Endoprosthetic elbow joints

Details Endoprosthetic elbow joints Endoprosthetic elbow joints

1979-02-28

1980-09-30

Crowder, Clifford D.

Surgery

Truss

Pad

128 92C, A61F 103

Patent

active

042246954

ABSTRACT:
An endoprosthetic elbow joint in the form of a one-piece endoprosthesis having at least one hinge joint provided with anchoring shanks of which one is to be connected to the humerus and of which the other is to be connected to the ulna of a patient, the axis of the hinge joint taking the place of the flexing and extending axis of the natural arm. According to the invention, the end of the hinge joint on the side on which the patient's radius will be situated continues into a rotary humeroradial joint which is rigidly connected to the hinge joint. The rotary joint has at least two degrees of freedom, one of which allows pivoting movement of the joint by a shank thereof for anchoring in the radius about the flexing and extending axis of the hinge joint and of which the other allows rotary movement by the shank about the longitudinal axis of the patient's radius. Advantageously, the rotary joint has a further degree of freedom which allows axial movement by the shank of the rotary joint along the longitudinal axis of the patient's radius.

REFERENCES:
patent: 3919725 (1975-11-01), Swanson et al.
patent: 4038704 (1977-08-01), Ring
patent: 4057858 (1977-11-01), Helfet
patent: 4079469 (1978-03-01), Wadsworth
patent: 4129902 (1978-12-01), Harmon

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