AIS causes a loss of trunk height. This paper documents this loss against sitting height standards and assesses formulae for adjusting height loss back to the standard. A total of 334 patients (84% female) with AIS and no other known systemic disease had sitting height measured. This was compared to standards of sitting height with age and the ratio of height to sitting height with age (HSH). The corrected height was calculated using published formulae and replotted against these standards.Aim:
Methods:
Background. Scoliosis is described as a lateral
The aim of this study is to clarify the implication of ciliary pathway on the onset of the
Linear spinal cord distraction, in animal models, leads to elevated intra-compartmental spinal cord pressure. We developed an in vitro model of distraction, with increasing tensile force, to demonstrate the relationship between the degree of
Background: Back pain is a common complaint in the Western World with a sedentary lifestyle contributing to its recurrence. The aim of this study was to establish differences in lumbar and thoracic posture after a period of unsupported sitting between subjects with a history of back pain but no current symptoms (BP) and those without a history of back pain (NBP). Method: Twenty subjects (10 BP and 10 NBP group) fulfilling specific inclusion criteria were recruited. Ethical approval was obtained from the Institutions Ethical Committee. Following placement of markers on the vertebrae L5, T12 and C7, subjects sat unsupported on a plinth following standardisation of hip and knee position. A digital image (sagittal view) was taken at 1, 5 and 10 minutes.
Objective: To document an unusual pattern of clinical presentation simulating cerebral palsy and investigate the evolution of spinal deformity in relation to patients’ growth and responsiveness to levodopa therapy. Study Design-Material: A retrospective study was performed including 3 pediatric patients with dopa-responsive dystonia who developed in the course of their disease
Purpose. To investigate associations between sagittal thoracolumbar spine shape with sex and measures of adiposity throughout adulthood. Methods. Thoracolumbar spine shape was characterised using statistical shape modelling on lateral dual-energy x-ray absorptiometry images, recorded for vertebral fracture analysis, of the spine from 1529 participants of the MRC National Survey of Health and Development, acquired at age 60–64 years. Associations between spine shape modes (SM) and 1) sex, 2) contemporaneous measures of overall and central adiposity (indicated by body mass index and waist circumference, respectively), 3) changes in total and central adiposity during earlier stages of adulthood and age at onset of overweight, were investigated. Results. Four of the first eight spine modes (SM) describing lumbar spine shape differed by sex; on average, women had more lordotic spines than men with relatively smaller but caudally increasing anterior-posterior (a-p) vertebral diameters. Greater BMI and waist circumference and earlier onset of overweight were associated with uneven (or snaking)
The aim of this study was to evaluate the reliability and validity of a patient-specific algorithm which we developed for predicting changes in sagittal pelvic tilt after total hip arthroplasty (THA). This retrospective study included 143 patients who underwent 171 THAs between April 2019 and October 2020 and had full-body lateral radiographs preoperatively and at one year postoperatively. We measured the pelvic incidence (PI), the sagittal vertical axis (SVA), pelvic tilt, sacral slope (SS), lumbar lordosis (LL), and thoracic kyphosis to classify patients into types A, B1, B2, B3, and C. The change of pelvic tilt was predicted according to the normal range of SVA (0 mm to 50 mm) for types A, B1, B2, and B3, and based on the absolute value of one-third of the PI-LL mismatch for type C patients. The reliability of the classification of the patients and the prediction of the change of pelvic tilt were assessed using kappa values and intraclass correlation coefficients (ICCs), respectively. Validity was assessed using the overall mean error and mean absolute error (MAE) for the prediction of the change of pelvic tilt.Aims
Methods
This systematic review aims to identify 3D predictors derived from biplanar reconstruction, and to describe current methods for improving curve prediction in patients with mild adolescent idiopathic scoliosis. A comprehensive search was conducted by three independent investigators on MEDLINE, PubMed, Web of Science, and Cochrane Library. Search terms included “adolescent idiopathic scoliosis”,“3D”, and “progression”. The inclusion and exclusion criteria were carefully defined to include clinical studies. Risk of bias was assessed with the Quality in Prognostic Studies tool (QUIPS) and Appraisal tool for Cross-Sectional Studies (AXIS), and level of evidence for each predictor was rated with the Grading of Recommendations, Assessment, Development, and Evaluations (GRADE) approach. In all, 915 publications were identified, with 377 articles subjected to full-text screening; overall, 31 articles were included.Aims
Methods
Most studies on LBP have focused on adults although many investigations have shown that the roots of LBP lie in adolescence. Several mechanical, physical and behavioral factors have associated with non-specific LBP in adolescents. To our knowledge no previous study has investigated using advanced statistics all previously reported parameters together with psychological and psychosocial factors on LBP in adolescents aged 15–19 years. 688 students aged 16± 1 years from 5 randomly selected high schools participated in this multifactorial study and completed a questionnaire containing questions on daily activity, backpacks carrying, psychological and psychosocial behavior. Anthropometric data as well biplane
