Paley Growth vs Bone Ninja Sensei

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. - Dr. Dror Paley, M.D.

Bone Ninja is a teaching tool developed by two orthopedic surgeons who specialize in limb deformity correction: Dr. Shawn Standard and Dr. John Herzenberg. It is designed to help surgeons learn to analyze long bone deformities. Bone Ninja comes pre-loaded with radiographs of normal legs and deformed legs. You can analyze the provided cases or upload your own. Once your analysis is complete, you can then use the cut-out tool to try different osteotomy solutions. Suggested solutions for the provided cases are available for comparison. Bone Ninja includes tools for drawing lines, measuring angles, measuring lengths, and calibrating the magnification. The cutting tool allows you to manipulate one or more fragments to simulate correction of single or multilevel deformities. The analysis of the radiographs is based on methodology taught at our annual Baltimore Limb Deformity Course (BLDC), now in its 22nd year (DeformityCourse.com). We developed this app to supplement the BLDC and look forward to feedback from attendees and other users. Bone Ninja is not presented as a clinical tool, but rather an educational tool. It will not “automatically” analyze deformities. The student must first learn the methodology of analyzing and planning deformity correction in order to use Bone Ninja. Bone Ninja is a 21st century mobile alternative to pencil, ruler, goniometer, and paper. Bone Ninja will be periodically updated by adding more case examples, more explanations, and more tools. The name “Bone Ninja” is intentionally whimsical and reflects our philosophy of teaching as “infotainment.” Enjoy! Disclaimer The Bone Ninja App is designed for educational purposes only. The intent is to train physicians how to analyze long bone deformities. The Bone Ninja App is not intended to be used for medical diagnosis or treatment. In view of the possibility of human error or changes in medical science, neither the authors nor the developer warrant that the information contained in this software is accurate or complete and they are not responsible for any errors or omissions or the results obtained from the use of such information. Terms of Use and Privacy Policy: https://www.lifebridgehealth.org/main/terms-of-use-and-privacy-policy