For the first purpose the Polarcup is perfectly suitable for fractures of the upper extremity of the femur or fractures of the acetabulum because of the anti-dislocation character of this cup.

The fracture of the upper extremity of the femur in adults and more specifically in elderly people is the most common trauma pathology. About 50 000 a year in France on a steady increase despite the prevention efforts.

Conservative treatment has little place except some fractures of the femoral neck in coxa vara Garden 1 stable.

Osteosynthesis is recommended for femoral per and under trochanteric fractures

The cephalic or bipolar prosthesis for femoral neck fractures in low-active individuals.

Finally the total hip prosthesis for people still active. The double mobility cup is recommended for its stability.

The total hip arthroplastie is very useful also for the fractures of the acetabulum in the elderly.