Home » Bones » Femur » Proximal Inter-Locking for Synthes Nail Proximal Inter-Locking for Synthes Nail July 22, 2020 by Data Trace Editor Intramedullary Nailing of Femoral Shaft Fractures. Part I. Decision-making Errors with Interlocking Fixation. Intramedullary nailing of femoral shaft fractures. Part II: Fracture-healing with static interlocking fixation. Intramedullary nailing of femoral shaft fractures. Part III: Long-term effects of static interlocking fixation. Interlocking intramedullary nailing in femoral shaft fractures. A report of forty-eight cases. Cephalomedullary screws as the standard proximal locking screws for nailing femoral shaft fractures.