Treatment of osteonecrosis of the femoral head by free vascularized fibular grafting: an analysis of surgical outcome and patient health status. - Louie, Brain E.; McKee, Michael D.; Richards, Robin R.; Mahoney, James L.; Waddell, James P.; Beaton, Dorcas E.; Schemitsch, Emil H.; Yoo, Daniel J. (Canadian Journal of Surgery, 1999)