Computer-aided navigation in secondary reconstruction of post-traumatic deformities of the zygoma

Marmulla, Rüdiger; Niederdellmann, H

doi:10.1016/s1010-5182(98)80038-3

Cited by 26 publications

(15 citation statements)

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“…Planning based on these models is not transferable to the operating room in practice. Current computer-based three-dimensional CT datasets have opened the door to surgical navigation (Hassfeld and Muhling, 2000;Yeshwant et al, 2005a;Yeshwant et al, 2005b;Ritter et al, 2006;Luebbers et al, 2008), which does make planning transferrable to the operating room (Marmulla and Niederdellmann, 1998;Marmulla, 1999). This method is already widely used in craniomaxillofacial surgery (Hassfeld and Muhling, 2000;Gellrich et al, 2002;Schmelzeisen et al, 2002;Marmulla et al, 2004c;Schmelzeisen et al, 2004;HohlwegMajert et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Point-to-point registration with mandibulo-maxillary splint in open and closed jaw position. Evaluation of registration accuracy for computer-aided surgery of the mandible

Bettschart

Kruse

Matthews

et al. 2012

Journal of Cranio-Maxillofacial Surgery

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INTRODUCTION:Computer navigation plays an increasingly important role in craniomaxillofacial surgery. The difficulties in computer navigation at the craniomaxillofacial site lie in the accurate transmission of the dataset to the operating room. This study investigates the accuracy of the dental-splint registration method for the skull, midface, and mandible. MATERIAL AND METHODS: A synthetic human skull model was prepared with landmarks and scanned with cone beam computer tomography (CBCT). Two registration splints fixed the mandible against the viscerocranium in two different positions (closed vs. open). The target registration error was computed in all 278 landmarks spread over the entire skull and mandible in 10 repeated measurements using the VectorVision(2) (Brain-LAB Inc., Feldkirchen, Germany) navigation system. RESULTS: If registered in the closed position an average precision of 2.07mm with a standard deviation (SD) of 0.78mm was computed for all landmarks distributed over the whole skull. Registration in the open position resulted in an average precision of 1.53mm (SD=0.55mm). For single landmarks the precision decreases linearly with distance from the reference markers. The longer the three-dimensional distance between the registration points, the more precise the computer navigation is, mainly in the most posterior area of the cranium. CONCLUSION: Our findings in the cranium are comparable with those of other studies. Artificial fixation of the lower jaw via splint seems to introduce no additional error. The registration points should be as far apart from each other as possible during navigation with the splint.

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Section: Introductionmentioning

confidence: 99%

Point-to-point registration with mandibulo-maxillary splint in open and closed jaw position. Evaluation of registration accuracy for computer-aided surgery of the mandible

Bettschart

Kruse

Matthews

et al. 2012

Journal of Cranio-Maxillofacial Surgery

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“…Most of the appliances and studies focus on the mid-face region, especially the orbit with its complex anatomy (Watzinger et al, 1997;Marmulla and Niederdellmann, 1998;Gellrich et al, 2002;Schmelzeisen et al, 2004;Feichtinger et al, 2007;Kokemueller et al, 2008). Even the fronto-orbital and skull base regions have been addressed (Hassfeld et al, 1998;Schmelzeisen et al, 2002;Fei et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Registration for computer-navigated surgery in edentulous patients: A problem-based decision concept

Lübbers

Matthews

Zemann

et al. 2011

Journal of Cranio-Maxillofacial Surgery

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BACKGROUND: Surgical navigation is a commonly used tool in cranio-maxillofacial surgery. Registration is the key element for precision, and a number of studies have shown different techniques to be accurate. Nonetheless, uncertainty surrounds the special situation in edentulous patients and a practical approach to what can be a challenging problem. MATERIALS AND METHODS: Four registration strategies for the Brainlab VectorVision(2) system are presented for surgical navigation of edentulous patients: three landmark-based, point-to-point techniques and one surface-based matching strategy are evaluated. RESULTS: The methods described differ in overall accuracy as well as in the region covered. In general, the more time-consuming and invasive the technique, the more precise it is. The non-invasive techniques are less precise, and they cover only small regions with sufficient accuracy. CONCLUSIONS: Taking into account which type of accuracy is clinically relevant and that the whole skull does not always need to be covered with the greatest possible accuracy, all the described techniques have their indications. The simpler and less invasive techniques can spare time, decrease costs, and harm patient. A decision tree is presented to the reader.

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“…In particular, the application of navigation-aided procedures for orbital reconstruction has proved to be essential [20]. The development of powerful commodity computers has made it possible to increase the amount of CT/CBT/MRT information that can Right Approximate tetrahedral representation of the skin be used, leading to more accurate virtual hard or soft tissue images and models [21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous cutting of coupled tetrahedral and triangulated meshes and its application in orbital reconstruction

et al. 2009

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Computer-aided navigation in secondary reconstruction of post-traumatic deformities of the zygoma

Cited by 26 publications

References 1 publication

Point-to-point registration with mandibulo-maxillary splint in open and closed jaw position. Evaluation of registration accuracy for computer-aided surgery of the mandible

Point-to-point registration with mandibulo-maxillary splint in open and closed jaw position. Evaluation of registration accuracy for computer-aided surgery of the mandible

Registration for computer-navigated surgery in edentulous patients: A problem-based decision concept

Simultaneous cutting of coupled tetrahedral and triangulated meshes and its application in orbital reconstruction

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