US Patent 11173043 Spinal interbody implants

Spinal interbody fusion implants for use in posterior lumbar interbody fusions (PLIF), anterior lumbar interbody fusions (ALIF), transforaminal lumbar interbody fusions (TLIF) and transpsoas interbody fusions (DLIF), each of the implants including a 3-D printed titanium frame having meshed sidewalls, open top and bottom faces and a selectively closeable back plate for enclosing a posterior end of the frame. A machined, acid treated allograft bone graft is contained within the frame, the bone graft having a window for containing a biomaterial, anti-migration teeth and a ridge configured to mate with a slot within the frame for locking the graft in the frame.