Persistence of indentation with bioabsorbable poly-L/D-lactide versus silicone sponge scleral buckling implants.
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).
Länsman
Satu M
SM
Department of Ophthalmology, Oulu University Hospital, Oulu, Finland. satu.lansman@oulu.fi
Karttunen
Ari I
AI
Hirvelä
Heli K
HK
Palosaari
J Tapani
JT
Kellomäki
Minna
M
Ellä
Ville
V
Ohtonen
Pasi P
PP
Törmälä
Pertti
P
Waris
Timo H
TH
Ashammakhi
Nureddin A
NA
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
D011091:Polyesters; D012826:Silicone Elastomers; C033616:poly(lactide)