3D-CT analysis of anatomical and anthropometric parameters of vertebrae in children with Lenke type V idiopathic scoliosis

Kokushin, D.N.; Vissarionov, Sergey; Баиндурашвили, А Г; Bart, V. A.; Bogatyrev, Timur Bagaudinovich

doi:10.14531/ss2016.3.49-59

Cited by 2 publications

(1 citation statement)

References 7 publications

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“…Рентгенография позвоночника -«золотой» стандарт диагностики деформаций позвоночника [7] у детей, которая наряду с компьютерной рентгеновской томографией и EOS-сканированием [8] формирует группу лучевых методов диагностики. Алгоритмы диагностики деформации позвоночника по результатам рентгенографии достаточно изучены, а результаты таких алгоритмов -углы Кобба и сегрегация тяжести сколиоза по Чаклину [9] -заслуженно являются общепринятыми принципами дифференцирования сколиоза по степени тяжести. Единственным современным недостатком применения рентгенографии для мониторинга сколиоза является актуальность возникновения значительной лучевой нагрузки, которая при частом применении в диагностике деформации позвоночника может привести к развитию нежелательных явлений, связанных с ионизирующим излучением [10].…”

Section: Introductionunclassified

Digital models and tools for diagnosing three-dimensional spinal deformity based on stereophotogrammetry data

Shitoev,

Stolbov,

Murav'ev

et al. 2022

Appl. Math. Control Sci.

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Scoliosis is the most common orthopedic disease in children, which most often leads to disability. An urgent task of the current stage of the development of spinal deformity diagnostics is the search and introduction of new available methods of non-invasive safe diagnosis of spinal deformity at early stages, since existing diagnostic methods can detect spinal column deformity in three planes during the development of scoliosis, however, they have a number of limitations for use, since either X-ray radiation or diagnostic installations are used for their implementation, requiring complex installation in a separate room and training of operating personnel. In this regard, there is an urgent need to develop digital tools for the diagnosis of spinal deformity, which would neutralize these difficulties in clinical practice. The aim of the study was to develop a mathematical algorithm for identifying the deformation of the spinal column in the horizontal plane according to the photogrammetric evaluation of a three-dimensional model of the surface of the human back, which was obtained from the results of the operation of the original software for a personal telecommunications device. The algorithm for assessing spinal column deformity is a sequence of four stages: reposition of the coordinate system, stratification of the spine line into segments, calculation of the rotation of V-segments, separation of the V-segment ratios to the physiological bends of the spine and visualization of spinal deformity in the horizontal plane. The developed algorithm has a number of advantages compared to those developed earlier: it allows to identify the rotation of individual vertebrae and torsion of the spine as a whole, is implemented in relation to all vertebrae of the thoracic and lumbar spine, thereby providing the possibility of differentiated diagnosis of forms of spinal deformity - from posture disorders to scoliosis. The described algorithm is a separate part for modular software that allows diagnostics of spinal column deformity using a personal telecommunication device. This algorithm can be used in a comprehensive assessment of posture disorders and scoliosis, monitoring the dynamics of spinal column deformity in the rehabilitation process.

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Section: Introductionunclassified

Digital models and tools for diagnosing three-dimensional spinal deformity based on stereophotogrammetry data

Shitoev,

Stolbov,

Murav'ev

et al. 2022

Appl. Math. Control Sci.

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Selective application of navigation templates in idiopathic scoliosis: technical and hronometric features

et al. 2022

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Objective. To evaluate short-term result of selective navigation templates application in idiopathic scoliosis surgery.Material and Methods. A total of 12 patients aged 14–17 years with idiopathic scoliosis were included in the study. Group A included 6 patients treated with selective application of navigation templates for pedicle screws insertion in the most difficult zones. Group B (control) included 6 patients in whom all the pedicle screws were placed with free-hand technique. Number of screws inserted was 16–20 per patient. There was no significant difference between the groups in sex, age, Cobb angle, number of vertebrae instrumented, number of pedicle screws and laminar hooks. Surgery duration, blood loss, absolute and relative correction were compared. In Group A, duration of the 3D-objects fabrication and printing, as well as pedicle screw accuracy based on 2-mm increment grading system were evaluated.Results. Selective application of navigation templates as compared with total free hand screws placement significantly reduced surgery duration. Difference in blood loss and deformity correction was not significant. A total of 107 pedicle screws were placed in Group A, 48 of them with navigation templates and 59 by free-hand technique. Average pedicle width in screw installation with navigation templates was 4.28 ± 1.43 mm, and in that with free-hand technique 6.53 ± 1.72 mm, with significant difference. Accurate screw placement with navigation templates and by free-hand technique were 93.7 % and 88.0 %, respectively, with no significant difference. Duration of 3D-objects manufacturing was 1419 ± 190 minutes. Active operator’s involvement was required in about 10 % of the while.Conclusion. Selective application of a pair of two-level navigation templates for most difficult pedicles in idiopathic scoliosis significantly reduces surgery duration. Difference in blood loss and deformity correction is insignificant. Refusal of total templates usage for combination of navigation templates for selected difficult pedicles and free-hand technique for the rest is an option for shortening the preoperative preparation, but provides screw placement accuracy comparable with total templates usage (92.5–97.6 % as reported).

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3D-CT analysis of anatomical and anthropometric parameters of vertebrae in children with Lenke type V idiopathic scoliosis

Cited by 2 publications

References 7 publications

Digital models and tools for diagnosing three-dimensional spinal deformity based on stereophotogrammetry data

Digital models and tools for diagnosing three-dimensional spinal deformity based on stereophotogrammetry data

Selective application of navigation templates in idiopathic scoliosis: technical and hronometric features

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