Similar to the old-ACVR website, emails to the general membership (diplomates and residents) can be sent to all
Visit https://community.acvr.org and post a general discussion topic for the moderated ACVR Community called Discourse. Want to target a specific group of ACVR members? Look for a group that fits your needs. Please keep in mind that this community is for items pertaining to the ACVR, not for advertisements. or topics meant to spark discussion and response from members.
Discourse has a wealth of interesting cases, hot topics, or equipment/best practices that will interest you, check it out!