FIELD: medical engineering. SUBSTANCE: this endoprosthesis incorporates central cuboid portion having angular groove in one base that makes angle reverse to angle of finger joint flexion. Opposite base has angular grooves opposing first groove and having common rib disposed in same plane with rib of first groove. EFFECT: broader range of functional capabilities and lower rate of traumatism in surrounding soft tissues and capsular-ligamentous system at transverse loads imposed on articulation making torsional effort in post-operative period. 2 dwg
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