Novel bone surrogates for cranial surgery training

Hollensteiner, Marianne; Fürst, David; Esterer, Benjamin; Augat, Peter; Schrödl, Falk; Hunger, Stefan; Malek, Michael; Stephan, Daniel; Schrempf, Andreas

doi:10.1016/j.jmbbm.2017.04.021

Cited by 15 publications

(16 citation statements)

References 9 publications

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“…Mechanical testing in general revealed non-normal distributions for human milling results [ 28 ]. Further, Levene-test detected inhomogeneous variances for ASC drilling and SB sawing results.…”

Section: Resultsmentioning

confidence: 99%

“…The created skull caps had a height of approximately 7 cm and an elliptical base dimension of 16 × 13 cm. The materials used to create the ASC were described in detail in a former study [ 28 ] mainly consisting of PU resin, mineral fillers, cell stabilizers and water as blowing agent. A fixed amount of the liquid material mixture for the outer table was poured in the part of the silicone mold which represents the outer surface of the human skull cap.…”

Section: Methodsmentioning

confidence: 99%

“…According to the aforementioned graft lift procedure, the maximum insertion forces during drilling and milling of the outer table and during sawing of the diploe were identified as characteristic haptic parameters. The measurement procedure is described in detail elsewhere [ 28 ]. A custom made material test bench (see Fig.…”

Section: Methodsmentioning

confidence: 99%

“…To determine, if the ASC provided realistic machining haptics, they were compared to results on machining of human sample bones performed in an earlier study([ 28 ]): two human parietal bones were released from soft tissue, autoclaved and cut into proportions of 2 × 8 cm. Bone proportions of the temporal, occipital or frontal bone were omitted.…”

Section: Methodsmentioning

confidence: 99%

“…The aim of this study was to design a novel synthetic skull cap and to determine, if the skull cap would provide realistic machining haptics and bone structure compared to human parietal bone for tabula externa graft lift training. The artificial skull bone imitating the anatomical bone layers of inner and outer cortices as well as the diploe was made of a PU material mixture, which was already identified as suitable in a former study [ 28 ].…”

Section: Introductionmentioning

confidence: 99%

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Characterization of an artificial skull cap for cranio-maxillofacial surgery training

Hollensteiner¹,

Fürst²,

Augat

et al. 2018

J Mater Sci: Mater Med

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Cranial grafts are favored to reconstruct skeletal defects because of their reduced resorption and their histocompatibility. Training possibilities for novice surgeons include the “learning by doing” on the patient, specimens or simulators. Although the acceptance of simulators is growing, the major drawback is the lack of validated bone models. The aim of this study was to create and validate a realistic skull cap model and to show superiority compared to a commercially available skull model. Characteristic forces during machinery procedures were recorded and thickness parameters from the bony layers were obtained. The thickness values of the bone layers of the developed parietal bone were comparable to the human ones. Differences between drilling and sawing forces of human and artificial bones were not detected using statistical analysis. In contrast the parameters of the commercially available skull model were significantly different. However, as a result, a model-based simulator for tabula externa graft lift training, consisting of a brain, skull bone cap and covering soft tissues was created. This simulator enables the training of all procedural steps of a “split thickness graft lift”. In conclusion, an artificial skull cap suitable for parietal graft lift training was manufactured and validated against human parietal bones.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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