Patents Assigned to Ronald A. Johnson
  • Fracture fixation by cerclage utilizing cortical bone tack and pull-out tension device
    Patent number: 4146022
    Abstract: An orthopedic implant for use in the internal fixation of a bone fracture by wiring, a method of fracture fixation by wiring which avoids bone resorption, and means for embedding the implant in the cortex of a bone adjacent the fracture site. The implant comprises a cylindrical body portion, a plurality of pointed pins at one end of the body portion, a circular bore through the body portion through which a wire may be passed, and at least one groove on the surface of the body portion in which a wire may be accommodated.
    Type: Grant
    Filed: November 16, 1977
    Date of Patent: March 27, 1979
    Assignee: Ronald A. Johnson
    Inventors: Ronald A. Johnson, Horst R. Hickmann