title: Anchoring of methylmethacrylate filler to the calvarium--technical note.
abstract: Implanted methylmethacrylate may be unexpectedly displaced due to poor adherence to the bone. We developed a simple technique to fix the material plugging the burr holes for use primarily in cosmetically important areas. At the closure of craniotomy, 2-3 small drill holes are made at the rim of the craniotomy burr hole. To address cranial defects in the pterional region, small holes are placed on the bone surface around the key burr hole. The holes extend into the diploic layer and have no parallel relationship. After fixation of the bone flap, a methylmethacrylate filler mixture is manually plugged into the burr hole and pushed into the small holes, thereby forming horns for secure fixation. None among over 100 patients developed an objectionable bulge attributable to displacement of the filler. Our technique requires no special instruments or materials and decreases the risk of cosmetic problems.
authors.affiliation: Department of Neurosurgery, Yokohama Stroke and Brain Center, Yokohama, Kanagawa, Japan. Satoru4756@aol.com
authors.forename: Satoru
authors.initials: S
authors.lastname: Shimizu
authors.forename: Koji
authors.initials: K
authors.lastname: Kondo
authors.forename: Tomoya
authors.initials: T
authors.lastname: Yamazaki
authors.forename: Kenji
authors.initials: K
authors.lastname: Nakayama
authors.forename: Isao
authors.initials: I
authors.lastname: Yamamoto
authors.forename: Kiyotaka
authors.initials: K
authors.lastname: Fujii
mesh_terms: D001843:Bone Cements / Q000009:adverse effects / Q000737:chemistry / Q000627:therapeutic use*; D003399:Craniotomy / Q000009:adverse effects / Q000379:methods*; D006801:Humans; D020366:Methylmethacrylate / Q000009:adverse effects / Q000737:chemistry / Q000627:therapeutic use*; D011183:Postoperative Complications / Q000209:etiology / Q000503:physiopathology / Q000517:prevention & control*; D011859:Radiography; D019651:Plastic Surgery Procedures / Q000379:methods*; D012886:Skull / Q000033:anatomy & histology / Q000000981:diagnostic imaging / Q000601:surgery*
chemical_list: D001843:Bone Cements; D020366:Methylmethacrylate