TY - GEN
T1 - The 'augmented' circles
T2 - 5th International Conference on Information Processing in Computer-Assisted Interventions, IPCAI 2014
AU - Londei, Roberto
AU - Esposito, Marco
AU - Diotte, Benoit
AU - Weidert, Simon
AU - Euler, Ekkehard
AU - Thaller, Peter
AU - Navab, Nassir
AU - Fallavollita, Pascal
PY - 2014
Y1 - 2014
N2 - Intramedullary nailing is the surgical procedure mostly used in fracture reduction of the tibial and femoral shafts. Following successful insertion of the nail into the medullary canal, it must be fixed by inserting screws through its proximal and distal locking holes. Prior to distal locking of the nail, surgeons must position the C-arm device and patient leg in such a way that the nail holes appear as circles in the X-ray image. This is considered a 'trial and error' process, is time consuming and requires many X-ray shots. We propose an augmented reality application that visually depicts to the surgeon two 'augmented' circles, their centers lying on the axis of the nail hole, making it visible in space. After an initial X-ray image acquisition, real-time video guidance allows the surgeon to superimpose the 'augmented' circles by moving the patient leg; the result being nail holes appearing as circles. Our nail pose recovery was evaluated on 1000 random trials and we consistently recovered the nail angulation within 2.76 ± 1.66°. Lastly, in a preclinical experiment involving 7 clinicians, we demonstrated that in over 95% of the trials, the nail hole appeared as a circle using an initial X-ray image.
AB - Intramedullary nailing is the surgical procedure mostly used in fracture reduction of the tibial and femoral shafts. Following successful insertion of the nail into the medullary canal, it must be fixed by inserting screws through its proximal and distal locking holes. Prior to distal locking of the nail, surgeons must position the C-arm device and patient leg in such a way that the nail holes appear as circles in the X-ray image. This is considered a 'trial and error' process, is time consuming and requires many X-ray shots. We propose an augmented reality application that visually depicts to the surgeon two 'augmented' circles, their centers lying on the axis of the nail hole, making it visible in space. After an initial X-ray image acquisition, real-time video guidance allows the surgeon to superimpose the 'augmented' circles by moving the patient leg; the result being nail holes appearing as circles. Our nail pose recovery was evaluated on 1000 random trials and we consistently recovered the nail angulation within 2.76 ± 1.66°. Lastly, in a preclinical experiment involving 7 clinicians, we demonstrated that in over 95% of the trials, the nail hole appeared as a circle using an initial X-ray image.
KW - down-the-beam positioning
KW - freehand distal locking
KW - interlocking of intramedullary nailing
KW - medical augmented reality
KW - orthopedic and trauma surgery
KW - visualization
UR - http://www.scopus.com/inward/record.url?scp=84958535931&partnerID=8YFLogxK
U2 - 10.1007/978-3-319-07521-1_11
DO - 10.1007/978-3-319-07521-1_11
M3 - Conference contribution
AN - SCOPUS:84958535931
SN - 9783319075204
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 100
EP - 107
BT - Information Processing in Computer-Assisted Interventions - 5th International Conference, IPCAI 2014, Proceedings
PB - Springer Verlag
Y2 - 28 June 2014 through 28 June 2014
ER -