- The Multiplier App automates calculations that were derived to predict mature height and bone length in children. This method was developed by our team at the International Center for Limb Lengthening (ICLL), Rubin Institute for Advanced Orthopedics (RIAO), Sinai Hospital of Baltimore.
- We have taught the Multiplier Method over the past 10 years at our annual Baltimore Limb Deformity Course (www.DeformityCourse.com). These calculations are typically performed by hand, using various formulas. Certain calculations are easy, but others involve more complicated formulas. Utilizing this App will reduce the time needed for these routine calculations, and decrease errors. You need only input the values about a patient (sex, age, length) and the App will execute the required Multiplier formula.
The Multiplier Method APP will allow you to make the following calculations:
• Lower Extremity
• Limb Length Discrepancy (congenital)
• Limb Length Discrepancy (developmental)
• Growth Remaining
• Bone Length at Maturity
• Timing of Angular Correction
• Timing of Epiphysiodesis
• Upper Extremity
• Limb Length Discrepancy (congenital)
• Limb Length Discrepancy (developmental)
• Growth Remaining
• Bone Length at Maturity
• Height
• Achondroplasia
• Height
• Sitting Height
• Lower Extremity Length
• Fetus – LLD of Tibia/Femur at Birth and Maturity
• Foot
• Foot Length
• Foot Length Discrepancy
• Spine Height
This APP also provides the following additional resources: User’s Guide, Standard Measurements for the Lower Limb and Foot, Multiplier Tables, Multiplier Formulae, Development of Apophyses, Epiphyses, and Bones figures, Elbow Scoring System to Determine Skeletal Age.
Disclaimer: No growth prediction method is 100% accurate; this App is not a substitute for sound and careful clinical judgment.
