# Design of a Modular Plantar Orthosis System through the Application of TRIZ Methodology Tools
## 3 Results  
### Generating a Prototype  
The results obtained in each of the phases of the methodological process are presented below. From phase 1, the formulation of the ideality of a plantar orthosis system was obtained for this work, which was expressed as follows: \"a prefabricated system that allows combining the actions of shaft re-alignment and pressure redistribution according to specific morphological and pathological characteristics\". From this ideality, three parameters or engineering characteristics that the plantar orthosis system should possess were extracted: standardization, customization, and capacity to perform simultaneous actions. The first parameter, standardization, was established to facilitate its manufacture. The second, personalization, to be adapted to the variety of morphological and pathological characteristics among patients. And the third, the ability to perform simultaneous actions, with the intention of treating two or more pathologies at the same time. Having identifiedthese parameters, the ideality of the system was reformulated in terms of these, being expressed as: \"a standardized system capable of customization and simultaneous actions\". Phase 2 identified a technical contradiction between two of the engineering parameters of the system established in the previous phase, standardization, and customization. This contradiction was raised as follows: if the personalization of the plantar orthosis is optimized, then it can be adapted and perform its function according to the needs of the patient, but the possibility of standardization to reduce costs is compromised. It was determined that the \"customization\" parameter was equivalent to the following generic TRIZ parameters: shape, reliability, and adaptability, while for the \"standardization\" parameter, its equivalents in generic TRIZ parameters were speed, manufacturing accuracy, manufacturability, and productivity. This allowed us to rethink the technical contradiction as a function of the generic parameters of TRIZ. The technical conflict was summarized in solving the problem of optimizing the shape, reliability, and adaptability of the system without compromising its speed, manufacturing precision, manufacturability, and productivity. From phase 3, the construction of the matrix for the resolution of technical contradiction was obtained for the case of the conflict between the parameters of the plantar orthosis system. The three parameters that improve it, shape, reliability, and adaptability, were placed in the rows, while the four parameters that degrade, speed, manufacturing precision, manufacturability, and productivity, were placed in the columns. In the spaces where the rows intercept the columns, the inventive principles the methodology proposes to apply to overcome the conflict between the intercepted parameters were placed [32]. Table 1 shows the construction of the matrix. For this particular case, the inventive principles were identified in bibliographic sources which include and describe them [31] and are as follow:  
* #1: Segmentation
* #6: Universality
* #10: Preliminary action
* #11: Beforehand cushioning
* #13: The other way round
* #14: Spheroidality--curvature
* #15: Dynamics
* #17: Another dimension
* #18: Mechanical vibration
* #21: Skipping
* #26: Copying
* #27: Cheap short-living objects
* #28: Mechanics substitution
* #29: Pneumatics and hydraulics
* #30: Flexible shells and thin films
* #31: Porous materials
* #32: Color changes
* #34: Discarding and recovering
* #35: Parameter changes
* #38: Strong oxidants
* #40: Composite materials  
In this case, priority was given to safeguarding the manufacturability parameter. From the matrix for the resolution of technical contradictions, the inventive principles that appear at the intersection of said parameter with respect to the three parameters that improve the system were extracted.