Fig. 7

(A) Preoperative pelvic anterior posterior radiographs of femoral neck fracture (B) FNS combined with rhBMP-2 postoperative imaging radiograph measurement of (g) and (h) values (C) Comparison of the radiographs of the injured and healthy sides. Femoral neck shortening of FNS patients at the first and last postoperative follow-up. Femoral offset of FNS patients at the first and last postoperative follow-ups, CCD angle of FNS patients at the first and last postoperative follow-up. (C) In patients with FNS combined with rhBMP, there was no significant difference in femoral neck shortening at the last follow-up compared with that of the healthy side (P = 0.689), and there was no significant difference in femoral eccentricity between the first and last follow-up after surgery (P = 0.736).