Reconstruction of Laser-scanned 3D Torso Topography and Stereoradiographical Spine and Rib-cage Geometry in Scoliosis

Poncet, Philippe; Delorme, Stefan; Ronsky, Janet L.; Dansereau, J.; Clynch, George; Harder, James A.; Dewar, Richard D.; Gu, Ping; Zernicke, Ronald F.

doi:10.1080/10255840008907998

Cited by 39 publications

(25 citation statements)

References 32 publications

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“…Computer-aided guidance, automated reconstruction, and three-dimensional imaging of both surface and bony geometry may assist in future determination of level selection and overall balance [5,6,24]. To date, there is no study that correlates overall post-surgical balance and advanced intraoperative imaging for AIS.…”

Section: Discussionmentioning

confidence: 99%

Do Current Recommendations for Upper Instrumented Vertebra Predict Shoulder Imbalance? An Attempted Validation of Level Selection for Adolescent Idiopathic Scoliosis

Bjerke

Cheung

Shifflett

et al. 2015

HSS Journal®: The Musculoskeletal Journal of Hospital for Speci

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Background: Shoulder balance for adolescent idiopathic scoliosis (AIS) patients is associated with patient satisfaction and self-image. However, few validated systems exist for selecting the upper instrumented vertebra (UIV) post-surgical shoulder balance. Questions/Purposes: The purpose is to examine the existing UIV selection criteria and correlate with post-surgical shoulder balance in AIS patients. Methods: Patients who underwent spinal fusion at age 10-18 years for AIS over a 6-year period were reviewed. All patients with a minimum of 1-year radiographic followup were included. Imbalance was determined to be radiographic shoulder height |RSH|≥15 mm at latest follow-up.

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Section: Discussionmentioning

confidence: 99%

Do Current Recommendations for Upper Instrumented Vertebra Predict Shoulder Imbalance? An Attempted Validation of Level Selection for Adolescent Idiopathic Scoliosis

Bjerke

Cheung

Shifflett

et al. 2015

HSS Journal®: The Musculoskeletal Journal of Hospital for Speci

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“…This motivation has led to the development of 3D scanning systems [3][4][5][6][7][8][9] for the assessment of trunk deformities. All these systems provide a 3D reconstruction of the back or the entire torso with different resolutions depending on the systems.…”

Section: Introductionmentioning

confidence: 99%

Multilevel Analysis of Trunk Surface Measurements for Noninvasive Assessment of Scoliosis Deformities

Séoud

Dansereau

Cheriet

2012

Spine

Self Cite

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Study design: Reliability study. Objectives:To assess between-acquisition reliability of new multi-levels trunk cross-sections measurements, in order to define what is a real change when comparing two trunk surface acquisitions of a same patient, before and after surgery or throughout the clinical monitoring.Summary of background data: Several cross-sectional surface measurements have been proposed in the literature for non-invasive assessment of trunk deformity in patients with adolescent idiopathic scoliosis (AIS). However, only the maximum values along the trunk are evaluated and used for monitoring progression and assessing treatment outcome. Methods:Back surface rotation (BSR), trunk rotation (TR) and coronal and sagittal trunk deviation are computed on 300 cross-sections of the trunk. Each set of 300 measures is represented as a single functional data using a set of basis functions. To evaluate betweenacquisition variability at all trunk levels, a test-retest reliability study is conducted on 35 AIS patients. A functional correlation analysis is also carried out to evaluate any redundancy between the measurements.Results: Each set of 300 measures was successfully described using only 10 basis functions.The test-retest reliability of the functional measurements is good to very good all over the trunk, except above the shoulders levels. The typical errors of measurement are between 1.20 and 2.2 for the rotational measures and between 2 to 6 mm for deviation measures. There is a very strong correlation between BSR and TR all over the trunk, a moderate correlation between coronal trunk deviation and both BSR and TR and no correlation between sagittal trunk deviation and any other measurement. Conclusions:This novel representation of trunk surface measurements allows for a global assessment of trunk surface deformity. Multilevel trunk measurements provide a broader perspective of the trunk deformity and allow a reliable multi-level monitoring during clinical follow-up of patients with AIS and a reliable assessment of the esthetic outcome after surgery. KEY WORDS:Scoliosis, multi-level trunk surface measurement, functional data analysis, reliability, correlation. KEY POINTS:1) Trunk cross-sections measurements are reliable all along the trunk, except at the shoulders level.2) The maximum value of a measurement along the trunk overlooks the extent of the hump above and below the apex of the curve. MINI ABSTRACT / PRÉCIS:This study assesses the reliability of multi-levels trunk cross-sections measurements and defines the difference needed between trunk surface acquisitions to detect a real progression and/or surgical correction of trunk surface deformity at all trunk levels.

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“…Such systems are the Moiré-fringe mapping, the structured light techniques or Integrated Shape Imaging System (ISIS) (Turner-Smith 1984, 1988, Weisz 1988, Theologis 1997, Berryman 2008, 360° scanning devices (Poncet 2000) and stereo-photogrammetric systems (Frobin 1983). Laser techniques were also developed for corset manufacturing, but not for clinical use.…”

Section: Optical Techniquesmentioning

confidence: 99%

Three-Dimensional Assessment of the Scoliosis

Legaye¹

2012

Recent Advances in Scoliosis

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Reconstruction of Laser-scanned 3D Torso Topography and Stereoradiographical Spine and Rib-cage Geometry in Scoliosis

Cited by 39 publications

References 32 publications

Do Current Recommendations for Upper Instrumented Vertebra Predict Shoulder Imbalance? An Attempted Validation of Level Selection for Adolescent Idiopathic Scoliosis

Do Current Recommendations for Upper Instrumented Vertebra Predict Shoulder Imbalance? An Attempted Validation of Level Selection for Adolescent Idiopathic Scoliosis

Multilevel Analysis of Trunk Surface Measurements for Noninvasive Assessment of Scoliosis Deformities

Three-Dimensional Assessment of the Scoliosis

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