Scotland meet Macedonia on Saturday, and then Iceland four days later, in their opening matches on the way to a possible place at South Africa 2010.
Broadfoot has enjoyed an impressive start to the season and performed particularly well in Sunday's Old Firm derby, helping Rangers claim a 4-2 win at Celtic. The 24-year-old defender, who can play at fullback or centre-half, could now make his international debut.
Aberdeen goalkeeper Jamie Langfield has also been added to the squad as back-up for Craig Gordon and Allan McGregor, after Norwich City keeper David Marshall pulled out through injury. Rangers defender David Weir and Birmingham City forward Garry O'Connor have also been forced to withdraw.
Burley saw previous squads for friendlies against Croatia, Czech Republic and Northern Ireland hit by injuries, and had hoped to head into the crucial double-header with a clean bill of health.
McDonald's FIFA World Cup Predictor
Austria-France, Argentina-Paraguay and Chile-Brazil are among the matches on the opening round of the McDonald's FIFA World Cup Predictor. If you haven't already, be sure to sign up and take a shot at winning a fanstastic trip to South Africa 2010.