Figure 1From: Stem cell- and growth factor-based regenerative therapies for avascular necrosis of the femoral headIntraoperative fluoroscopy demonstrating the drilling prior to stem cell tricalcium phosphate matrix application. (A) A 3-mm K-wire is placed in the anterior portion of the necrosis and (B) overdrilled with a 10-mm cannulated drill. (C,D) The same procedure is repeated for the posterior part of the necrosis. Reprinted with permission from Schattauer [54].Back to article page