Measurement for Prosthesis Socket

Manufacturing of Prosthesis and Orthosis :

We follow some steps which are required in the manufacturing of Prosthesis and Orthosis are listed below :

  Measurement : The residual limb and it's body are measured to determine the size of the desired Prosthesis. A plaster impression is used to evaluate the limb volume precisely. The limb volume will be used for fabrication of patient's test socket. During patient's mobility assessment, we discuss about the patient's mobility gains and his/her desired activity level. The patient's Prosthetic prescription will be based on these factors.

Marking for Prosthesis for Prosthesis Socket

  Socket : A silicon liner is fitted and a model of liner is created. The thermo plastic sheet is formed around the model to test the feet. A permanent socket is created.

  Plastic Parts : Plastic parts are created using methods like vaccum forming and injection moulding.

  Metal Parts : Metal parts are created using di-casting.

  Assembly of Entire Limb.

Creating a Plaster Cast for Prosthesis Socket

Here are some steps for preparing a Plaster of Paris (POP) mold for a Prosthesis :

  Step 1 - Mix the Plaster : Mix equal parts plaster of Paris and water in a food service type wrist to create a smooth, pour-able consistency.

  Step 2 - Fill the Mold : Fill the mold with the plaster of Paris.

  Step 3 - Insert a Vacuum Pipe : As the plaster begins to harden, insert a vacuum pipe into the mold to remove air bubbles.

  Step 4 - Set and Remove the Wraps : After 20–30 minutes, remove the wraps to expose the positive model.

  Step 5 - Smooth the Model : Use a Surform rasp to smooth out any bumps or irregularities.

  Step 6 - Apply a Finish : Apply a final smooth finish with screen wire and wet-or-dry Fabricut silicon carbide.

  Step 7 - Seal the Model : Seal the model with Hosmer-Lac to prevent the plaster from affecting the inner PVA bag.

You can also use a mold release agent to prevent the plaster from sticking to the mold. Some common mold release agents include Vaseline, Liquid Hand Soap, Pam Cooking Spray, Crisco, Vegetable Oil, and Murphy's Oil Soap.