The applications of the bi-planar navigation robot system in tibia intramedullary nailing,femur intramedullary nailing,femoral neck cannulated screw and sacro-iliac screw are also introduced in terms of workspace,projecti.

Treatment of elderly intertrochanteric fractures with dynamic hip screw plus femoral neck anti-revolved screw

[Objective] To develop the axial controlled intramedullary nail of the femoral neck (ACINFN) in treatment of femoral peritrochanteric fractures and evaluate the effects of clinical application.

Characters of intra-osteal venous angioarchitecture of femoral head and cervix and its potential significance;

Imaging features of herniation pits of the femoral neck;

Measurement method & principium analysis of the bending deformation capacity of cortical & cancellous bone at femoral neck;

Bipolar artificial femoral head replacement for treatment of elderly and high risk patients with severe displaced femoral neck fracture at first stage;

Objective To explore the clinical significance of the anterior approach hollow screw fixation in the treatment of odontoid fracture in type Ⅱ.