Multiplier app for iPhone and iPad
-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.
Pros and cons of Multiplier app for iPhone and iPad
Multiplier app good for
A great useful app I use on a regular basis at my clinic.
Its easy to use, very intuitive and save my time. Ive stopped using the tables after installing this app and I also show it to my patients. Highly recommended.
Multiplier is a wonderful app that is both accurate and user friendly.
You will love it wether you are a professional seeking to improve his clinical practice , or a layman who just wants a bit of fun
A+++ to the ICLL team
The Multiplier app is an extremely useful tool for any clinician treating children. It allows predictions of growth based on current measurements by applying Multipliers for various age/sex/specific clinical questions.
While these predictions were derived with often cumbersome and complex formulae, the app simplifies and streamlines and involves simply typing in some values. The app will provide answers and will break it down to allow a thorough understanding of expected measurement throughout the remainder of growth. This not only provides the clinician with valuable information through which to make treatment decisions, but also provides detailed predictions to better educate patients and their families as to expectations, as well as their treatment options.
I use it all the time for calculations such as expected leg length discrepancies at maturity (as well as the breakdown year to year), expected height at maturity, timing of angular correction for hemiepiphysiodesis, as well as timing of epiphysiodesis.
I share this information with my patients so that can appreciate the options available to them. They find it easy to understand and helpful to manage expectations and understand treatment options.
Other resources available through this app include standard values for the lower limbs, the original formulae, simplified ways for predicting skeletal age, timing of appearance of apophyses and a number of other useful features.
I highly recommend this app to efficiently provide critical information for planning treatment, even at the patients first visit. Patients and families appreciate the simplified predictions that really help them make informed decisions about treatment.
Any orthopedic surgeon who treats children, any pediatrician looking for a simple to use resource for growth information or anyone looking for information on expected growth should download this app. I really find it indispensable.
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.
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.
Some bad moments
Wonderful comprehensive guide for predicting bone length in children and its FREE!
Great app for predicting limb length discrepancy and height. Easy to use. Cute, pediatric friendly interface. Also works well on iPad.
Hey,
Im 12 years old and a female. I am 4 foot 9 and a half and I havent grown in 5 months. My mom is about 5 foot 2 and my dad is probably 5 foot 9. I weigh 84 pounds.
I was wondering if anybody knew if I would grow any more?!?
I really dont like being short...
I dont know if this would have to do with anything, but I have started my period...
So... Can someone write me back?
Thanks.
The best app ever it is sooooooo cool you should get it best app ever
This app is great for orthopedic doctors, their patients, and anyone who is interested how their bones grow.
I am a 12 year old girl and currently 5,7 I know wow!! But it said at maturity Ill be 5,9 I know thats not true because I grow 5 inches at least each year and I have no signs of slowing down yet!
