Establishment Labs gains on US FDA approval for more Motiva implant sizes

** Shares of Establishment Labs ESTA.O rise 1.5% to $65 premarket

** ESTA says FDA approves 28 additional sizes of co's Motiva breast implants for US market

** New sizes include implants as small as 105 cc and will be commercially available before year-end

** BTIG says expanded range could open up about 10% of augmentation market that co was not previously serving

** Brokerage sees approval as an important catalyst that could boost surgeon adoption and US market share over time

** As of last close, stock down 12.1% YTD