�ber die Nichtoxydierbarkeit von Fe2+-Ionen in w��riger L�sung mit Luftsauerstoff

Krause, Alfons

doi:10.1007/bf00909487

Cited by 2 publications

(3 citation statements)

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“…Recent designs of surgical blades include a gap in the geometry to facilitate the removal of chips as they are formed and might reduce heat generation. The cutting feed-rate has also been identified as an important factor in heat generation [3,4]. Furthermore, the volume of bone that experiences thermal damage is directly proportional to the duration of exposure above the threshold temperature of 47 °C [6][7][8][9]26] and is dictated by the surface area in contact with the cutting tool and the distance from the surgically cut surface.…”

Section: Introductionmentioning

confidence: 99%

“…Temperature elevations during surgical cutting are difficult to avoid and are dependent on a number of factors, including speed, geometry of the blade, force applied, depth of cut, and irrigation technique [1][2][3][4]. Severe temperature elevations lead to thermal necrosis and apoptosis of the bone cells, osteocytes and osteoblasts, along with the bone marrow, surrounding soft tissue, and other cells that are crucial for postoperative recovery [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

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How Bone Tissue and Cells Experience Elevated Temperatures During Orthopaedic Cutting: An Experimental and Computational Investigation

Duffy

Vaughan

Niebur

et al. 2014

Journal of Biomechanical Engineering

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During orthopaedic surgery elevated temperatures due to cutting can result in bone injury, contributing to implant failure or delayed healing. However, how resulting temperatures are experienced throughout bone tissue and cells is unknown. This study uses a combination of experiments (forward-looking infrared (FLIR)) and multiscale computational models to predict thermal elevations in bone tissue and cells. Using multiple regression analysis, analytical expressions are derived allowing a priori prediction of temperature distribution throughout bone with respect to blade geometry, feed-rate, distance from surface, and cooling time. This study offers an insight into bone thermal behavior, informing innovative cutting techniques that reduce cellular thermal damage.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

How Bone Tissue and Cells Experience Elevated Temperatures During Orthopaedic Cutting: An Experimental and Computational Investigation

Duffy

Vaughan

Niebur

et al. 2014

Journal of Biomechanical Engineering

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“…Heat transferred into the freshly cut surface can result in increased temperatures that lead to the death of bone cells, a condition commonly referred to as necrosis [40][41][42][43]. An improvement over current haptic feedback devices would be a system that incorporates a thermomechanical model of bone sawing.…”

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confidence: 99%

Rounded Cutting Edge Model for the Prediction of Bone Sawing Forces

James

Pearlman

Saigal

2012

Journal of Biomechanical Engineering

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A new analytical model to predict bone sawing forces is presented. Development of the model was based on the concept of a single tooth sawing at a depth of cut less than the cutting edge radius. A variable friction model was incorporated as well as elastic Hertzian contact stress to determine a lower bound for the integration limits. A new high speed linear apparatus was developed to simulate cutting edge speeds encountered with sagittal and reciprocating bone saws. Orthogonal cutting experiments in bovine cortical bone were conducted for comparison to the model. A design of the experiment's approach was utilized with linear cutting speeds between 2600 and 6200 mm/s for depths of cut between 2.5 and 10 μm. Resultant forces from the design of experiments were in the range of 8 to 11 N, with higher forces at greater depths of cut. Model predictions for resultant force magnitude were generally within one standard deviation of the measured force. However, the model consistently predicted a thrust to cutting force ratio that was greater than measured. Consequently, resultant force angles predicted by the model were generally 20 deg higher than calculated from experimental thrust and cutting force measurements.

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�ber die Nichtoxydierbarkeit von Fe2+-Ionen in w��riger L�sung mit Luftsauerstoff

Cited by 2 publications

References 0 publications

How Bone Tissue and Cells Experience Elevated Temperatures During Orthopaedic Cutting: An Experimental and Computational Investigation

How Bone Tissue and Cells Experience Elevated Temperatures During Orthopaedic Cutting: An Experimental and Computational Investigation

Rounded Cutting Edge Model for the Prediction of Bone Sawing Forces

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