Study design: Prospective multifactorial study on low back pain (LBP) in adolescents. Background data: Most studies on LBP have focused on adults although may investigations have shown that the roots of LBP lie in adolescence. Several mechanical, physical and behavioral factors have associated with non-specific LBP in adolescents. To our knowledge no previous study has investigated using advanced statistics all previously reported parameters together with psychological and psychosocial factors on LBP in adolescents aged 15–19 years. Material and Methods: 688 students aged 16± 1 years from 5 randomly selected high schools participated in this study and completed a questionnaire containing questions on daily activity, backpacks carrying, psychological and psychosocial behavior. Anthropometric data as well biplane
AIS is present in 3–5% of the general population. Large curves are associated with increased pain and reduced quality of life. However, no information is available on the impact of smaller curves, many of which do not reach secondary care. The objective of this project was to identify whether or not there is any hidden burden of disease associated with smaller spinal curves. The Avon Longitudinal Study of Parents and Children (ALSPAC) is a population-based birth cohort that recruited over 14,000 pregnant women from the Bristol area between 1991–1992 and has followed up their offspring regularly. At aged 15 presence or absence of
Purpose of the study. Monitoring of scoliosis is traditionally done with radiographs which can be associated with an increased risk of cancer secondary to multiple exposures over many years. This study investigates whether lateral asymmetry (LA) from ISIS2 surface topography can predict radiographic cobb angle, to provide an alternative non- invasive means of monitoring scoliosis patients. Methods. A total of 72 untreated patients with scoliosis (77 curves) with a Cobb angle of 55 degrees or less were included in the study. They had clinical assessment, cobb angle measurement taken from a standard radiograph and surface topography done on the same day. The cobb angle were measured by single surgeon using digital PACS system. The surgeon was unaware of the LA score. Lateral asymmetry was measured using ISIS2 surface topography done by a research nurse who was also unaware of the cobb angle as previously described. Lateral asymmetry was calculated using the standard ISIS2 software. A comparison of cobb angle and LA was performed. Linear regression analysis was performed to define an equation predicting Cobb from LA. The predicted Cobb angles were then compared with the measured radiographic Cobb angles using Bland-Altman analysis. All statistical analysis was carried out using R. Results. The regression equation is: Predicted Cobb = 1.04∗LA + 9.972 with a Pearson correlation coefficient of 0.85 for Cobb angles less than 55 degrees. Bland-Altman analysis of the difference between radiographic Cobb and predicted Cobb from LA gave a mean difference of 0.08 degrees, standard deviation of 6.71 degrees and 95% limits of agreement of −13.3 to 13.5 degrees. For cobb angle less than 55 degrees on radiograph, ISIS2 was able to predict the cobb angle within 13 degrees. Conclusion. Cobb angles themselves display poor reliability, estimates ranging from 3 degrees to 10 degrees. Even so, the 95% confidence limits on the prediction of Cobb angle from ISIS2 LA are too wide to use it alone for monitoring
Introduction: While bracing may improve the natural history of patients with adolescent idiopathic scoliosis with moderate curves, little attention has been paid to the potential impact of brace treatment on their quality of life. We hypothesized that bracing has a negative affect on the physical and psychosocial health of affected adolescents. Methods: Quality of life (QOL) data was collected from patients with adolescent idiopathic scoliosis and a
Introduction Vertebral rotation is an important aspect of spinal deformity in idiopathic scoliosis, associated with ribcage asymmetry. Although both lateral curvature and rotation appear to increase together in progressive scoliosis, the mechanisms driving vertebral rotation are not clearly established and it is not known whether lateral curvature precedes rotation, or vice versa. This paper investigates the hypothesis that intravertebral (within the bone) rotation in idiopathic scoliosis is caused by growth in the presence of gravity-induced torsions, the twisting moments generated by body weight forces acting on the scoliotic spine. Methods Three-dimensional
