Edinburgh Head Coach Michael Bradley believes the former Puma will provide valuable support in the build-up to the crucial Heineken Cup quarter-final against Toulouse at Murrayfield on Saturday, 7 April and for the rest of the season.
"Ulises is a prop of considerable experience, having been capped for one of the set-piece powerhouses of world rugby.
Leo Ulises Gamboa European Record
"Edinburgh Rugby provide more players [nine] to the Scotland national team than any other club and, while it's great for the players, the club and its fans to have such strong international representation, the availability of Ulises is welcomed at a time where we look to reach a place in the RaboDirect Pro12 that reflects our performances in the Heineken Cup." said Bradley
Gamboa, who has been capped eight times for Argentina, is available for Edinburgh's home match against Ospreys on Friday and will also be added to the squad for the Heineken Cup quarter-final against Toulouse in April.
After the completion of the Pool stages, Clubs involved in the knock-out stages may nominate three additional players. One of these players must be qualified to play in a front row position and the other two players can play in
any position. These additional players must be fully and properly registered by Thursday 22 March, 2012. Clubs must ensure that these players have not been nominated in a match squad with another Club for the Heineken Cup or Amlin
Challenge Cup tournaments during the current season.