View clinical trials related to AIS.
Filter by:The sagittal alignment of Adolescent Idiopathic Scoliosis (AIS) curves has attracted growing interest in recent years, to the extent that it has become a pivotal point in the Lenke classification, with the introduction of a sagittal modifier. In particular, thoracic curves, partly due to the theory of anterior overgrowth, are almost invariably characterized by thoracic hypokyphosis, which can be severe (T5-T12 thoracic kyphosis < 10°, that corresponds to a Lenke - sagittal modifier). However, the development of such a severely abnormal sagittal alignment has consequences that are not limited only to the thoracic region, but it rather results in a disruption of the entire sagittal spinal alignment. In fact, thoracic hypokyphosis tends to shift the C7SVA backward and to decrease the T1 slope. As a compensation, this ultimately leads to the development of a cervical kyphosis in order to translate the head forward and maintain global sagittal balance. While the interplay relationship between thoracic hypokyphosis and the development of cervical kyphosis has been well established in modern literature, the results regarding the amount of spontaneous correction of cervical kyphosis achieved after hypokyphotic AIS correction are conflicting. There are several papers in literature that study the complex relationship between AIS and cervical kyphosis, and they did not report any improvement in cervical lordosis after AIS correction, even when successful restoration of thoracic kyphosis (TK) was achieved. Conversely, other authors did report an improvement in cervical sagittal alignment after AIS correction. The aim of the present paper is firstly to assess the amount of spontaneous change in cervical sagittal alignment after correction of AIS with associated severe thoracic hypokyphosis (<10°). Secondly, the aim of the study is to seek for any radiographical parameter able to predict the postoperative cervical sagittal alignment in these patients, via a multivariate regression analysis.
This study is designed to evaluate the vaccine efficacy, immunogenicity and safety of the 4-valent Human Papillomavirus (Types 6, 11, 16, and 18) Recombinant Vaccine (Hansenula Polymorpha) in Chinese Female Subjects Aged 18-45 Years .
This is a prospective, randomized, single blind, concurrent controlled, multi-center study. Patients presenting with symptoms of acute ischemic stroke who have evidence of a large vessel occlusion in the cerebral circulation.
Early recanalization is a major prognostic factor in vascular accidents ischemic brain injury (AIC). The acute phase therapies of AIC aim to recanalization by intravenous thrombolysis and/or mechanical thrombectomy. Recanalization is identified immediately during thrombectomy by per-procedural arteriography. For the thrombolysis, only a performed MRI will validate the recanalization. This "proof of concept" study aims to identify an Electro-Encephalographic biomarker (EEG) of the recanalization in real time, the EEG being easy to set up. This biomarker will be sought during recanalization certified by thrombectomy in order to identify the window time for which the biomarker must be sought on the EEG. During this study, the identified EEG biomarker can be used to validate the recanalization during the intravenous thrombolysis in future studies
This is a single-center, prospective, non-randomized, open-label, interventional, real-world study. The mild/moderate AIS patients will be recruited through screening of 250,000 primary and secondary school students in Haikou, Hainan Province. The patients will be treated with different non-surgical interventions (exercise intervention or brace intervention) according to the physician's recommendations and the patient's intention. Patients will be followed up for 36 months to evaluate the effectiveness and safety of non-surgical interventions in the real world.
The study will evaluate the immunogenicity and safety of 9-valent HPV recombinant vaccine in Chinese healthy females16 to 26 years of age.
Adolescent Idiopathic scoliosis (AIS) is a three-dimensional deformity of the spine of unknown aetiology, characterised by a lateral curvature and vertebral rotation. Its prevalence is estimated to be 2.5% in children between aged 10 and 16 in Hong Kong. Despite concerns regarding the psycho-social issues patients face at and after AIS screening, there is no study that directly address this subject. The investigator propose to conduct a prospective longitudinal study on the psycho-social impact of AIS early screening and long-term monitoring amongst patients and their caregivers. The proposed study will bridge this research gap by evaluating a cohort of newly-diagnosed patients with AIS through the school screening program and their caregivers. A mixed-methods research approach to tap into the distinct social, behavioural, emotional and parental experiential profiles will be used. Patterns across different profiles can enhance the investigator's understanding of which aspects of AIS early screening and long-term monitoring can adversely affect patients' psychological well-being. Findings will facilitate targeted approaches to address specific psycho-social impact of scoliosis and its treatment, heighten compliance to long-term monitoring and prevention of scoliosis progression, and mobilise a new clinical care model that addresses patient and clinician concerns.
This phase 3 study will evaluate the immunogenicity and safety of 9-valent HPV recombinant vaccine in Chinese females aged 9 to 45 years
The study will evaluate the immunogenicity and safety of 4-valent and 9-valent HPV recombinant vaccine in Chinese healthy females 20 to 45 years of age.
This study is designed to evaluate the vaccine efficacy, immunogenicity and safety of the 9-valent Human Papillomavirus (Types 6, 11, 16, 18,31,33,45,52 and 58) Recombinant Vaccine (Hansenula Polymorpha) in Chinese Female Subjects Aged 20-45 Years .