Conclusions Intraoral internal fixation on mandibular Angle and condyle fracture with a micro-angular screwdriver avoided facial incisions thoroughly it was of great significance to the patients.

This paper deals with the general calculation of fracture mechanics on the weld defects of a spherical tank. The additional bending stresses caused by both the angular distortion and the stagger toe.

Objective: To improve the surgical technique for reduction and internal fixation of radius head and radius neck fracture with angular displacement.