Three-dimensional reconstruction using stereoradiography for evaluating adult spinal deformity: a reproducibility study.
Article dans une revue avec comité de lecture
JournalEuropean Spine Journal
PURPOSE: In addition to the sagittal alignment, impact of transverse plane parameters (TPP) and rotatory subluxation on patients reported outcomes were highlighted. One of the hypotheses for genesis of degenerative scoliosis is disc degeneration with increased axial vertebral (AVR) and intervertebral rotation (AIR). Therefore, TPP analysis at early stage of the scoliosis seems of particular interest. This study aims at assessing reliability of tridimensional (3D) reconstructions of adult spinal deformity (ASD) patients. METHODS: Thirty ASD patients underwent biplanar radiographs and were divided into two groups (Cobb angle >30° or <30°). Spinal parameters and TPP (apical AVR, AIR of upper and lower level of main curve) were measured. Four operators performed 3D reconstructions twice. Intra and inter-observer reliabilities were analyzed using ISO standard 5725-2, to quantify the global standard deviation of reproducibility (S R). RESULTS: Mean Cobb angle was 31°, mean age 55 years (70% of female). Mean values of apical AVR, upper and lower level AIR were, respectively, 16° ± 15°, 6° ± 6° and 5° ± 5°. Spinopelvic parameters S R were below 4.5°. For Cobb angle <30°, S R was 7.8°, 9.6°, 4.5° and 4.9°, respectively, for AVR apex, torsion index, upper and lower AIR. Reliability was worse in the group of patients with Cobb angle above 30°. CONCLUSIONS: 3D analysis was reliable for Cobb and sagittal parameters. 3D analysis for TPP was reproducible when Cobb is below 30°. However, uncertainty is larger for Cobb above 30°. Nevertheless, 3D reconstructions could help surgeons to anticipate onset of rotatory subluxation while assessing axial rotation evolution for small deformity and choose best delay for surgical treatment.
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Clinical and stereoradiographic analysis of adult spinal deformity with and without rotatory subluxation Article dans une revue avec comité de lectureFERRERO, Emmanuelle; LAFAGE, Renaud; CHALLIER, Vincent; DIEBO, Bassel G.; GUIGUI, Pierre; MAZDA, Keyvan; SCHWAB, Frank; SKALLI, Wafa; LAFAGE, Virginie (Elsevier Masson, 2015)Introduction: In degenerative adult spinal deformity (ASD), sagittal malalignment and rotatory sublux-ation (RS) correlate with clinical symptomatology. RS is defined as axial rotation with lateral listhesis.Stereoradiography, ...
Tridimensional Analysis of Rotatory Subluxation and Sagittal Spinopelvic Alignment in the Setting of Adult Spinal Deformity Article dans une revue avec comité de lectureFERRERO, Emmanuelle; LAFAGE, Renaud; DIEBO, Bassel G.; CHALLIER, Vincent; ILLHARREBORDE, Brice; SCHWAB, Frank; SKALLI, Wafa; GUIGUI, Pierre; LAFAGE, Virginie (Springer Science and Business Media LLC, 2017)Study Design: Retrospective single-center. Objective : To investigate rotatory subluxation (RS) in adult spinal deformity (ASD) with three-dimensional (3D) stereoradiographic images and analyze relationships between RS, ...
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Article dans une revue avec comité de lectureFERRERO, Emmanuelle; GUIGUI, Pierre; KHALIFÉ, Marc; CARLIER, Robert; FEYDY, Antoine; FELTER, Adrien; LAFAGE, Virginie; SKALLI, Wafa (Springer Science and Business Media LLC, 2021)Introduction: Global alignment analysis is of upmost importance in adult spinal deformity patients (ASD). Numerous parameters exist in the literature to measure global alignment based upon C7 or T1. One common limitation ...
Relationships between radiographic parameters and spinopelvic muscles in adult spinal deformity patients Article dans une revue avec comité de lectureFERRERO, Emmanuelle; SKALLI, Wafa; LAFAGE, Virginie; MAILLOT, Cédric; CARLIER, Robert; FEYDY, Antoine; FELTER, Adrien; KHALIFE, Marc; GUIGUI, Pierre (Springer Verlag, 2020)Introduction While the clinical impact of coronal and sagittal alignment in adult spinal deformity (ASD) patients (pts) is established, there is a paucity of data in terms of axial plane deformity and potential association ...