title: Clinical application of biodegradable rib connecting pins in thoracotomy.
abstract: BACKGROUND
  To assess the usefulness in rib reconstruction of biodegradable connecting pins made of polylactide (PLA), PLA rib pins were compared with conventional non-absorbent aluminous ceramic rib pins (alumina rib pins) in terms of their ability for fixing and healing of cut ribs in thoracic surgery.
  
  
  METHODS
  There were 13 cases of rib fixation after thoracotomy using PLA rib pins and 11 cases using alumina rib pins, all of which were inserted into the medulla of the stump of the ribs that had been cut at thoracotomy to secure a larger surgical field. The observation period was 6 months after the operation.
  
  
  RESULTS
  The degree of vertical shift of the ribs connected with PLA rib pins was significantly reduced compared with the degree using alumina rib pins. In chest radiographs clear zones around the pins, indicating a delay in bone neogenesis, were observed frequently around the alumina rib pins but were absent around the PLA rib pins. Osteosynthesis using PLA rib pins was significantly more favorable than with alumina rib pins.
  
  
  CONCLUSIONS
  These results demonstrated that the PLA rib pin was superior to the alumina rib pin for fixing and healing of the cut rib.
authors.affiliation: Department of Thoracic Surgery, Faculty of Medicine, Kyoto University, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Hirata
authors.forename: T
authors.initials: T
authors.lastname: Fukuse
authors.forename: H
authors.initials: H
authors.lastname: Mizuno
authors.forename: S
authors.initials: S
authors.lastname: Hitomi
authors.forename: H
authors.initials: H
authors.lastname: Wada
mesh_terms: D000328:Adult; D000368:Aged; D000537:Aluminum Oxide; D001673:Biodegradation, Environmental; D001858:Bone Nails; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D011091:Polyesters; D011183:Postoperative Complications / Q000000981:diagnostic imaging; D011859:Radiography; D012272:Ribs / Q000000981:diagnostic imaging / Q000601:surgery*; D013908:Thoracotomy / Q000295:instrumentation*; D014945:Wound Healing / Q000502:physiology
chemical_list: D011091:Polyesters; C033616:poly(lactide); D000537:Aluminum Oxide