title: Persistence of indentation with bioabsorbable poly-L/D-lactide versus silicone sponge scleral buckling implants.
abstract: OBJECTIVE
  To measure the amount and duration of indentation depth achieved with biodegradable poly-L/D-lactide 96/4 (PLA96) and silicone sponge implants.
  
  
  METHODS
  Thirty rabbits underwent a scleral buckling procedure. A PLA96 buckling implant was used in 15 rabbits and a silicone sponge buckling implant was in 15 rabbits. A circumferential scleral buckling implant was sutured episclerally on the left eye of each rabbit, just temporal to the superior rectus muscle and 7 mm posterior to the limbus. Computed tomography was performed at 1 week, 3 months, and 5 months after surgery.
  
  
  RESULTS
  The PLA96 buckling implant (implant diameter, 3-3.5 mm) used in this study created lower indentation than the silicone sponge implant (implant diameter, 4 mm). The indentation created by the PLA96 implant decreased over time compared with that created by the silicone implant. There were no complications related to either kind of implant.
  
  
  CONCLUSIONS
  Both the silicone sponge implant and the PLA96 implant caused indentation that decreased in a comparable manner over the follow-up period (5 months).
authors.affiliation: Department of Ophthalmology, Oulu University Hospital, Oulu, Finland. satu.lansman@oulu.fi
authors.forename: Satu M
authors.initials: SM
authors.lastname: Länsman
authors.forename: Ari I
authors.initials: AI
authors.lastname: Karttunen
authors.forename: Heli K
authors.initials: HK
authors.lastname: Hirvelä
authors.forename: J Tapani
authors.initials: JT
authors.lastname: Palosaari
authors.forename: Minna
authors.initials: M
authors.lastname: Kellomäki
authors.forename: Ville
authors.initials: V
authors.lastname: Ellä
authors.forename: Pasi P
authors.initials: PP
authors.lastname: Ohtonen
authors.forename: Pertti
authors.initials: P
authors.lastname: Törmälä
authors.forename: Timo H
authors.initials: TH
authors.lastname: Waris
authors.forename: Nureddin A
authors.initials: NA
authors.lastname: Ashammakhi
mesh_terms: D020341:Absorbable Implants; D000818:Animals; D008297:Male; D009799:Ocular Physiological Phenomena; D009915:Orbit / Q000000981:diagnostic imaging; D011091:Polyesters; D011817:Rabbits; D012163:Retinal Detachment / Q000601:surgery; D012590:Sclera / Q000601:surgery; D012591:Scleral Buckling / Q000295:instrumentation*; D012826:Silicone Elastomers; D015503:Surgical Sponges; D013536:Suture Techniques; D013997:Time Factors; D014057:Tomography, X-Ray Computed
chemical_list: D011091:Polyesters; D012826:Silicone Elastomers; C033616:poly(lactide)