Biopolymers against knee pain

Readingtime 1 minutes

The insertion of an artificial knee joint is one of the most common operations worldwide. Patients often complain of discomfort for a long time after the procedure and are dependent on strong painkillers such as opioids during the acute phase as well as the subsequent recovery process. However, these painkillers have side effects, including a high risk of dependence. This is where the pain implants from the California startup Allay Therapeutics, in which Evonik has been investing since 2022, come into play. These coin-sized triangular implants are placed around the artificial knee joint at the conclusion of an operation. They don’t appear in X-ray images. Thanks to the novel structure of biodegradable polymers from Evonik and the use of an opioid-free local anesthetic, the implants relieve pain for up to three weeks and can subsequently be easily metabolized by the body.

Photos: Getty Images

Hands under nylon structureVideo

Tissue Engineering

Effective Tissue Repair

At the Tissue Engineering Project House, researchers are working to develop materials for artificial tissue.


Bacteria that heal wounds

The biotech company JeNaCell produces biosynthetic cellulose for the effective treatment of injuries.

neck with spineVideo


Implants from the 3D printer

Evonik is investing in the Chinese 3D printing specialist Meditool.

Pharma Polymers

Healing bones with polymers

The Medical Devices Project House is developing materials that support bone healing and make follow-up operations unnecessary.

ELEMENTS Newsletter
Get fascinating insights into the research Evonik is conducting, and its social relevance, by subscribing to our free newsletter.