Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Predictors of Spontaneous Remodelling of Angular Knee Deformities in Children with Healed Nutritional Rickets: A Prospective Cohort Study Protocol

Version 1 : Received: 29 July 2021 / Approved: 13 August 2021 / Online: 13 August 2021 (22:44:42 CEST)

How to cite: Baraka, M.M.; Samir, S.; Mahmoud, S.; Elsedfy, H.; Mahmoud, R.A.; El-Sobky, T.A. Predictors of Spontaneous Remodelling of Angular Knee Deformities in Children with Healed Nutritional Rickets: A Prospective Cohort Study Protocol. Preprints 2021, 2021080304 (doi: 10.20944/preprints202108.0304.v1). Baraka, M.M.; Samir, S.; Mahmoud, S.; Elsedfy, H.; Mahmoud, R.A.; El-Sobky, T.A. Predictors of Spontaneous Remodelling of Angular Knee Deformities in Children with Healed Nutritional Rickets: A Prospective Cohort Study Protocol. Preprints 2021, 2021080304 (doi: 10.20944/preprints202108.0304.v1).

Abstract

Background: Nutritional rickets is still considered as a global health problem especially in low-resource countries and immigrant societies of developed countries. Generalized skeletal deformities including angular knee deformities as genu varum and genu valgum are prominent features of nutritional rickets. Angular knee deformities can cause gait difficulties. However, the true remodelling potential of the healed knee deformities is largely unknown to the pediatric and orthopedic community. Aims: The primary objective of this study protocol is to investigate the natural history of disease in regard to the remodelling potential of angular knee deformities in children and adolescents with healed nutritional rickets. And determine the potential patient- and deformity-related factors that are associated with a favorable deformity remodelling as age and sex of patients and type, severity, laterality of deformities etc. Methods: This will be a prospective observational analytical cohort natural history of disease study. A minimum of at least 140 knees with healed nutritional rickets and angular knee deformities will be observed at regular three-monthly intervals over a period of at least one year. We will report two outcome variables namely; clinical and radiological tibio-femoral angle. And independent patient and deformity-related variables as age, sex, deformity type, severity and laterality. Inferential statistics namely bivariate and multivariate analysis will be employed accordingly to identify the relation between outcome variables and the different independent variables. Ethics and dissemination: This protocol study has been approved by the institutional research ethics committee. Results will be presented at conferences and submitted to relevant international and society publications. Authors will also communicate the results to their scholarly networks and post them on scholarly networking sites. Conclusions: This study has the potential for improving the decision-making process as to which patients deserve conservative treatment and which deserve surgical deformity correction. Results are expected to have an impact on the clinical practice of pediatricians, orthopedic surgeons and family physicians alike.

Keywords

Child nutrition disorders; Vitamin D deficiency rickets; Metabolic bone diseases; Genu valgum; Genu varum; Bone remodelling.

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