A total of @ consecutive patients ( Robinson class B@ or B@ ) were randomly allocated into two groups ; intramedullary pin ( IMP ) group ( n = @ , mean age ; @ years , @ males @ % ) received Sonoma CRx Collarbone pin ( Sonoma , USA ) whereas locking midshaft superior plating ( MIPPO ) group ( n = @ , @ years , @ males ) patients received minimally invasive locking midshaft superior plating ( Acumed , USA ) .