Multiplier Hack 7.0 + Redeem Codes
Predict height & bone length
Developer: LifeBridge Health
Category: Medical
Price: Free
Version: 7.0
ID: com.MultiplierApp
Screenshots
Description
-The Multiplier App automates calculations to predict mature height and bone length in children. This method was created originally in Baltimore at the University of Maryland, and subsequently developed at the International Center for Limb Lengthening (ICLL), Rubin Institute for Advanced Orthopedics (RIAO), Sinai Hospital of Baltimore.
-We have taught the Multiplier Method for more than 19 years at our annual Baltimore Limb Deformity Course (www.DeformityCourse.com). These calculations are typically performed by hand, using various formulae. Certain calculations are easy, but others involve more complicated formulae. Utilizing this app will reduce the time needed for these routine calculations and decrease errors. You need only input certain data (sex, age, length) and the app will calculate the answer by using the appropriate Multiplier formula.
The Multiplier App will allow you to make the following calculations:
• Lower Extremity
- Limb Length Discrepancy (LLD) (Congenital)
- LLD (Developmental)
- Growth Remaining
- Bone Length
- Timing of Angular Correction
- Timing of Epiphysiodesis
- Comprehensive (Congenital) LLD and Epiphysiodesis
-Scanogram Calculations (calculates femur/tibia lengths, overall limb length discrepancy, and amount/side of femur/tibia discrepancies)
• Upper Extremity
- LLD (Congenital)
- LLD (Developmental)
- Growth Remaining
- Bone Length
• Height and CDC Growth Charts (calculates height at maturity, calculates height at every age, and plots the patient’s height and weight on the CDC growth charts)
• Achondroplasia
- Height
- Sitting Height
- Leg Length
• Fetus (calculates the length of tibia or femur at birth and maturity)
• Foot
- Foot Length
- Foot Length Discrepancy
• Spine (calculates sitting height at maturity)
• Oblique Plane Deformity (calculates magnitude, orientation, and direction of an oblique plane deformity)
• Inclined Osteotomy (calculates the rotational orientation and the vertical inclination of the osteotomy)
This app also provides the following additional resources:
-Bone Age: Elbow and Hand (shows how to determine skeletal age by using radiographs of the elbow or hand)
-Figures that show the standard measurements for the lower limb and foot
-The multiplier formulae that the app uses to perform the calculations
-Tables that show the multiplier values that are used in the formulae
-Figures that show the Solomin Foot Analysis (deformity correction planning for the midfoot, hindfoot, and ankle using reference lines and angles provided by Dr. Leonid Solomin)
-Figures that show the development of the apophyses, epiphyses, and bones
-Bibliography
-User guide
Disclaimer: No growth prediction method is 100% accurate; this App is not a substitute for sound and careful clinical judgment.
Privacy Policy: We respect the privacy of the people who use International Center for Limb Lengthening apps. The Multiplier app does not collect, use or distribute any data from the users.
Version history
7.0
2019-08-12
We added “Scanogram Calculations” under “Lower Extremity.” After entering the scanogram measurements, the screen will calculate the lengths of the individual femora and tibiae as well as the overall discrepancy for the limbs (using the femoral and tibial discrepancies). It will also provide the amount of each tibial and femoral discrepancy and whether each discrepancy is present on the right side or the left side. Under “Additional Resources,” we have added a new section called “Solomin Foot Analysis” that shows deformity correction planning for the midfoot, hindfoot, and ankle using reference lines and angles provided by Dr. Leonid Solomin. We improved the formatting of the data entry screens to reduce errors when inputting data. For example, units of length (cm or inches) no longer have a default unit selected; the user must choose the unit of length. We improved the formatting of the results screens to reduce errors in interpreting data. The Multiplier has been upgraded to support the latest iOS and improve its performance.
6.3.1
2018-11-02
We have corrected an issue with a data entry screen.
6.3
2018-08-09
The Multiplier has been upgraded to support the latest iOS and improve its performance.
We changed the formatting of several results screens to make them easier to read and understand. We revised the content and improved the formatting of many of the help menus. We updated the bibliography that is located in the Additional Resources section and included links to each article’s abstract on PubMed.
