Evaluation of radiological indices of the spine and pelvis ratios in children with a severe form of slipped capital femoral epiphysis
- Authors: Barsukov D.B.1, Bortulev P.I.1, Vissarionov S.V.1,2, Pozdnikin I.Y.1, Baskaeva T.V.1
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Affiliations:
- H. Turner National Medical Research Center for Children’s Orthopedics and Trauma Surgery
- North-Western State Medical University named after I.I. Mechnikov
- Issue: Vol 10, No 4 (2022)
- Pages: 365-374
- Section: Clinical studies
- URL: https://journals.rcsi.science/turner/article/view/264651
- DOI: https://doi.org/10.17816/PTORS111772
- ID: 264651
Cite item
Abstract
BACKGROUND: Slipped capital femoral epiphysis is one of the most severe diseases of the hip joint in children and is characterized by the displacement of the proximal femoral epiphysis, occurring as a result of a decrease in the mechanical strength of its growth plate. Some pathological processes in the hip joints and lumbosacral spine cause changes in the position (vergence) of the pelvis in the sagittal plane and the development of degenerative dystrophic diseases. The analysis of the spine–pelvis relationships in children with slipped capital femoral epiphysis may provide the basis for the development of new approaches to the surgical correction of the deformity of the hip component of the affected joint.
AIM: To assess the radiological parameters of the frontal and sagittal spine–pelvis relations in children with proximal femur deformity in slipped capital femoral epiphysis.
MATERIALS AND METHODS: The study included 30 patients (30 hips) aged 11–14 years with a severe form of slipped capital femoral epiphysis characterized by the presence of a posterior displacement of the epiphysis of >60° combined with the downward displacement of no more than 10° in one of the joints and absence of displacement (pre-slip stage) in the other. Patients underwent clinical and radiological examinations. The radiographs taken in the standing position were used to assess the values of thoracic kyphosis and lumbar lordosis, pelvic incidence (PI), sacral slope (SS), pelvic tilt (PT), sagittal vertical axis (SVA), and spine–sacral angle (SSA). The obtained data were subjected to statistical processing.
RESULTS: The patients had pelvic retroversion (decreased values of the PI and SS indices and increased PT index) and formed hypolordotic type of vertical posture according to P. Roussouly classification. In addition, thoracic hyperkyphosis occurred, and the SVA shifted to the front, which can be considered a mechanism of trunk balance compensation for the existing pelvic retroversion and reduction of lumbar lordosis to maintain the ability to move in an upright position.
CONCLUSIONS: Children with this severe form of slipped capital femoral epiphysis are characterized by pelvic retroversion, decreased lumbar lordosis and increased thoracic kyphosis, positive trunk imbalance, and PT toward the affected limb. Planning and reconstructive restorative interventions on the affected hip joint should consider existing pathological changes to restore the correct spine–pelvis relationships and prevent degenerative dystrophic processes in the lumbosacral spine.
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##article.viewOnOriginalSite##About the authors
Dmitriy B. Barsukov
H. Turner National Medical Research Center for Children’s Orthopedics and Trauma Surgery
Author for correspondence.
Email: dbbarsukov@gmail.com
ORCID iD: 0000-0002-9084-5634
SPIN-code: 2454-6548
MD, PhD, Cand. Sci. (Med.)
Russian Federation, Saint PetersburgPavel I. Bortulev
H. Turner National Medical Research Center for Children’s Orthopedics and Trauma Surgery
Email: pavel.bortulev@yandex.ru
ORCID iD: 0000-0003-4931-2817
SPIN-code: 9903-6861
Scopus Author ID: 57193258940
MD, PhD, Cand. Sci. (Med.)
Russian Federation, Saint PetersburgSergei V. Vissarionov
H. Turner National Medical Research Center for Children’s Orthopedics and Trauma Surgery; North-Western State Medical University named after I.I. Mechnikov
Email: vissarionovs@gmail.com
ORCID iD: 0000-0003-4235-5048
SPIN-code: 7125-4930
Scopus Author ID: 6504128319
MD, PhD, Dr. Sci. (Med.), Professor, Corresponding Member of RAS
Russian Federation, Saint Petersburg; Saint PetersburgIvan Y. Pozdnikin
H. Turner National Medical Research Center for Children’s Orthopedics and Trauma Surgery
Email: pozdnikin@gmail.com
ORCID iD: 0000-0002-7026-1586
SPIN-code: 3744-8613
MD, PhD, Cand. Sci. (Med.)
Russian Federation, Saint PetersburgTamila V. Baskaeva
H. Turner National Medical Research Center for Children’s Orthopedics and Trauma Surgery
Email: tamila-baskaeva@mail.ru
ORCID iD: 0000-0001-9865-2434
SPIN-code: 5487-4230
MD, orthopedic and trauma surgeon
Russian Federation, Saint PetersburgReferences
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