▪ Spinal Motion After Cervical Fusion: In Vivo Assessment with Roentgen Stereophotogrammetry

Abstract

Roentgen stereophotogrammetry may detect motion in the in vivo cervical spine with a sensitivity heretofore unavailable. In patient 1, we were able to detect motion before it was visually manifest. In patient 2, small motions were detected at the level of a successful anterior cervical fusion, the significance of which remain uncertain.

Assessment of adjacent-segment mobility after cervical disc replacement versus fusion: RCT with 1 year’s results

“…It is supposed that the presence of a fusion could increase load and segmental range of motion at adjacent levels and cause localized trauma with subsequent accelerated disc degeneration [25,26,42]. Whether a cervical fusion results in accelerated adjacent disc degeneration with clinical manifestation of radiculopathy and/or myelopathy or these are related to a natural development in a predisposed person is currently under debate [7,9,22,23,25,26,42,43].…”

“…The screw for monocortical fixation is a titanium, self-tapping, conical screw of 10, 12, 14, 16, and 18 mm length with an outer diameter of 4.0 mm. The single level plate is offered with a length of 20,22,24,26,28,30, and 32 mm.…”

Evidence-based assessment and diagnosis of pelvic girdle disorders: a proposal for an alternate diagnostic category

“…[95][96][97][98] In this method, metal markers are implanted into bone and images are obtained. From the displacement of marker positions, the osteokinematic motion may be quantified.…”

Changed cervical kinematics after fusion surgery

“…Most studies rely on the analysis of medical imaging to evaluate changed cervical spine kinematics [1,2], and segmental changes due to fusion or prosthesis surgery have been demonstrated [3].…”