Impacted bone stiffness measured during construction of morsellised bone samples

Fosse, Lars; Rønningen, Helge; Lund-Larsen, J.; Benum, Pål; Grande, L.

doi:10.1016/j.jbiomech.2004.01.022

Cited by 23 publications

(60 citation statements)

References 19 publications

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“…Using our standard impaction procedure (Fosse et al 2004), we constructed seven bone pellets from a portion of unmodified morsellized bone.…”

Section: Methodsmentioning

confidence: 99%

“…More bone was added, and the standard impaction procedure repeated until the bone chamber was full. Bone impacted in an impaction chamber was defined as a bone pellet (Fosse et al 2004). …”

Section: Impaction Techniquementioning

confidence: 99%

“…The construction of a bone pellet was thus followed stroke-by-stroke and layer-by-layer. The fifth measurement in the fourth layer was chosen to represent the pellet as a whole, and it was defined as the impact constrained module of elasticity (ICME) (Fosse et al 2004).…”

Section: Measurements On Impacted Bone Pelletsmentioning

confidence: 99%

“…The bone pellets were prepared and tested in a load testing machine (Lloyd LR 10K with load cell DCL 2.5 kN, Lloyd instruments Ltd., Hants, England) to obtain the load-deformation characteristics of the pellet (Fosse et al 2004). Incremental load-steps were used to obtain a gradual dissipation of excess pore pressures during the load step.…”

Section: Measurements On Impacted Bone Pelletsmentioning

confidence: 99%

“…Early axial subsidence and torsion may disturb the geometry of the implant system and hence reduce the durability of the revised prosthesis (Franzén et al 1995, Eldridge et al 1997, Brodt et al 1998, Ornstein et al 2002. Various factors influence the mechanical stability of impacted bone: particle size and grading (Brewster et al 1999, Ullmark 2000, moisture (Voor et al 2000, Dunlop et al 2003, addition of bone substitutes (Verdonschot et al 2001), and impaction energy (Ullmark 2000, Fosse et al 2004. Despite extensive application, the significance and function of several of these factors is obscure.…”

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confidence: 99%

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Influence of water and fat content on compressive stiffness properties of impacted morsellized bone: An experimental ex vivo study on bone pellets

Fosse¹,

Rønningen²,

Benum³

et al. 2006

Acta Orthopaedica

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“…Using our standard impaction procedure (Fosse et al 2004), we constructed seven bone pellets from a portion of unmodified morsellized bone.…”

Section: Methodsmentioning

confidence: 99%

“…More bone was added, and the standard impaction procedure repeated until the bone chamber was full. Bone impacted in an impaction chamber was defined as a bone pellet (Fosse et al 2004). …”

Section: Impaction Techniquementioning

confidence: 99%

Section: Measurements On Impacted Bone Pelletsmentioning

confidence: 99%

Section: Measurements On Impacted Bone Pelletsmentioning

confidence: 99%

mentioning

confidence: 99%

See 3 more Smart Citations

Influence of water and fat content on compressive stiffness properties of impacted morsellized bone: An experimental ex vivo study on bone pellets

Fosse¹,

Rønningen²,

Benum³

et al. 2006

Acta Orthopaedica

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Factors affecting stiffness properties in impacted morsellized bone used in revision hip surgery: An experimental in vitro study

Fosse

Rønningen

Benum

et al. 2006

J Biomedical Materials Res

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When revising loosened joint prosthesis, impacted morsellized bone is frequently used as organic scaffolding. We studied the relative influence that different bone particle size, impaction energy, and liquid content had on impacted bone stiffness. Bovine bone was morsellized in a bone mill by three grinding drums to produce bone with different chip size distribution. Next, portions of bone chips of controlled sizes were produced by a five-leveled sieve. Layer by layer of bone are constructed into pellets by our experimental impaction method. This method allows us to vary one independent factor at a time in a controlled manner while keeping the other factors constant. Stiffness for all bone pellets were measured during impaction and loading. In earlier studies, we focused on how impaction force, number of impaction strokes, and bone liquid contents influence mechanical behavior. Here, we compare the outcome of all studies using general linear models. All five factors significantly contribute to stiffness of impacted morsellized bone. Changing bone moisture has major, while increasing the number of impaction strokes beyond five per layer has minor effect. Low water content is the main contributor to highest load stiffness. Optimal stability of impacted morsellized bone is achieved with dried and well-graded particles. The number of heavy impaction strokes can be restricted.

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Biomechanical analysis of a synthetic, biodegradable impaction graft substitute

Lutton

Wheatley

Wilson

et al. 2010

J Biomedical Materials Res

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Impaction bone grafting in revision arthroplasty is a common and successful procedure to restore primary bone stock. Reducing the amount of bone needed to fill large grafts has been a driving force for the use of synthetic materials that can act as extenders or substitutes. To this end, we evaluated the mechanical properties of a new class of biodegradable polymer beads with and without donor bone to determine its suitability for use in impaction grafting. Biodegradable methacrylated anhydride beads were synthesized using thermal polymerization techniques. The mechanical properties of the beads were then tested in an impaction grafting test chamber and compared with morsellised porcine allograft. The beads, porcine allograft and a 50/50 combination all had similar mechanical properties, both in compression and relaxation. Pure polymer beads compacted significantly less than pure allograft and retained macroporosity after impaction. Our results suggest that the biodegradable beads have sufficient mechanical properties to be considered as an impaction grafting substitute or extender. Their ability to fill space whilst retaining macroporosity may be advantageous for tissue ingrowth and remodeling.

show abstract

Impacted bone stiffness measured during construction of morsellised bone samples

Cited by 23 publications

References 19 publications

Influence of water and fat content on compressive stiffness properties of impacted morsellized bone: An experimental ex vivo study on bone pellets

Influence of water and fat content on compressive stiffness properties of impacted morsellized bone: An experimental ex vivo study on bone pellets

Factors affecting stiffness properties in impacted morsellized bone used in revision hip surgery: An experimental in vitro study

Biomechanical analysis of a synthetic, biodegradable impaction graft substitute

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