Low vitamin d levels are common among patients undergoing orthopedic surgery. However, very little is known about how vitamin d affects outcomes in patients undergoing total joint replacement surgery. Our study will look at how common low vitamin d status is among patients undergoing total hip and total knee replacement surgery. We will also look at how vitamin d levels affect complication rates and hospital readmission rates.
The purpose of this study is to create and maintain a registry, which is a database (a searchable collection of information) about children, adolescents and young adults with pediatric onset of rheumatic diseases. This data may help in the evaluation of the safety and benefit of medications that are prescribed to patients who have rheumatic diseases.