TY - JOUR
T1 - Femoral component positioning in resurfacing arthroplasty
T2 - Effects on cortical strains
AU - Kummer, Frederick J.
AU - Pereira, Gavin Caesar
AU - Schachter, Aaron K.
AU - Jaffe, William L.
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
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M3 - Article
C2 - 20001936
AN - SCOPUS:74049099127
VL - 67
SP - 341
EP - 346
JO - Bulletin of the Hospital for Joint Disease (2013)
JF - Bulletin of the Hospital for Joint Disease (2013)
SN - 2328-4633
IS - 4
ER -