Wheelchair Molded Mag Wheels Guide

Wheelchair Molded Mag Wheels Guide

These wheels are made of molded plastic or a composite and are commonly referred to as "Mag" or "Composite" or "Molded" wheels. They have a small number of wide molded spokes that are an integral part of the wheel and cannot be replaced or repaired when broken.

These positioning accessories are most often used to increase the user's trunk stability and balance. They can also serve as a tactile reminder. When the user comes in contact with the device they know that they are out of position and can adjust their position or request assistance. Laterals are sometimes used in an effort to control spinal scoliosis ("S" curve of the spine). This tactic may work in those cases were the scoliosis is flexible and can easily be reduced. In cases where the scoliosis is rigid, laterals may cause discomfort and tissue damage (wounds). This is especially true if the lateral is placed on the apex (high point) of the spinal curvature. That brings us nicely to the issue of placement.

If the trunk can be placed in an upright neutral sitting position, but the user can not maintain this position, then the laterals can be placed opposite each other on each side of the trunk. This will add the needed external support to hold the user in position. Many users and professionals think that the laterals have to be placed exactly opposite each other on the trunk. This is not true, and in certain cases may result in poor outcomes and in discomfort to the user. In those cases where you are dealing with a spinal curvature you need to consider uneven or oblique placement of the laterals. One lateral should be placed just under the apex of the spinal curve. The second lateral should be placed on the opposite side of the trunk and above the opposing one. This will set up the proper dynamics for reducing the curve (if flexible) and supporting the trunk.

In order to work well these devices must make contact with the trunk. If they do not make contact with the user there will be no support. If they are too tight, the user may have a problem with breathing. If they are placed too low, support is lost and the trunk may "lean" over the laterals. If placed too high they may impinge on the axilla (armpit) and cause damage to the brachial plexus, irritate the surrounding skin, and restrict shoulder and arm movement.

Advantages of Molded Mag Wheels

  • The molded wheels are said to be more durable and require less maintenance.

Disadvantages of Molded Mag Wheels

  • Molded wheels are heavier than spoked wheels.
  • They are not as flexible as spoked wheels so users may experience a rougher or harder ride.
  • The lack of flexibility makes them prone to cracking on hard impact.

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