Percutaneous antegrade scaphoid screw Placement: a feasibility and accuracy analysis of a novel electromagnetic navigation technique versus a standard fluoroscopic method
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Percutaneous antegrade scaphoid screw Placement: a feasibility and accuracy analysis of a novel electromagnetic navigation technique versus a standard fluoroscopic method. / Hoffmann, M; Reinsch, O D; Petersen, J P; Schröder, M; Priemel, M; Spiro, A S; Rueger, J M; Yarar, S.
In: INT J MED ROBOT COMP, Vol. 11, No. 1, 01.03.2014, p. 52-57.Research output: SCORING: Contribution to journal › SCORING: Journal article › Research › peer-review
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TY - JOUR
T1 - Percutaneous antegrade scaphoid screw Placement: a feasibility and accuracy analysis of a novel electromagnetic navigation technique versus a standard fluoroscopic method
AU - Hoffmann, M
AU - Reinsch, O D
AU - Petersen, J P
AU - Schröder, M
AU - Priemel, M
AU - Spiro, A S
AU - Rueger, J M
AU - Yarar, S
N1 - Copyright © 2014 John Wiley & Sons, Ltd.
PY - 2014/3/1
Y1 - 2014/3/1
N2 - BACKGROUND: Central screw positioning in the scaphoid provides biomechanical advantages.METHODS: A prospective randomized study of six fluoroscopically guided and six electromagnetically navigated screw (ENS) placements was performed on human cadavers. Accuracy of screw position was determined. Intraoperative fluoroscopy exposure times, readjustments of drilling directions, complete restarts and complications were documented.RESULTS: The ENS method provided a mean time benefit of 7.34 min compared with the standard method and the mean screw length ratio (SLR coronar: ENS 0.96 ± 0.04 mm, SFF: 0.92 ± 0.04 mm, P = 0.065; SLR sagittal: ENS 0.98 ± 0.02 mm, SFF: 0.91 ± 0.04 mm, P = 0.009) and the screw axis deviation angle (AD coronar: ENS 3.33 ± 2.34°, SFF: 10.33 ± 2.58°, P = 0.002; AD sagittal: ENS 2.83 ± 0.98°, SFF: 11.00 ± 6.16°, P = 0.002) were lower. Using the electromagnetic navigation procedure no drilling readjustments or restarts were required, no cortical breach occurred.CONCLUSIONS: Compared with the standard fluoroscopic technique, the ENS method used in this study showed higher accuracy, less complications, required less operation and radiation exposure time. Copyright © 2014 John Wiley & Sons, Ltd.
AB - BACKGROUND: Central screw positioning in the scaphoid provides biomechanical advantages.METHODS: A prospective randomized study of six fluoroscopically guided and six electromagnetically navigated screw (ENS) placements was performed on human cadavers. Accuracy of screw position was determined. Intraoperative fluoroscopy exposure times, readjustments of drilling directions, complete restarts and complications were documented.RESULTS: The ENS method provided a mean time benefit of 7.34 min compared with the standard method and the mean screw length ratio (SLR coronar: ENS 0.96 ± 0.04 mm, SFF: 0.92 ± 0.04 mm, P = 0.065; SLR sagittal: ENS 0.98 ± 0.02 mm, SFF: 0.91 ± 0.04 mm, P = 0.009) and the screw axis deviation angle (AD coronar: ENS 3.33 ± 2.34°, SFF: 10.33 ± 2.58°, P = 0.002; AD sagittal: ENS 2.83 ± 0.98°, SFF: 11.00 ± 6.16°, P = 0.002) were lower. Using the electromagnetic navigation procedure no drilling readjustments or restarts were required, no cortical breach occurred.CONCLUSIONS: Compared with the standard fluoroscopic technique, the ENS method used in this study showed higher accuracy, less complications, required less operation and radiation exposure time. Copyright © 2014 John Wiley & Sons, Ltd.
U2 - 10.1002/rcs.1572
DO - 10.1002/rcs.1572
M3 - SCORING: Journal article
C2 - 24677600
VL - 11
SP - 52
EP - 57
JO - INT J MED ROBOT COMP
JF - INT J MED ROBOT COMP
SN - 1478-5951
IS - 1
ER -
