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What type of plastic are orthotics made of?

Asked 2 years ago

Hosea Machio

Monday, January 24, 2022

Orthotists and prosthetists prefer a variety of sheet plastics, including Polypropylene, Kydex, and Copolymer Polypropylene, with Polypropylene being the most extensively used and acceptable. Polypropylene, one of the toughest but most formable sheet plastics available, may be readily machined or thermoformed and formed to meet the specific demands of each patient. Copolymer Polypropylene is somewhat more flexible than regular grade Polypropylene, and Kydex is a good reinforcing material over soft plastic foam, making it ideal for orthotic device fabrication.

Orthoplast is perhaps more commonly used in orthotics than any other sheet plastic for making pre-fabricated orthotics. This substance appeals to occupational therapists, orthopedic technicians, and physicians since it may be applied directly to the patient, eliminating the need for a negative impressions. When requested to make orthoses for the treatment of fractures, orthotists will frequently use this material as it is easier to mold.

Ortholen is also used. The most frequent use for ortholen is in the posterior leaf spring type AFO, which is usually used when weak dorsiflexors coexist with active plantarflexors. Durability at the posterior section of the orthosis is questioned by some practitioners who, therefore, prefer not to use this plastic. Subortholen is a new material, which is reported to be more durable than ortholen.

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