We changed the formatting of several results screens to make them easier to read and understand. We revised the content and improved the formatting of many of the help menus. We updated the bibliography that is located in the Additional Resources section and included links to each article’s abstract on PubMed.
6.0
2017-01-03
We changed the formatting of several results screens to make them easier to read and understand. If you decide to e-mail the results of the calculations, we have improved the content and the formatting of these e-mails. The Additional Resources section now includes the latest illustrations for the normal angles and measurements of the foot. We revised the content and improved the formatting of many of the help menus. We added a new article to the bibliography list that is located in the Additional Resources section. This 2016 article is a research study that was published in the Journal of Pediatric Orthopaedics that evaluates the use of the Multiplier App to predict growth and epiphysiodesis. The app is now optimized for iOS 10.
5.0
2015-08-11
In the “Height and CDC Growth Charts” section, we have added the ability to plot a child’s height and weight on the CDC growth charts. The charts contain percentile curves that use age and gender-specific information to show the distribution of body measurements in U.S. children. Under “Additional Resources,” we have added new illustrations that show how to use a radiograph of the left hand to determine the bone age (skeletal age) of a child. Unlike other methods of determining bone age that use multiple criteria, the shorthand bone age (SBA) method uses one criterion for each age (see Heyworth et al. The shorthand bone age assessment: a simpler alternative to current methods. J Pediatr Orthop. 2013;33(5):569-74.). Under “Additional Resources,” we added new images to the “Standard Measurements” section and improved the way these images are displayed. We have also optimized the app so that it is compatible with iOS 8 as well as the latest iPhones and iPads.
3.5
2014-01-30
We have improved The Multiplier App to reduce errors during data entry. In previous versions of the app, a default sex ("male") was pre-selected on each data entry screen. We observed that some users did not verify that the default sex was correct before pressing the calculate button. In this new version, no default sex is selected. If users fail to enter male/female for sex, an error message will appear that prompts them to select male or female. In the Fetus section, the error message prompts the user to select "male, female, or unknown."
3.0
2013-08-07
Changes in Version 3.0:
- Support for the iPhone 5 display
- Improved interface
- Added active button "Multiplier" on Main Menu screen, which opens a "Links and Contact Us Page"
- Improved content in the User Guide
- Support for the iPhone 5 display
- Improved interface
- Added active button "Multiplier" on Main Menu screen, which opens a "Links and Contact Us Page"
- Improved content in the User Guide
2.5
2013-08-02
Changes in Version 2.5:
- Support for the iPhone 5 display
- Improved interface
- Added active button "Multiplier" on Main Menu screen, which opens a "Links and Contact Us Page"
- Improved content in the User Guide
- Support for the iPhone 5 display
- Improved interface
- Added active button "Multiplier" on Main Menu screen, which opens a "Links and Contact Us Page"
- Improved content in the User Guide
2.0
2012-09-04
This Multiplier App update enhances the user experience by providing additional calculations and capabilities. The Multiplier can now email calculations/results. For many of the common calculations, the Multiplier now has the option to give not only lengths at maturity, but also lengths at every year until maturity. New and more versatile calculations improve the app’s functionality. Limb length discrepancy has been updated to allow for prior lengthening(s). This version introduces inclined osteotomy calculations as well as the oblique plane deformity calculations under additional resources. The help menus have been updated to provide explanations of figures and abbreviations.
List of Changes:
1) Email add-on
2) LLD (congenital) now allows prior lengthening(s)
3) Calculations may be displayed for every age (not just maturity)
a) Lower Extremity LLD (congenital)
b) Lower Extremity Bone Length
c) Upper Extremity LLD (congenital)
d) Upper Extremity Bone Length
e) Height
f) Foot Length
4) Lower Extremity
a) Comprehensive (congenital) LLD /Epiphysiodesis
b) Timing of Angular Correction of Entire Leg (femur + tibia)
c) Timing of staple removal for angular correction now displayed in results
5) Additional Resources
a) Inclined Osteotomy Rotation Angle
b) Oblique Plane Deformity
6) Help Menus Updated
This Multiplier App update streamlines the user experience. Figures and additional resources have been reformatted to maximize readability and ease of use. The data input keyboard has larger keys. Extraneous keys have been deleted. More help menus have been added to provide explanations of the figures and clarify abbreviations. Buttons and toggles are clearer. New multiplier tables are included. The interpolated values are more accurate.
