Comparison of the biomechanical properties of a ventral cervical intervertebral anchored fusion device with locking plate fixation applied to cadaveric canine cervical spines. Issue 7 (3rd September 2013)

• Record Type: Journal Article
• Authors: Schöllhorn, Bernhard; Bürki, Alexander; Stahl, Christina; Howard, Judith; Forterre, Franck
• Is Part Of: Veterinary surgery. Volume 42:Issue 7(2013)
• Page Start: 825
• Page End: 831
• Publication Date: 2013-09-03
• Subjects: Veterinary surgery -- Periodicals; Veterinary Medicine -- Periodicals; Surgery -- Periodicals; Societies, Medical -- Periodicals; 636.0897
• DOI: 10.1111/j.1532-950X.2013.12044.x
• Languages: English
• ISSNs: 0161-3499

Abstract

<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <sec id="vsu12044-sec-0001" sec-type="section"> <title>Objective</title> <p>To evaluate fixation properties of a new intervertebral anchored fusion device and compare these with ventral locking plate fixation.</p> </sec> <sec id="vsu12044-sec-0002" sec-type="section"> <title>Study Design</title> <p> <italic>In vitro</italic> biomechanical evaluation.</p> </sec> <sec id="vsu12044-sec-0003" sec-type="section"> <title>Animals</title> <p>Cadaveric canine C4–C7 cervical spines (n = 9).</p> </sec> <sec id="vsu12044-sec-0004" sec-type="section"> <title>Methods</title> <p>Cervical spines were nondestructively loaded with pure moments in a nonconstraining testing apparatus to induce flexion/extension while angular motion was measured. Range of motion (ROM) and neutral zone (NZ) were calculated for (1) intact specimens, (2) specimens after discectomy and fixation with a purpose‐built intervertebral fusion cage with integrated ventral fixation, and (3) after removal of the device and fixation with a ventral locking plate.</p> </sec> <sec id="vsu12044-sec-0005" sec-type="section"> <title>Results</title> <p>Both fixation techniques resulted in a decrease in ROM and NZ (<italic>P</italic> < .001) compared with the intact segments. There were no significant differences between the anchored spacer and locking plate fixation.</p> </sec> <sec id="vsu12044-sec-0006" sec-type="section"> <title>Conclusion</title> <p>An anchored spacer appears to provide similar biomechanical stability to that of locking plate fixation.</p> </sec> </abstract>