Reliability and scientific use of a surgical planning software for anterior cervical discectomy and fusion (ACDF)

PurposeSoftware-based planning of a spinal implant inheres in the promise of precision and superior results. The purpose of the study was to analyze the measurement reliability, prognostic value, and scientific use of a surgical planning software in patients receiving anterior cervical discectomy an...

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Hauptverfasser: Barth, Martin (VerfasserIn) , Weiß, Christel (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 31 January 2017
In: European spine journal
Year: 2017, Jahrgang: 26, Heft: 4, Pages: 1305-1311
ISSN:1432-0932
DOI:10.1007/s00586-017-4957-2
Online-Zugang:Verlag, kostenfrei, Volltext: http://dx.doi.org/10.1007/s00586-017-4957-2
Verlag, kostenfrei, Volltext: https://doi.org/10.1007/s00586-017-4957-2
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Verfasserangaben:Martin Barth, Christel Weiß, Christopher Brenke, Kirsten Schmieder

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520 |a PurposeSoftware-based planning of a spinal implant inheres in the promise of precision and superior results. The purpose of the study was to analyze the measurement reliability, prognostic value, and scientific use of a surgical planning software in patients receiving anterior cervical discectomy and fusion (ACDF).MethodsLateral neutral, flexion, and extension radiographs of patients receiving tailored cages as suggested by the planning software were available for analysis. Differences of vertebral wedging angles and segmental height of all cervical segments were determined at different timepoints using intraclass correlation coefficients (ICC). Cervical lordosis (C2/C7), segmental heights, global, and segmental range of motion (ROM) were determined at different timepoints. Clinical and radiological variables were correlated 12 months after surgery.Results282 radiographs of 35 patients with a mean age of 53.1 ± 12.0 years were analyzed. Measurement of segmental height was highly accurate with an ICC near to 1, but angle measurements showed low ICC values. Likewise, the ICCs of the prognosticated values were low. Postoperatively, there was a significant decrease of segmental height (p < 0.0001) and loss of C2/C7 ROM (p = 0.036). ROM of unfused segments also significantly decreased (p = 0.016). High NDI was associated with low subsidence rates.ConclusionsThe surgical planning software showed high accuracy in the measurement of height differences and lower accuracy values with angle measurements. Both the prognosticated height and angle values were arbitrary. Global ROM, ROM of the fused and intact segments, is restricted after ACDF. 
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