title: The value of ultrasound-assisted pinned resorbable osteosynthesis for cranial vault remodelling in craniosynostosis.
abstract: Resorbable osteosynthesis is a widespread tool in craniofacial surgery, however only a limited number of studies have focused on ultrasound-assisted pinned resorbable systems in the treatment of craniosynostosis. Thirty-eight children with various types of craniosynostosis including scaphocephaly, trigonocephaly, anterior and posterior plagiocephaly were treated using the Sonic Welding resorbable osteosynthesis system. All patients were evaluated for operation time, stability of the surgical results, rate of local infections and visibility or palpability of the osteosynthesis material in the follow-up ranging from 15 to 21 month. Mean operation time was not significantly higher compared to conventional osteosynthesis material and all remodelled cranial vaults showed immediate stability. Only one patient showed signs of an inflammatory skin reaction, which recovered spontaneously. The number of palpable or visible plates, respectively, increased during the first months with a maximum at 12 months (34 (89%) plates palpable, 26 (68%) plates visible). After this time point, the number decreased continuously until the end of the follow-up period at 21 months when 3 (20%) plates were palpable, 0 (0%) plates were visible). Ultrasound-assisted pinned resorbable systems seem to be a promising tool in craniofacial surgery providing a timesaving and stable osteosynthesis. An initial swelling of the plates during the first 12 months before the complete degradation might result in a palpable and visible bulge.
authors.affiliation: Department of Oral and Maxillofacial Surgery (Head: Hoffmann Juergen MD, DMD), University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Freudlsperger
authors.affiliation: Department of Oral and Maxillofacial Surgery (Head: Hoffmann Juergen MD, DMD), University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
authors.forename: Gregor
authors.initials: G
authors.lastname: Castrillon-Oberndorfer
authors.affiliation: Department of Neurosurgery (Head: Unterberg Andreas MD), University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
authors.forename: Heidi
authors.initials: H
authors.lastname: Baechli
authors.affiliation: Department of Oral and Maxillofacial Surgery (Head: Hoffmann Juergen MD, DMD), University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
authors.forename: Juergen
authors.initials: J
authors.lastname: Hoffmann
authors.affiliation: Department of Oral and Maxillofacial Surgery (Head: Hoffmann Juergen MD, DMD), University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany.
authors.forename: Christian
authors.initials: C
authors.lastname: Mertens
authors.affiliation: Department of Oral and Maxillofacial Surgery (Head: Hoffmann Juergen MD, DMD), University Hospital Heidelberg, Im Neuenheimer Feld 400, 69120 Heidelberg, Germany. Electronic address: Michael.engel@med.uni-heidelberg.de.
authors.forename: Michael
authors.initials: M
authors.lastname: Engel
mesh_terms: D020341:Absorbable Implants; D001858:Bone Nails; D001860:Bone Plates; D003398:Craniosynostoses / Q000601:surgery*; D003872:Dermatitis / Q000209:etiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008297:Male; D061646:Operative Time; D010173:Palpation; D011091:Polyesters / Q000737:chemistry; D019651:Plastic Surgery Procedures / Q000295:instrumentation* / Q000379:methods; D012189:Retrospective Studies; D013526:Surgical Mesh; D013530:Surgical Wound Infection / Q000209:etiology; D014465:Ultrasonics; D014896:Welding / Q000379:methods
chemical_list: D011091:Polyesters; C033616:poly(lactide)
keywords: Craniofacial surgery; Craniosynostosis; Resorbable material; Ultrasound-assisted pinned resorbable osteosynthesis