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Bioresorbable implants safe, effective in orbital fracture reconstruction

13 Aug 2017
60% out of 63,000 Malaysians aged 50 years and above who were blind had treatable conditions.

The use of bioresorbable implants appear to be safe and clinically effective in the reconstruction of orbital fractures, reports a recent study.

To assess the clinical effectiveness and safety of various bioresorbable implants in the repair of orbital fractures, researchers retrospectively reviewed patients who had undergone orbital fracture repair with bioresorbable implants in a single tertiary trauma centre from January 2005 to December 2014.

The main outcome measures were improvement in ocular motility, diplopia, enophthalmos and infraorbital hypoaesthesia, as well as complication rates.

In total, there were 94 patients and 98 orbits in this study.

The types of fractures included were as follows: orbital floor blow-out fractures (56.1 percent), zygomaticomaxillary complex fractures (20.4 percent), combined orbital floor and medial wall fractures (15.3 percent) and medial wall blow-out fractures (5.1 percent). For the implants, those evaluated were poly-L/DL-lactide implants (P[L/DL]LA) 85/15 (Rapidsorb), (P[L/DL]LA) 70/30 (PolyMax), polycaprolactone (Osteomesh) and (P[L/DL]LA) 70/30 (MacroPore).

A significant improvement was seen in ocular motility, diplopia, enophthalmos and infraorbital hypoaesthesia postoperatively at week 1, 1 month and 6 months (p<0.001). There was no significant difference between the various implants and types of fractures in postoperative outcome and complications.

Furthermore, late postoperative imaging at 15 to 24 months showed complete resorption of implants and features of neobone formation in all patients.

“Bioresorbable implants offer several advantages over permanent implants and serve as a useful alternative in the reconstruction of orbital fractures,” researchers said.

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