Limb Lengthening.us
Dror Paley, MD, FRCSC
ORTHOPEDIC EDUCATIONAL SITE BY THE MOST
EXPERIENCED LIMB LENGTHENING SURGEON IN THE
WORLD
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App Info

Paley Growth


Prediction of height, limb length and limb length discrepancy are all done using the Paley Multiplier method.
Instead of using the Multiplier tables, a calculator and formulae this app allows you to enter patient age, sex
and length parameters in order to calculate the prediction. Using this app you can predict limb length and
limb length discrepancy at maturity for congenital and developmental discrepancies of the lower or upper
limbs. It allows calculation of the age of epiphysiodesis for a desired correction and growth remaining.
Standing and sitting height at maturity in normals and in achondroplasia can also be predicted. Foot length
and fetal bone and limb length discrepancy can also be predicted. The multiplier growth charts and deformity
parameters are also included for reference. The multiplier method is as or more accurate than other growth
prediction methods and validation studies are published and referenced in the bibliography.

To use this app, first set the units of measurement and prediction (mms, cms or ins). Press on the icon that
represents the type of prediction desired. Follow the menu choices and enter the required data in each field.
Press calculate to get the prediction.

Dror Paley, MD

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Bibliography

Paley D, Bhave A, Herzenberg JE, Bowen JR: Multiplier method for predicting limb-length discrepancy. J Bone
Joint Surg Am 82:1432-1446, 2000.

Paley J, Talor J, Levin A, Bhave A, Paley D, Herzenberg JE: The multiplier method for prediction of adult
height. J Pediatr Orthop 24:732-737, 2004.

Paley D: Principles of Deformity Correction. 1st ed, Corr. 3rd printing. Rev ed. Berlin: Springer-Verlag, 2005

Aguilar JA, Paley D, Paley J, Patel M, Santpure S, Bhave A, Herzenberg JE: Clinical validation of the multiplier
method for predicting limb length at maturity: Part I. J Pediatr Orthop 25:186-191, 2005.

Aguilar JA, Paley D, Paley J, Patel M, Santpure S, Herzenberg JE, Bhave A: Clinical validation of the multiplier
method for predicting limb length discrepancy and outcome at epiphysiodesis: Part II. J Pediatr Orthop 25:
192-196, 2005.

Paley D, Matz AL, Kurland DB, Lamm BM, Herzenberg JE: The multiplier method for prediction of adult height
in patients with achondroplasia. J Pediatr Orthop 25:539–542, 2005.

Paley D, Matz AL, Kurland DB, Lamm BM, Herzenberg JE: The multiplier method for prediction of adult height
in patients with achondroplasia. J Pediatr Orthop 25:539–542, 2005.

Paley J, Gelman A, Paley D, Herzenberg JE: The prenatal multiplier method for prediction of limb length
discrepancy. Prenat Diagn 25:435–438, 2005.

Paley D, Gelman A, Shualy MB, Herzenberg JE: Multiplier method for limb-length prediction in the upper
extremity. J Hand Surg Am 33:385–391, 2008.