This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.
Leg length discrepancy at skeletal maturity (multiplier method)
Prognosis of leg length discrepancy according to Paley: congenital Δ × M, after growth arrest of one physis Δ + remaining growth
Calculation aid for healthcare professionals: the calculator reproduces what the sources cited assign to the inputs. Clinical assessment and every treatment decision remain with the treating physician. Inputs and results are not stored.
Frequently asked questions
Leg length discrepancy at skeletal maturity (multiplier method): What does this calculator compute?
Uses the leg length multipliers of Paley 2000 (table by Mills & Nelson 2016) to calculate the expected leg length discrepancy at skeletal maturity – for congenital, proportionally growing discrepancies (Δ × M) or after complete arrest of a growth plate (Δ + remaining growth of the plate) – as well as the growth reserve of femur and tibia.
Leg length discrepancy at skeletal maturity (multiplier method): Which sources is this calculator based on?
Paley D, Bhave A, Herzenberg JE, Bowen JR: Multiplier method for predicting limb-length discrepancy (J Bone Joint Surg Am 82:1432–1446) (2000); Mills G, Nelson SC: An improved spreadsheet for calculating limb length discrepancy and epiphysiodesis timing using the multiplier method (J Child Orthop 10:313–319) (2016); Hubbard EW, Liu RW, Iobst CA: Understanding Skeletal Growth and Predicting Limb-Length Inequality in Pediatric Patients (J Am Acad Orthop Surg 27:312–319) (2019); Aird JJ, Cheesman CL, Schade AT, Monsell FP: Validation of the multiplier method for leg-length predictions on a large European cohort and an assessment of the effect of physiological age on predictions (J Child Orthop 11:71–76) (2017)