Precision of computer-assisted core decompression drilling of the knee

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

“…Despite emerging and spreading systems and use, only few studies exist [17][18][19][20]22,[25][26][27][28] that report clinically acceptable results in precision with a distance from the given target of below four millimeters [17][18][19]23,24,26,27]. However, the bending of a wire or the tip of a thin drill could falsify the measured distances from the target since just their length and their indirect orientation by positioning of the drilling guide are detected.…”

“…However, the bending of a wire or the tip of a thin drill could falsify the measured distances from the target since just their length and their indirect orientation by positioning of the drilling guide are detected. As mentioned above, the precision of core decompression with the VectorVision®-navigation system in an in-vitro model of osteonecrosis of the femoral condyle could be markedly improved with high reproducibility in hitting the target compared to conventional techniques [24]. Drilling can be performed by visualization of the aiming of the target on the navigation system-associated screen.…”

“…The methods differ in these studies and different navigation systems are used that cannot directly be compared and generalized. As described earlier, the precision of core decompression with the VectorVision®-navigation system (BrainLAB, Munich, Germany) in an in-vitro model of osteonecrosis of the femoral condyle could be clearly improved by simultaneous reduction of exposure time to radiation [24].…”

“…Different methods like the CT-based, fluoroscopically-assisted or imageless methods are used to simultaneously generate different planes of the therapeutic object to be treated [21]. Only few studies that describe clinically accepted results in precision exist, despite emerging and spreading systems and use [17][18][19][20][22][23][24][25]. The methods differ in these studies and different navigation systems are used that cannot directly be compared and generalized.…”

Navigating the fluoroscopeʼs C-arm back into position: an accurate and practicable solution to cut radiation and optimize intraoperative workflow

“…First, improve precision of instrument and implant placement, particularly in minimally invasive surgery. 3,4,21,22 Second, decrease radiation exposure by avoiding redundant imaging. 23 Nevertheless, even with instrument navigation, adequate reduction and correct implant placement are verified by fluoroscopic imaging.…”