On Dec. 18, 2020, the FDA approved the Osseoanchored Prostheses for the Rehabilitation of Amputees (OPRA) Implant System, the first implant system marketed in the U.S. for adults who have transfemoral�or above-the-knee�amputations and who have or are anticipated to have rehabilitation problems with, or cannot use, a conventional socket prosthesis.

The OPRA Implant System has been on the market under a humanitarian device exemption since 2015. The OPRA Implant System is manufactured by Integrum AB in M�lndal, Sweden.