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Journal of Bone and Joint Surgery - British Volume, Vol 89-B, Issue 3, 323-326.
doi: 10.1302/0301-620X.89B3.18424  
Copyright © 2007 by British Editorial Society of Bone and Joint Surgery
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Accuracy analysis of Iso-C3D versus fluoroscopy-based navigated retrograde drilling of osteochondral lesions

A PILOT STUDY

M. Citak, MD, Orthopaedic Surgeon1; D. Kendoff, MD, Orthopaedic Surgeon1; M. Kfuri, Jr, MD, Assistant Professor2; A. Pearle, MD, Orthopaedic Surgeon3; C. Krettek, FRACS, MD, Professor1; and T. Hüfner, MD, Professor Trauma Department1

1 Hannover Medical School, Carl-Neuberg-Strasse 1, D-30625, Hannover, Germany.
2 Department of Biomechanics, Medicine and Rehabilitation of Locomotor System, Ribeirão Preto Medical School, São Paulo University, Avenue, Bandeirantes 3900-11O. andar, 14049-900, Ribeirão Preto, São Paulo, Brazil.
3 Orthopaedic Department, Hospital for Special Surgery, 535 East 70th Street, New York, 10021, New York, USA.

Correspondence should be sent to Dr M. Citak; e-mail: citak.musa{at}mh-hannover.de

The aim of this pilot study was to evaluate the accuracy of two different methods of navigated retrograde drilling of talar lesions. Artificial osteochondral talar lesions were created in 14 cadaver lower limbs. Two methods of navigated drilling were evaluated by one examiner. Navigated Iso-C3D was used in seven cadavers and 2D fluoroscopy-based navigation in the remaining seven. Of 14 talar lesions, 12 were successfully targeted by navigated drilling. In both cases of inaccurate targeting the 2D fluoroscopy-based navigation was used, missing lesions by 3 mm and 5 mm, respectively. The mean radiation time was increased using Iso-C3D navigation (23 s; 22 to 24) compared with 2D fluoroscopy-based navigation (14 s, 11 to 17).






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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General