E W K Ng

The Chinese University of Hong Kong, Hong Kong, Hong Kong

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Publications (3)2.15 Total impact

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    Image Fusion, 01/2011; , ISBN: 978-953-307-679-9
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    ABSTRACT: Modern Computer Aided Design/Modeling (CAD/CAM) software allows complex surgical simulations, but it is often difficult to transfer and execute precisely the planned scenarios during actual operations. We describe a new method of integrating CAD/CAM surgical plans directly into a computer surgical navigation system, and demonstrate its use to guide three complex orthopaedic surgical procedures: a periacetabular osteotomy of a dysplastic hip, a corrective osteotomy of a post-traumatic tibial deformity, and a multi-planar resection of a distal femoral tumor followed by reconstruction with a CAD custom prosthesis.
    Computer Aided Surgery 08/2010; 15(4-6):65-74. DOI:10.3109/10929088.2010.514131 · 1.08 Impact Factor
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    ABSTRACT: A novel technique of using both a navigation system and an endoscope in intra-lesional curettage of benign bone tumors enables safe and adequate tumor removal via a minimal access approach. We performed curettage of benign bone tumors in five consecutive patients (4 female, 1 male, mean age 31.4 years) using a commercial CT-based navigation system supplemented by visual guidance through a shoulder arthroscope. The bone defect was filled with bone cement in four patients and with artificial bone substitute in one patient. Mean follow-up time was 8.8 months (range: 7-12 months). Mean duration of surgery was 144 min (range: 120-165 min). Mean wound length of each portal site was 19.5 mm (range: 15-25 mm). All patients could achieve a full range of joint movement and walk unaided at 4 weeks post-surgery. No local recurrence was noted.
    Computer Aided Surgery 02/2010; 15(1-3):32-9. DOI:10.3109/10929081003775881 · 1.08 Impact Factor

Publication Stats

20 Citations
2.15 Total Impact Points

Top Journals

Institutions

  • 2010
    • The Chinese University of Hong Kong
      • Department of Orthopaedics and Traumatology
      Hong Kong, Hong Kong