The Queen of Pop Madonna is on crutches after bruising a bone in her foot from dancing in high-heeled shoes.

A spokesperson for the 55-year-old Hung Up singer told the New York Post newspaper: ''She bruised a bone in her foot from dancing in her high heels . . . she'll be fine and off crutches in a week.''

Madge recently came under fire for posting an Instagram snap of her 13-year-old son, Rocco Ritchie, clutching a bottle of 94-proof Bombay Sapphire gin.

The Vogue singer, who is known for her rigorous workout routines, will lead a cardio-based class at the opening of her Hard Candy Fitness in Toronto on February 11.