Abstract
Total hip joint replacements were performed in the left hips of nine adult mongrel dogs with cementless fixation of the stem. The surface of the stem was of a so-called madreporique (ball-coated) structure. The studies 6 months after operation, with good clinical function of the implants, revealed interfaces of various diameters but never a direct ingrowth of bone. Bone formation could even be demonstrated between the balls. Alteration of load transfer yieled a reduction of cortical bone density, with intervening cancellous bone and formation of a secondary medullary cavity. The bone formation around the tip of the prothesis was never due to instability but seemed to transduce the load onto the distal cortical bone. For biological fixation it seems to be important for the implant to have structured surface such as the madreporique one.
| Translated title of the contribution | Micromorphological and microradiological investigations on healing of cementless femoral stems in hip joint replacement |
|---|---|
| Original language | German |
| Pages (from-to) | 528 |
| Number of pages | 1 |
| Journal | Langenbecks Archiv für Chirurgie |
| Volume | 364 |
| Issue number | 1 |
| DOIs | |
| State | Published - Dec 1984 |