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Six-Degrees-of-Freedom Cervical Spine Range of Motion During Dynamic Flexion-Extension After Single-Level Anterior Arthrodesis by William J. Anderst, Joon.

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Presentation on theme: "Six-Degrees-of-Freedom Cervical Spine Range of Motion During Dynamic Flexion-Extension After Single-Level Anterior Arthrodesis by William J. Anderst, Joon."— Presentation transcript:

1 Six-Degrees-of-Freedom Cervical Spine Range of Motion During Dynamic Flexion-Extension After Single-Level Anterior Arthrodesis by William J. Anderst, Joon Y. Lee, William F. Donaldson, and James D. Kang J Bone Joint Surg Am Volume 95(6):497-506 March 20, 2013 ©2013 by The Journal of Bone and Joint Surgery, Inc.

2 X-ray tubes (left) directed x-rays through subject-to-image intensifiers (right). 2.5-ms x-ray pulses (70 kV, 160 mA) were generated by cardiac cine-angiography generators at a rate of 30 Hz, and images were collected by high-speed cameras synchronized to t... William J. Anderst et al. J Bone Joint Surg Am 2013;95:497- 506 ©2013 by The Journal of Bone and Joint Surgery, Inc.

3 Virtual x-ray system for model-based tracking. William J. Anderst et al. J Bone Joint Surg Am 2013;95:497- 506 ©2013 by The Journal of Bone and Joint Surgery, Inc.

4 Three-dimensional bone models at five instants of the flexion cycle from a representative control subject. William J. Anderst et al. J Bone Joint Surg Am 2013;95:497- 506 ©2013 by The Journal of Bone and Joint Surgery, Inc.

5 Flexion-extension (F-E), twist, and lateral bend angles between C4 and C5 for a representative subject. William J. Anderst et al. J Bone Joint Surg Am 2013;95:497- 506 ©2013 by The Journal of Bone and Joint Surgery, Inc.

6 Representation of flexion-extension range of motion in the C5/C6 arthrodesis (fusion) and control groups. William J. Anderst et al. J Bone Joint Surg Am 2013;95:497- 506 ©2013 by The Journal of Bone and Joint Surgery, Inc.

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