Ended professional thesis for ankle joint substitution, connects with the spur bone and the upper slide aspect (10) the component which is formed connects with (4) and the tibia and the lower part slide aspect (7) the component which is formed has (3) and the intermediate part (5). As for the intermediate part (5) the tibia component (3) and the spur bone component (4) the slide aspect (7,10) with two slide aspects which operate mutually (15,16) it forms. In the frontal plane, as for the intermediate part (5) it is the wedge form which possesses the wedge angle of the range of 12 degrees from 1 times. (Figure 2)
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