Introduction. Monitoring of scoliosis is traditionally done with radiographs, which can be associated with an increased risk of cancer secondary to multiple exposures over many years. This study investigated whether the findings from surface topography can be used to monitor scoliosis curves and how much this method affects outcome scores in patients with scoliosis. This study therefore had two subsets: (1) to investigate whether lateral asymmetry (LA) from ISIS2 surface topography can predict radiographic Cobb angle, providing an alternative non-invasive means of monitoring patients with scoliosis (LA and Cobb subset); and (2) to establish the relationships between the magnitude of the deformity in scoliosis, measured by Cobb angle on radiograph and volumetric asymmetry (VA) with the ISIS2 surface topography, and the patient perception of self-image and mental health, measured with SRS-22 scores (Cobb, VA, and SRS subset). Methods. In the LA and Cobb subset, 72 untreated patients with scoliosis (77 curves) with a Cobb angle of 55° or less were included in the study. They had clinical assessment, Cobb angle measurement taken from a standard radiograph, and surface topography done on the same day. A comparison of Cobb angle and LA was done. In the Cobb, VA, and SRS subset, 89 untreated patients with scoliosis were included in the study. They had clinical assessment, Cobb angle measurement of radiograph, and surface topography done on the same day along with SRS-22 questionnaires. A comparison correlation of SRS scores for function, pain, self-image, and mental health against Cobb angle and VA was undertaken. All statistical analysis was done with software R. Results. In the LA and Cobb subset, for Cobb angle less than 55° on radiograph, ISIS2 was able to predict the Cobb angle within 13°. In the VA, Cobb, and SRS subset, Cobb angle contributed only about 10% to self-image, whereas VA contributed 14%. Cobb angle contributed about 6·2% to mental health, whereas VA contributed 8·6%. Conclusions. Cobb angles display poor reliability, with estimates ranging from 3° to 10°. Even so, the 95% CIs on the prediction of Cobb angle from ISIS2 LA are too wide to use it alone to monitor
This research sought a mathematical model to relate the postero-anterior (PA) and lateral (LAT) views of the spinal curve in scoliosis in an attempt to justify the acquisition of only One X-ray, thereby reducing patient exposure to harmful X-radiation while preserving complete 3D characterization of the spine. Using powerful developments in functional statistics and machine learning, no such relation could be found. Thus, this research sustained the clinical decision to acquire two biplanar X-rays and supported current research in 3D
In currently used expansive laminoplasty (ELAP) for cervical spondylotic myelopathy (CSM), persistent axial pain, restriction of neck motion and loss of cervical l ordosis have been the significance postoperative problems. To prevent them, the author has developed skip laminectomy in which ordinary laminectomy at appropriate levels is combined with partial laminectomy of the cephalad half of laminae with preservation of the muscular attachments at adjacent levels. Since December 98, the author performed this procedure on 55 patients with CSM who required multilevel posterior decompressions. Twenty-one of these cases with follow-up period longer than 8 months, with an average of 12 months, were observed. In skip laminectomy, a consecutive four-level decompression between C3/4 and C6/7 as an example is accomplished by removing alternate laminae (C4 and C6), the cephalad half of the C5 and C7 lamina and the ligamentum flava at those four levels. The laminae to be removed were selected after analysis of the pre- and postoperative radiological findings. Intraoperative blood loss averaged 34 grams. The operation time averaged 128 minutes. The patients were allowed to sit up or walk on the first postoperative day without neck support of any kind. An average recovery rate according to the Japanese Orthopaedic Association score was 63%. None of these patients complained of residual axial pain. The postoperative ranges of neck motion on lateral X rays averaged 87% of the preoperative ranges. The
Introduction Chicken studies implicate pinealectomy within a week of hatching as a cause of scoliosis. The nature of the scoliosis has been demonstrated to be similar to that of human idiopathic scoliosis. Scoliosis was not induced following pinealectomy in Rhesus monkeys (primate model). No human studies have been reported. The aim of this study is to determine if idiopathic scoliosis is associated with treatment for pineal lesions (presumably resulting in pinealectomy) in a human paediatric population. Methods A medical records search was performed in five Australian States for pineal lesions. Identified patients underwent clinical or radiological evaluation for scoliosis. Pathology varied from germ cell tumour, germinoma, pineoblastoma, teratoma to a pineal cyst and an epidermoid cyst. Treatment ranged from biopsy/ extirpation to radiotherapy/chemotherapy. Results Of 48 identified patients, thirteen are deceased. No scoliosis was present in the last imaging of the deceased. The mean age at presentation was 9.7 years (range 1–18 years). Ten are female. Two males have idiopathic scoliosis (4.2%). One has a 12° right upper thoracic curve (with 32° kyphosis) and the other has a 60° right thoracolumbar curve, requiring a two-stage arthrodesis. Discussion Although the incidence of idiopathic scoliosis in this cohort is greater than expected from Caucasian population studies (2–3%), it is not typical idiopathic-type, which has a female preponderance of larger deformities. New-born chicken studies demonstrate an incidence of between 50 and 100% scoliosis in the three months following pinealectomy. Chickens of both sexes are involved. Fundamental differences exist between chicken and human/primate models including the age at pinealectomy and the anatomical site of the pineal gland. Chickens have a naturally lordotic thoracic
Introduction: The study is aimed to present patient oriented diagnostics, treatment, remote rehabilitation potential and preliminary outcomes assessment in the group of osteoporotic compression fracture cases. Methods: 3D postural assessment originally developed of