The cure of fracture in the Condylus humeri and Suparachondy in children using the Fragment fixation pin;

Fragment fixation pin internal fixation for ankle fracture;

Treatment of scaphoid fracture by autospecific ulna bone nail;

Internal fixation treatment of flail chest with absorbable rib-connecting-pins;

Object:To explore the entering spot,the length,the diameter and the direction of the iliac screw in the lumbopelvic fixation operations.

Micro-trauma technique on treating sacroiliac joint dislocation by sacroiliac screws with surgery navigation system and intra-operative 3D imaging system;