Faculty Collaboration Database

Correlation of transverse rotation of the spine using surface topography and 3D reconstructive radiography in children with idiopathic scoliosis. Spine Deform 2024 Jul;12(4):1001-1008

Date

02/26/2024

Pubmed ID

38403800

DOI

10.1007/s43390-024-00838-7

Scopus ID

2-s2.0-85185949083 (requires institutional sign-in at Scopus site)

Abstract

PURPOSE: The relationship between axial surface rotation (ASR) measured by surface topography (ST) and axial vertebral rotation (AVR) measured by radiography in the transverse plane is not well defined. This study aimed to: (1) quantify ASR and AVR patterns and their magnitudes from T1 to L5; (2) determine the correlation or agreement between the ASR and AVR; and (3) investigate the relationship between axial rotation differences (ASR-AVR) and major Cobb angle.

METHODS: This is a retrospective study evaluating patients (age 8-18) with IS or spinal asymmetry with both radiographic and ST measurements. Demographics, descriptive analysis, and correlations and agreements between ASR and AVR were evaluated. A piecewise linear regression model was further created to relate rotational differences to Cobb angle.

RESULTS: Fifty-two subjects met inclusion criteria. Mean age was 14.1 ± 1.7 and 39 (75%) were female. Looking at patterns, AVR had maximal rotation at T8, while ASR had maximal rotation at T11 (r = 0.35, P = .006). Cobb angle was 24.1° ± 13.3° with AVR of - 1° ± 4.6° and scoliotic angle was 20.9° ± 11.5° with ASR of - 2.3° ± 6.6°. (ASR-AVR) vs Cobb angle was found to be very weakly correlated with a curve of less than 38.8° (r = 0.15, P = .001).

CONCLUSION: Our preliminary findings support that ASR measured by ST has a weak correlation with estimation of AVR by 3D radiographic reconstruction. This correlation may further help us to understand the application of transverse rotation in some clinical scenarios such as specific casting manipulation, padding mechanism in brace, and surgical correction of rib deformity.

Author List

Patel M, Liu XC, Tassone C, Escott B, Yang K, Thometz J

Authors

Benjamin G. Escott MBBS Associate Professor in the Orthopaedic Surgery department at Medical College of Wisconsin
Xue-Cheng Liu PhD Professor in the Orthopaedic Surgery department at Medical College of Wisconsin
John G. Thometz MD Professor in the Orthopaedic Surgery department at Medical College of Wisconsin
Kai Yang PhD Assistant Professor in the Data Science Institute department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Adolescent
Child
Female
Humans
Imaging, Three-Dimensional
Male
Radiography
Retrospective Studies
Rotation
Scoliosis
Spine
Thoracic Vertebrae