TY - JOUR
T1 - The effect of anteversion on femoral component stability assessed by radiostereometric analysis
AU - Gill, H. S.
AU - Alfaro-Adrian, J.
AU - Alfaro-Adrian, C.
AU - McLardy-Smith, P.
AU - Murray, D. W.
PY - 2002
Y1 - 2002
N2 - Internal rotation of a femoral stem within the femur, with posterior migration of the femoral head (PHM) relative to the femur, is an important mode of failure. The relationship between anteversion and rotational stability for the Exeter (Howmedica International Ltd, London, UK) and Charnley Elite (DePuy International Ltd, Leeds, UK) stems was investigated using radiostereometric analysis (RSA). For the Elite, there was a significant (P=.01) correlation between anteversion and PHM, whereas for the Exeter, there was no significant correlation (P=.6). Increasing anteversion of the Elite was associated with decreasing PHM and increased stability. Of stems, 20% of the Elite and none of the Exeter were classified as having reduced rotational stability because their PHM was >2 SDs from the mean. All reduced rotational stability implants had anteversion substantially
AB - Internal rotation of a femoral stem within the femur, with posterior migration of the femoral head (PHM) relative to the femur, is an important mode of failure. The relationship between anteversion and rotational stability for the Exeter (Howmedica International Ltd, London, UK) and Charnley Elite (DePuy International Ltd, Leeds, UK) stems was investigated using radiostereometric analysis (RSA). For the Elite, there was a significant (P=.01) correlation between anteversion and PHM, whereas for the Exeter, there was no significant correlation (P=.6). Increasing anteversion of the Elite was associated with decreasing PHM and increased stability. Of stems, 20% of the Elite and none of the Exeter were classified as having reduced rotational stability because their PHM was >2 SDs from the mean. All reduced rotational stability implants had anteversion substantially
UR - http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=12478509
UR - http://dx.doi.org/10.1054/arth.2002.34531
U2 - 10.1054/arth.2002.34531
DO - 10.1054/arth.2002.34531
M3 - Article
SN - 0883-5403
VL - 17
SP - 997
EP - 1005
JO - Journal of Arthroplasty
JF - Journal of Arthroplasty
IS - 8
ER -