3.4.3 Structural Fabrication

3.4.3    Structural Fabrication

Definition:  Fabrication of the structural framework of the prosthesis/orthosis including integrated components and design features.

Code             Procedure Description
1 Prosthesis/Orthosis alignment transfer


Duplication of the prosthesis/orthosis with its alignment characteristics.  May require use of alignment tools and techniques e.g. vertical fabricating jig, joint squares, moulding notches.
2 Moulded reinforcement Addition of materials during moulding process for strength and/or function.
3 Drape moulding Forming material to positive model, joining material together creating a seam, finish trim lines Many materials can be drape moulded into a structure. The methods depend on the properties of the material and. may include heating material, soaking, applying vacuum e.g. high temperature thermoplastic.
4 Blister moulding Forming material to positive model creating a seamless finish, finish trim lines e.g. high temperature thermoplastic.
5 Bladder vacuum moulding Moulding a structure using a bladder.
6 Laminating


Impregnating material lay-up with resin or laminate on positive model, usually under vacuum to form a structure.
7 Contouring metal Bending of a rigid material to assist with the structure and function of a prosthesis/orthosis.
8 Extrusion moulding Moulding of liner or pad using extrusion-moulding process. e.g. silicone injection moulding or 3-D printing.
9 Silicone hand-forming Moulding of liner or pad by rolling silicone, forming anatomical details, finishing trim lines, allow for curing.
10 Autoclave moulding Moulding pre-impregnated materials under heat and above ambient pressure to cure material on the positive model.
11 Soft tissue liner Forming liner material to a positive model. Includes moulding of buildups, addition of localized pressure reducing pads, finishing trim lines e.g. flexible thermoplastic, closed cell EVA, silicone.
12 Flexible bladder Fabrication of flexible section to aid in donning/doffing prosthesis/orthosis e.g. silicone or flexible laminate.
13 Inflatable air bladder Installation of inflatable pads to assist in volume management.
14 Vacuum assisted componentry installation Installation of componentry necessary for an elevated vacuum system. Used for, but not limited to, suspension of prosthesis/orthosis, and/or wound management.
15 Myo-electrode installation Installation and connection of myo-electrodes.
16 Obturator door Creation of opening to aid donning/doffing. Includes determining placement and creating opening of door section, positioning and fabricating of clip or strap attachments.
17 Removable condylar wedge Forming removable condylar wedge to aid donning/doffing. Shape material to positive model, finish edges.
18 Pull-in tube or opening Creation of pull-in opening or installation of pull-in tube to aid donning of prosthesis.
19 Suspension modality installation Assembly of structural components used to suspend a prosthesis/orthosis. e.g. shuttle lock installation, suction valve installation.
20 Leather liner creation Forming leather to positive model; includes making pattern and moulding to positive model.
21 Sewing Sewing rigid or semi-rigid materials to form the structure or interface of a prosthesis/orthosis.
22 Finishing edges and surfaces Sealing/ encasing/ smoothing edges to ensure safe usage and to prevent failure/ wear of material or injury to patient.  May include grinding, buffing, binding, sewing, flaming.
23 Shoe modifications Alterations made to footwear as part of prosthetic and/or orthotic treatment.



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