Calcar resorption beneath a well-fitting flanged femoral prosthesis

J Arthroplasty. 1991 Jun;6(2):147-50. doi: 10.1016/s0883-5403(11)80009-4.

Abstract

Forty-three of 51 Link SP hip prostheses inserted 4 years previous to this study were clinically and radiographically reviewed. All demonstrated bone resorption in excess of 2 mm under the collar, but this resorption was not progressive. No prosthesis had loosened. The collar of a prosthesis, even when securely cemented into the femur with a carefully matched neck cut, was decoupled from its functional position in all the reviewed cases at 4 years. Its only remaining function was to prevent subsidence within the cement mantle, should it ever become necessary to provide stability.

MeSH terms

  • Bone Cements
  • Bone Resorption / etiology*
  • Hip Joint / diagnostic imaging
  • Hip Prosthesis*
  • Humans
  • Prosthesis Design
  • Prosthesis Failure
  • Radiography
  • Stress, Mechanical

Substances

  • Bone Cements