Previous studies have suggested that femoral component positioning in resurfacing arthroplasty may affect strains in the femoral neck that could lead to decreased implant longevity, A strain gaged, Sawbones® model was used to determine the femoral neck strains for a variety of resurfacing head translations and angulations. We found that head positions affected strain distributions, most positions leading to increased neck strains, often over 100%, with the exception being a varus head position where the superior neck strains decreased over 50%. Although the clinical meaning of these findings is unclear, it could be of concern for stress-shielding or fatigue fracture of the femoral neck.
|Original language||English (US)|
|Number of pages||6|
|Journal||Bulletin of the NYU Hospital for Joint Diseases|
|State||Published - 2009|
ASJC Scopus subject areas
- Orthopedics and Sports Medicine