1. Grasp the operation indicatio reasonablely, raise obstetrics quality, cut down incidence rate of asphyxia neonatorum.

2. Objective To study the indicatio, method and clinical curative effect for treatment of senile intertrochanteric fractures with PFNA.

3. The major indicatio of subtotal hysterectomy were postpartum hemorrhage, uterine inertia and placental related factors.

4. Conclusion One-stage resection and anastomosis for left colonic acute obstruction is feasible after strict indicatio and appropriate operative management.

5. Conclusion: Telescope denture has broad application scope, the merit is emphasized, So long as grasp it's indicatio, good repair effect can be gained.