Fig. 4

Preoperative and postoperative House-Brackmann (H-B) grade of 8 cases injured at our center and 37 cases transferred. a For 8 patients injured at our center, seven (87.5%) ranked H-B grade V and one (12.5%) ranked H-B VI before revision surgery; seven (87.5%) received decompression and one (12.5%) received anastomosis; two (25.0%) recovered to H-B grade I, four (50.0%) recovered to H-B II, and the other two (25.0%) recovered to H-B III. b For 37 patients transferred, thirteen (35.1%) ranked H-B grade V and 24 (64.9%) ranked H-B VI preoperatively; fourteen (37.8%) received decompression, nineteen (51.4%) received graft and one (12.5%) received anastomosis; final postoperative grade ranked from H-B grade I to grade V, with H-B I 6 (16.2%) cases, H-B II 6 (16.2%) cases, H-B III 18 (48.6%) cases, H-B IV 5 (13.5%) cases and H-B V 2 (5.4%) cases