A hip prosthesis is disclosed which employs a number of cement spacers located on the surface of the stem of the prosthesis immediately below a collar which makes direct and parallel contact with calcar bone when a stem of the prosthesis is seated in medullary canal of the patient. The collar is constructed to provide even stress distribution to the bone.
申请公布号
US5314489(A)
申请公布日期
1994.05.24
申请号
US19920973198
申请日期
1992.11.06
申请人
JOHNSON & JOHNSON ORTHOPAEDICS, INC.
发明人
HOFFMAN, WILLIAM H.;SCOTT, RICHARD D.;RAND, JAMES A.