Purpose and area of application
The prostheses of the femoral head are designed to restore supporting and moving functions of man’s lower limbs in surgical treatment of diseases and consequences of hip joint injuries.
Design features
Endoprosthesis is a metal polymer construction and consists of:
- acetabular component head made of thermoplastic polymer for cement-free fixing;
- hip component-limb made of high-strength metal alloy with porous coating and head with diameter of 28 mm;
- neck, which connect the limb with the head and is made in the form of a taper (diam.-12/14 mm, located relatively the limb at 145°).
In frontal and sagittal planes the limb has a conical form thus ensuring the safe primary fixation in the bone marrow canal. There are parallel conical ribs on the front and rear proximal surfaces which wedge themselves in the spongy bone of the hip proximal section and provide the rotary stability for the limb. The secondary fixation of the endoprosthesis is achieved through bone tissue growing into its porous coating.
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