Navigated versus conventional drilling of the knee in a model of obesity

• Authors: Johannes Beckmann , Markus Tingart , Juergen Goetz , Sven Anders , Joachim Grifka , Franz Kock
• Languages of publication: EN

Abstracts

EN

Core decompression by exact drilling into ischemic lesions of the femoral condyle stays a challenging procedure, particularly in obese patients. The precision of fluoroscopically-based drilling compared to conventional drilling was evaluated in an in-vitro model for obesity. 40 sawbones were prepared mimicking osteonecrosis in obese patients. 20 sawbones were drilled by guidance of an intraoperative navigation system VectorVision® (BrainLAB, Munich, Germany); the other 20 sawbones were conventionally drilled by fluoroscopic control only. Regarding the distance to the desired mid-point of the lesion, a statistically significant difference with 0.55 mm in the navigated group and 1.19 mm in the control group could be stated (p<0.001). Significant differences were further found for the number of drilling corrections (p<0.001) and radiation time needed (p<0.001). Even in difficult circumstances as in obese patients, the drilling guided by the VectorVision®-navigation system shows high precision with simultaneous enormous reduction of radiation time.

Keywords

EN

CAOS; Navigation; Osteochondritis dissecans; Osteonecrosis; Core decompression; Obesity

• Publisher: De Gruyter Open
• Journal: Open Medicine
• Year: 2008
• Volume: 3
• Issue: 1
• Pages: 89-95

Dates

published

1 - 3 - 2008

online

1 - 3 - 2008

Contributors

author

Johannes Beckmann

• Orthopedic Clinic and Policlinic of the University of Regensburg, Germany

author

Markus Tingart

• Orthopedic Clinic and Policlinic of the University of Regensburg, Germany

author

Juergen Goetz

• Orthopedic Clinic and Policlinic of the University of Regensburg, Germany

author

Sven Anders

• Orthopedic Clinic and Policlinic of the University of Regensburg, Germany

author

Joachim Grifka

• Orthopedic Clinic and Policlinic of the University of Regensburg, Germany

author

Franz Kock

• Orthopedic Clinic and Policlinic of the University of Regensburg, Germany

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Identifiers

DOI

10.2478/s11536-007-0068-5