The MEDPOR Pterional Implant, developed with Dr. Murali Guthikonda of the Detroit Medical Center, Wayne State University, was designed specifically to fill the hollow resulting after a pterional craniotomy during neurosurgical procedures. Originally, Dr. Guthikonda used the MEDPOR TF Implant for this application, (but felt that a smaller, more appropriately contoured implant would require less intraoperative sculpting and be easier and faster to utilize during the closing stages of his procedures.