Multiplier

Multiplier is an advanced Chrome extension designed to automate complex calculations predicting mature height and bone length in children. Developed at the University of Maryland and further refined at the International Center for Limb Lengthening, this tool reduces manual errors and saves time by applying specialized formulae based on user input such as sex, age, and bone length.

Key features include calculations for lower and upper extremity limb length discrepancies, growth remaining, timing for angular corrections, and epiphysiodesis. The app supports diverse assessments including CDC growth chart plotting, achondroplasia measurements, fetal bone length estimates, foot length analysis, and spine sitting height predictions. Additionally, it offers educational resources like bone age determination via radiographs, standardized limb measurements, detailed multiplier formulae, and deformity correction planning using the Solomin Foot Analysis.

Ideal for orthopedic specialists and clinicians, Multiplier ensures precise, swift evaluations to aid clinical judgment in pediatric limb and growth assessments. It prioritizes user privacy without collecting personal data, though it should complement—not replace—expert medical evaluation and judgment.