List of Changes:
1) Icon change for the upper limb
2) Figures/Tables Updated Include:
a) Standard Measurements of the Lower Limb and Foot
i) Lower Limb: Frontal/Sagittal
ii) Foot: AP Measurements
iii) Foot: Lateral Measurements
iv) Foot: Axial Measurements
b) Multiplier Tables
i) Prenatal: At Birth
ii) Prenatal: At Maturity
iii) Lower Limb
iv) Upper Limb
v) Height
vi) Spine
vii) Foot Length
c) Multiplier Formulae
i) Limb Length Discrepancy and Bone Length Formulae
ii) Timing of Epiphysiodesis
iii) Sitting Height Formulae
d) Elbow Scoring System to Determine Skeletal Age
i) Step 1: Radiographic Scoring
ii) Step 2: Chart for Determining Skeletal Age
e) Development of Apophyses, Epiphyses, and Bones
3) Change to Male/Female selection input
4) Change to In/Cm toggle button
5) Input Keypad Changed
6) Correction of minor errors
List of Changes:
1) Email add-on
2) LLD (congenital) now allows prior lengthening(s)
3) Calculations may be displayed for every age (not just maturity)
a) Lower Extremity LLD (congenital)
b) Lower Extremity Bone Length
c) Upper Extremity LLD (congenital)
d) Upper Extremity Bone Length
e) Height
f) Foot Length
4) Lower Extremity
a) Comprehensive (congenital) LLD /Epiphysiodesis
b) Timing of Angular Correction of Entire Leg (femur + tibia)
c) Timing of staple removal for angular correction now displayed in results
5) Additional Resources
a) Inclined Osteotomy Rotation Angle
b) Oblique Plane Deformity
6) Help Menus Updated
This Multiplier App update streamlines the user experience. Figures and additional resources have been reformatted to maximize readability and ease of use. The data input keyboard has larger keys. Extraneous keys have been deleted. More help menus have been added to provide explanations of the figures and clarify abbreviations. Buttons and toggles are clearer. New multiplier tables are included. The interpolated values are more accurate.
List of Changes:
1) Icon change for the upper limb
2) Figures/Tables Updated Include:
a) Standard Measurements of the Lower Limb and Foot
i) Lower Limb: Frontal/Sagittal
ii) Foot: AP Measurements
iii) Foot: Lateral Measurements
iv) Foot: Axial Measurements
b) Multiplier Tables
i) Prenatal: At Birth
ii) Prenatal: At Maturity
iii) Lower Limb
iv) Upper Limb
v) Height
vi) Spine
vii) Foot Length
c) Multiplier Formulae
i) Limb Length Discrepancy and Bone Length Formulae
ii) Timing of Epiphysiodesis
iii) Sitting Height Formulae
d) Elbow Scoring System to Determine Skeletal Age
i) Step 1: Radiographic Scoring
ii) Step 2: Chart for Determining Skeletal Age
e) Development of Apophyses, Epiphyses, and Bones
3) Change to Male/Female selection input
4) Change to In/Cm toggle button
5) Input Keypad Changed
6) Correction of minor errors
1.5
2012-02-04
This Multipler App update streamlines the user experience. Figures and additional resources have been reformatted to maximize readability and ease of use. The data input keyboard has larger keys. Extraneous keys have been deleted. More help menus have been added to provide explanations of the figures and clarify abbreviations. Buttons and toggles are clearer. New multiplier tables are included. The interpolated values are more accurate.
