Silicone ArmLiner - Fabrication of a Transradial Prosthesis with Ottobock Silicone ArmLiner - Technical Information 3.3.1 - Introduction

Sep 27, 2026

Residual limb socket quality and comfort are central to an upper limb prosthesis, and a silicone ArmLiner improves adhesion and reduces frictional forces while enabling unrestricted pronation and supination when adequate limb length is available. The guide details silicone properties such as temperature resistance, water and perspiration resistance, neutral odor, high gas permeability, and practical handling requirements to avoid wrinkles and air pockets. A step-by-step example shows fabrication of a transradial prosthesis using the specified Ottobock Silicone ArmLiner, including component selection, measurement deduction, casting, plaster procedures, and safety notes about solvents.

LanguageEnglish

CategoryHealthcare

FormatPDF

Pages16

Reading Time40 min

AccessFree to download

Introduction

Components

Taking Measurements

Fabricating the Socket

Silicone ArmLiner Fabrication of a Transradial Prosthesis with Ottobock Silicone ArmLiner Technical Information 3.3.1 1 Introduction The residual limb socket is of the utmost importance for the quality and comfort of an upper limb prosthesis. The use of a Silicone ArmLiner clearly improves wearer comfort, ensures good residual limb adhesion and reduces frictional forces. With an adequate residual limb length, an elbow-encompassing socket isnot required. This enables unrestricted pronation and supination. Silicone offers particular advantages: • Temperature resistant from-60 °C to +200 °C • Resistant to water, perspiration and weather • Neutral odour and taste • High gas permeability • Good adhesion As close to 100% contact as possible between the skin and Silicone ArmLiner is a fundamental requirement for a successful fitting; otherwise perspiration can condense into liquid. Reddening of the skin and allergic reactions caused by amino acids in perspiration are possible as a result. A precise plaster casting technique is therefore of particular importance to ensure that the benefits of the Silicone ArmLiner can be used to full advantage. In this Technical Information, the fabrication of atransradial prosthesis with a 14Y1 Ottobock Silicone ArmLiner with pin and lock is illustrated as an example. 2 Components 2.1 Silicone ArmLiner 14Y1 Silicone ArmLiner for use with 14A1 Lock Set. In the distal area, a threaded plate is integrated to screw in the 14A107 Pin. | Article no. | L | U1 | U2 | | --- | --- | --- | --- | | 14Y1=110 | 200 | 110 | 150 | | 14Y1=140 | 200 | 140 | 160 | | 14Y1=160 | 200 | 160 | 180 | | 14Y1=180 | 200 | 180 | 200 | | 14Y1=200 | 200 | 200 | 220 | | 14Y1=220 | 200 | 220 | 240 | 2 | Ottobock Fabrication of a Transradial Prosthesis with Ottobock Silicone ArmLiner 2.2 Lock and Accessories 1 2 3 4 5 6 14A1 Lock Set consisting of: (1) 14A110 Lock (2) 14A107 Pin (3) 14A108 Lamination Ring, including casting protector 14A111 Dummy Set consisting of: (4) 14A113 (5) 14A114 (6) 14A112 Pin Dummy with thread Pin Dummy without thread Shaped Dummy for lamination ring 2.3 Taking Measurements To select the size of the Silicone ArmLiner, the residual limb circumference has to be measured from the end of the residual limb. To determine the size of the Silicone ArmLiner required, deduct approx. 1 – 2 cm. Fabrication of a Transradial Prosthesis with Ottobock Silicone ArmLiner Ottobock | 3 3 Fabricating the Socket Tighten the 14A113 Pin Dummy with thread on the chosen 14Y1 Silicone ArmLiner. Turn the Silicone ArmLiner inside out or roll it up. Apply 640Z5 Plaster Insulating. Cream to the residual limb. Evenly unroll the Silicone ArmLiner onto the residual limb, avoiding the displacement of soft tissue. Important! The formation of wrinkles and air pockets between the skin and Silicone ArmLiner must be avoided! Under no circumstances should the Silicone ArmLiner be pulled up like a sock! 4 | Ottobock Fabrication of a Transradial Prosthesis with Ottobock Silicone ArmLiner Check the fit of the Silicone ArmLiner. The pin dummy with thread must be aligned in the axial direction of the residual limb. Apply 640Z5 Plaster Insulating Cream to the outside of the Silicone ArmLiner. Pull on a moistened 623T3 Perlon Stockinette. Keep the perlon stockinette tight with the help of a suspender. Bend the elbow at approx. 70°-90° and wrap, circularly and diagonally in turn, with 699G1 Elastic Plaster Bandage using even tension. Ensure that the elbow joint is free to bend. Also cover the base of the pin dummy with thread in plaster. Keep the elbow bent while the plaster sets. Note the specified position of the pin dummy with thread. Fabrication of a Transradial Prosthesis with Ottobock Silicone ArmLiner Ottobock | 5 Pull off the plaster negative after it has set. Clean the Silicone ArmLiner and residual limb with lukewarm water. Note: Do not

FAQs

Why is a silicone ArmLiner important for an upper limb prosthesis?

It improves wearer comfort, ensures good adhesion of the residual limb, and reduces frictional forces, supporting effective prosthesis fitting.

What silicone properties are highlighted as advantages?

Silicone is temperature resistant (-60 °C to +200 °C), resistant to water, perspiration and weather, has neutral odor and taste, offers high gas permeability, and supports good adhesion.

What key precautions must be taken when applying the Silicone ArmLiner during fabrication?

Wrinkles and air pockets between the skin and the ArmLiner must be avoided, and the ArmLiner should not be pulled up like a sock. The pin dummy alignment and solvent-free cleaning are also emphasized.

Sep 27, 2026

Uploaded by Genevieve