The Internet Journal of Minimally Invasive Spinal Technology™ ISSN: 1937-8254

The Internet Journal of Minimally Invasive Spinal Technology is the official online journal of ISMISS/SICOT (International Society of Minimally Invasive Spinal Surgery, affiliate of SICOT) and AAMISMS (American Academy of Minimally Invasive Spine Surgery and Medicine)

Ijmist1 Ijmist2 Ijmist3

Miniature Robotic Guidance In MIS Spinal Surgery - Accuracy, Radiation And Procedure Time

Read printer friendly

Subscribe in a reader

Share with others

M. Hardenbrook MD
The Boston Spine Group

A.J. Khanna MD
Johns Hopkins University

I. Lieberman MD
Cleveland Clinic Foundation

J. Wang MD
University of California, Los Angeles

R.D. Guyer MD
Texas Back Institute

Citation: M. Hardenbrook, A. Khanna, I. Lieberman, J. Wang & R. Guyer : Miniature Robotic Guidance In MIS Spinal Surgery - Accuracy, Radiation And Procedure Time . The Internet Journal of Minimally Invasive Spinal Technology. 2008 Supplement I - to IJMIST Vol 1 No 2

Abstract

Design: Prospective, controlled, multi-center, cadaveric study, evaluating efficacy of miniature robotic guidance for percutaneous pedicle screws.
Methods: Twelve cadavers, 234 screws, 17 surgeons (T9-S1). Accuracy (post-procedural CT), fluoroscopy time, radiation exposure (badge and ring dosimeters) and procedure time were measured.
Results: Mean accuracy was 2.6 mm (std 0.7mm) for control; 1.1 mm (0.4) for study group. Control averaged 136 mrem X-Ray exposure per surgeon; 4.2 in study group. 13 of 15 surgeons in study group (87%) experienced radiation levels below measurable threshold. Average radiation dose for control was 10.1 mrem/screw, with average fluoro time/screw 27.6 sec; 0.2 mrem and 1.2 sec respectively in study group. Average procedure time for control was 1:59 hours (ave. 19 screws), compared with 1:14 hr (20 screws) for new robotic users and 0:49 hr for experienced (18 screws). Average time per screw was 6:16 minutes (std 3:03 min), 4:03 minutes (1:05 min) and 2:45 minutes respectively.
Conclusions: Use of miniature, bone-mounted robotic guidance for percutaneous pedicle screws resulted in accuracy twice better than free hand. 56 times lower radiation and 23 times shorter fluoroscopy were observed, with time savings of 36% - 56%. Across all measures, robotic guidance improved performance and reduced variations between surgeons.

This article was last modified on Fri, 13 Feb 09 13:44:20 -0600

This page was generated on Thu, 18 Mar 10 07:41:39 -0500, and may be cached.


	The Internet Journal of Minimally Invasive Spinal Technology™ ISSN: 1937-8254 \| Home \| Editors \| Current Issue \| Archives \| Instructions for Authors \| Disclaimer \| Share with others \| The Internet Journal of Minimally Invasive Spinal Technology is the official online journal of ISMISS/SICOT (International Society of Minimally Invasive Spinal Surgery, affiliate of SICOT) and AAMISMS (American Academy of Minimally Invasive Spine Surgery and Medicine) Miniature Robotic Guidance In MIS Spinal Surgery - Accuracy, Radiation And Procedure Time Read printer friendly Subscribe in a reader Share with others M. Hardenbrook MD The Boston Spine Group A.J. Khanna MD Johns Hopkins University I. Lieberman MD Cleveland Clinic Foundation J. Wang MD University of California, Los Angeles R.D. Guyer MD Texas Back Institute Citation: M. Hardenbrook, A. Khanna, I. Lieberman, J. Wang & R. Guyer : Miniature Robotic Guidance In MIS Spinal Surgery - Accuracy, Radiation And Procedure Time . The Internet Journal of Minimally Invasive Spinal Technology. 2008 Supplement I - to IJMIST Vol 1 No 2 Abstract Design: Prospective, controlled, multi-center, cadaveric study, evaluating efficacy of miniature robotic guidance for percutaneous pedicle screws. Methods: Twelve cadavers, 234 screws, 17 surgeons (T9-S1). Accuracy (post-procedural CT), fluoroscopy time, radiation exposure (badge and ring dosimeters) and procedure time were measured. Results: Mean accuracy was 2.6 mm (std 0.7mm) for control; 1.1 mm (0.4) for study group. Control averaged 136 mrem X-Ray exposure per surgeon; 4.2 in study group. 13 of 15 surgeons in study group (87%) experienced radiation levels below measurable threshold. Average radiation dose for control was 10.1 mrem/screw, with average fluoro time/screw 27.6 sec; 0.2 mrem and 1.2 sec respectively in study group. Average procedure time for control was 1:59 hours (ave. 19 screws), compared with 1:14 hr (20 screws) for new robotic users and 0:49 hr for experienced (18 screws). Average time per screw was 6:16 minutes (std 3:03 min), 4:03 minutes (1:05 min) and 2:45 minutes respectively. Conclusions: Use of miniature, bone-mounted robotic guidance for percutaneous pedicle screws resulted in accuracy twice better than free hand. 56 times lower radiation and 23 times shorter fluoroscopy were observed, with time savings of 36% - 56%. Across all measures, robotic guidance improved performance and reduced variations between surgeons. This article was last modified on Fri, 13 Feb 09 13:44:20 -0600 This page was generated on Thu, 18 Mar 10 07:41:39 -0500, and may be cached.
Home \| Journals \| Sponsors \| Books \| PubMed \| Editorial Help \| Privacy Policy \| Disclaimer \| Job Opportunities \| Contact Copyright Internet Scientific Publications, LLC., 1996 to 2010.