed on the right tibia in all cases, but both tibiae were used in the ultrasonometric analysis, because of the need to compare operated side to the healthy one. The comparison with the contralateral healthy limb co-validates the methodology because it presents safer and accurate results (8,9,10,11,12) . The shortcoming regarding the use of sheep is the poor availability of those animals, which must be found in slaughterhouses at a relatively high cost by animal, which makes the use of such animals to be expensive and difficult, also due to lodging limitations.…”

Section: Discussionmentioning

confidence: 57%

“…Gerlanc et al (9) , in a study conducted in human fractured tibiae, in which the normal osseous healing has been analyzed, showed that USPV initially decreases, followed by a gradual increase, achieving up to 95% of the normal value (contralateral bone), after 12 months following fracture. The authors concluded that the USPV measurement can be clinically used as a tool to monitor osseous healing.…”

Section: * Soundscan 2000mentioning

confidence: 99%

“…The authors concluded that the USPV measurement can be clinically used as a tool to monitor osseous healing. In both researches, the technique used was the US transmission over cortical surface, in which transducers (emission and reception) are perpendicularly positioned on the tibia (in vivo), parallel-oriented from each other and separated by a pre-determined distance (8,9) .…”

Section: * Soundscan 2000mentioning

confidence: 99%

See 1 more Smart Citation

Avaliação ultra-sonométrica da consolidação de osteotomias mediodiafisárias transversas em diferentes períodos: estudo experimental em tíbias de carneiro

Barbieri

Matos

et al. 2005

Acta ortop. bras.

View full text Add to dashboard Cite

Foi realizado um estudo experimental sobre a avaliação ultra-sonométrica da consolidação de tíbias de carneiros submetidas a osteotomia transversal mediodiafisária, utilizando 15 carneiros, com pêso médio de 37 Kg, divididos em três grupos experimentais de cinco animais cada, conforme o período de observação pós-operatória de 30, 45 e 60 dias. As osteotomias foram realizadas nas tíbias direitas dos animais, ficando as tíbias esquerdas como controle. Foi feita avaliação radiográfica da consolidação a cada duas semanas e, ao fim do período de observação, os animais foram sacrificados e as tíbias, removidas para a análise ultra-sonométrica. Foram medidos e correlacionados o diâmetro da tíbia e a velocidade de propagação transversal do ultra-som na região da osteotomia, em duas direções diferentes (perpendicular e paralela ao plano da tuberosidade anterior da tíbia). A velocidade de propagação do ultra-som aumentou com o avançar da consolidação (±5%), sendo as diferenças significantes em relação ao grupo-controle, mas não entre os grupo experimentais. Os diâmetros diminuíram nas duas direções medidas, sendo as diferenças significantes entre os grupos, com forte correlação negativa com a velocidade. Concluiu-se que o método de avaliação da consolidação pela ultra-sonometria é factível, com resultados confiáveis e precisos.

show abstract

Ultrasonic Study of Normal and Fractured Bone

Cited by 72 publications

References 0 publications

Monitoring the Mechanical Properties of Healing Bone

Monitoring the Mechanical Properties of Healing Bone

Prediction of mechanical properties of healing fractures using acoustic emission

Avaliação ultra-sonométrica da consolidação de osteotomias mediodiafisárias transversas em diferentes períodos: estudo experimental em tíbias de carneiro

Contact Info

Product

Resources

About