Figure 2From: Comparison of our self-designed rotary self-locking intramedullary nail and interlocking intramedullary nail in the treatment of long bone fracturesAnterograde and retrograde fixation procedure for humeral fractures. Anterograde fixation (A1–C1); retrograde fixation (A2–C2). A1 incision, B1 the entry point for the nail, C1 main nail and locking tag screwing. A2 incision, B2 the entry point for the nail, C2 the tip of main nail.Back to article page