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    • 5. 发明申请
    • LOWER ARM ARTHROPLASTY
    • 下臂肌肉
    • WO2008026135A1
    • 2008-03-06
    • PCT/IB2007/053371
    • 2007-08-23
    • DE VILLIERS, Malan
    • DE VILLIERS, Malan
    • A61F2/38A61F2/42
    • A61F2/4261A61F2/3804A61F2002/30332A61F2002/30662A61F2002/30663A61F2002/30881A61F2002/30883A61F2002/3809A61F2002/3827A61F2002/4269A61F2220/0033A61F2310/00023A61F2310/00029A61F2310/0088
    • The invention concerns a lower arm arthroplasty, possibly a proximal radial head replacement or a distal radio-ulnar arthroplasty. The arthroplasty includes an intermedullary stem (12, 52) having a first end for anchorage in a hole in a forearm bone and a second end (14, 60). The arthroplasty also has a head (18, 55) with an external, curved surface (44,46, 66) for articulation relative to another bone (53). Another component of the arthroplasty is an intermediate member (16, 54) which locates between the head and the second end of the stem and is enagable with those components. The intermediate member is engagable with at least the stem in an articulating manner which allows the head to pivot relative to the stem through a limited range of angles. In the preferred embodiment, the intermediate member engages both the head and the stem in articulating manner.
    • 本发明涉及下臂关节置换术,可能是近端桡骨头置换术或远端放射性尺骨关节置换术。 关节成形术包括具有用于锚固在前臂骨中的孔中的第一端和第二端(14,60)的中间杆(12,52)。 关节成形术还具有头部(18,55),其具有用于相对于另一骨骼(53)铰接的外部弯曲表面(44,46,66)。 关节置换术的另一个组成部分是一个中间部件(16,54),它位于头部和头部的第二个末端之间,并且可以被这些部件所困扰。 中间构件至少可以以铰接方式接合杆,这允许头部相对于杆在有限的角度范围内枢转。 在优选实施例中,中间构件以铰接方式接合头部和杆部。