List of Changes:
1) Icon change for the upper limb
2) Figures/Tables Updated Include:
a) Standard Measurements of the Lower Limb and Foot
i) Lower Limb: Frontal/Sagittal
ii) Foot: AP Measurements
iii) Foot: Lateral Measurements
iv) Foot: Axial Measurements
b) Multiplier Tables
i) Prenatal: At Birth
ii) Prenatal: At Maturity
iii) Lower Limb
iv) Upper Limb
v) Height
vi) Spine
vii) Foot Length
c) Multiplier Formulae
i) Limb Length Discrepancy and Bone Length Formulae
ii) Timing of Epiphysiodesis
iii) Sitting Height Formulae
d) Elbow Scoring System to Determine Skeletal Age
i) Step 1: Radiographic Scoring
ii) Step 2: Chart for Determining Skeletal Age
e) Development of Apophyses, Epiphyses, and Bones
3) Change to Male/Female selection input
4) Change to In/Cm toggle button
5) Input Keypad Changed
6) Correction of minor errors
List of Changes:
1) Icon change for the upper limb
2) Figures/Tables Updated Include:
a) Standard Measurements of the Lower Limb and Foot
i) Lower Limb: Frontal/Sagittal
ii) Foot: AP Measurements
iii) Foot: Lateral Measurements
iv) Foot: Axial Measurements
b) Multiplier Tables
i) Prenatal: At Birth
ii) Prenatal: At Maturity
iii) Lower Limb
iv) Upper Limb
v) Height
vi) Spine
vii) Foot Length
c) Multiplier Formulae
i) Limb Length Discrepancy and Bone Length Formulae
ii) Timing of Epiphysiodesis
iii) Sitting Height Formulae
d) Elbow Scoring System to Determine Skeletal Age
i) Step 1: Radiographic Scoring
ii) Step 2: Chart for Determining Skeletal Age
e) Development of Apophyses, Epiphyses, and Bones
3) Change to Male/Female selection input
4) Change to In/Cm toggle button
5) Input Keypad Changed
6) Correction of minor errors
1.2
2011-09-20
Updated User Guide.
1.1
2011-09-09
Updated User Guide.
1.0
2011-09-02
Ways to hack Multiplier
- Redeem codes (Get the Redeem codes)
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Ratings
4.6 out of 5
23 Ratings
Reviews
Momalie,
Lots of fun! Fairly consistent. Hope it's accurate!
I've had this app for several years. I have been tracking both of my daughters and the predictions have been fairly consistent throughout the years. I recently started tracking my infant son as well and I hope the predictions are correct, although I won't know for several years. I am very short and my husband is tall, so it's fun to use this for an idea of how tall my children will grow. Side note: I only use the height predictor. I have not tried the other functions.
CG083116,
Essential app for peds ortho
This app is imperative for anyone treating limb length discrepancies in the growing child. It can be used to predict final discrepancy magnitude, time epiphysiodeses, predict adult height, and provide an immense amount of clinically pertinent information for patients and providers alike. It comes from pioneers and household names in the field of deformity management, and I would absolutely recommend it to anyone seeing these patients!
FP2018Eng,
The best for limb length discrepancy calculation!
This is, without a doubt, the absolute best app for anyone who sees patients with limb length discrepancies. Easy to use, reliable, and based on established data.
There is also a wonderful tutorial (on VuMedi) to understand how to use it.
This is a game changer in a busy clinic!
There is also a wonderful tutorial (on VuMedi) to understand how to use it.
This is a game changer in a busy clinic!
alexinpeds,
Multiplier the best app for providers!
This app is easy to use, simple and fast In a few seconds I can answer all the questions parents will ask about the predicted height and leg length discrepancy!
Peds Orthopedic Doc,
Fantastic update!
Very useful update to an already critical App for pedipods. The new bone age section for hand x-Rays is simple to use and efficient. The new CDC growth chart option makes it easy to share graphically displayed data with parents. Thanks for these new tools!
Plato Party,
Essential tool for pediatric orthopaedic surgeons
This is an invaluable tool for practicing pediatric orthopaedic surgeons developed by Drs. Herzenberg and Paley - a must-have free download for all orthopaedic residents and orthopaedic surgeons.
taltano,
Awesome app
Can’t live without it in my practice!! Honestly, a must have app for any pediatric orthopedic surgeon.
Heir K,
Growth
Help me to get taller and bigger faster
Pedi-pod,
Quick and well designed
As a pediatric orthopedist with a focus in deformity correction, I find this app to be an excellent resource. Within the limits of the data on which the program is based, I have not found a better resource. Excellent for quick teaching and calculations in the office setting.
Peds ortho,
Useful easy-to-use app
Very clinically useful app - can be easily used in the middle of a busy clinic to calculate limb length discrepancy, growth remaining, timing of epiphysiodesis and much more; very helpful resources in "Additional resources" for bone age, normal joint angles and oblique plane deformity calculations. Growth charts are great to show parents. Highly recommend.
