JOHANNESBURG, SOUTH AFRICA - OCTOBER 20: Dwaine Pretorius of the Lions celebrates the wicket of Andrew Gale of Yorkshire during the Champions League Twenty20 match between Highveld Lions and Yorkshire Carnegie at Bidvest Wanderers Stadium on October 20, 2012 in Johannesburg, South Africa. (Photo by Duif du Toit / Gallo Images/Getty Images)

South Africa have called up uncapped all-rounder Dwaine Pretorius to their squad for the second and third Tests against Australia following the injury to Dale Steyn.

Steyn will likely missĀ at least six months with a shoulder injury he suffered when bowling on the second day of the opening Test in Perth.

With the paceman being ruled out of the series, the Proteas went for an all-rounder rather than a like-for-like replacement, although given Pretorius' recent form the decision to bring him into the squad looked like an easy one.

The 27-year-old plays for the Lions in domestic cricket in South Africa, but has tasted international cricket before, playing three ODI matches against Ireland and Australia in September.

In the first three rounds of the Sunfoil Series - South Africa's first-class competition - Pretorius made scores of 87,80,97,28 and 72. In a game against the Warriors, he also took 6-81 in a single innings.

Over his career Pretorius has played 36 first-class matches and taken 115 wickets at an average of 22.27, and also has 1963 first-class runs at an average of 43.62 with four centuries.