an expandable medical implant is provided with an implantable cage body . the proximal and distal ends of the cage body may each be provided with a tapered or cam portion . the implant may further include a proximal flexure , a distal flexure , a proximal plug member having a tapered portion configured to mate with the tapered portion of the proximal end of the cage body , and a distal plug member having a tapered portion configured to mate with the tapered portion of the distal end of the cage body . the proximal plug member may be configured to move longitudinally such that the distal flexure moves and the circumference of the proximal end of the cage body resiliently expands . the distal plug member may be configured to move longitudinally such that the proximal flexure moves and the circumference of the distal end of the cage body resiliently expands . methods are also disclosed .