factors affecting aseptic failure of fixation after primary charnley total hip arthroplasty....
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![Page 1: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/1.jpg)
Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival
Analysis*
by SENEKI KOBAYASHI, KUNIO TAKAOKA, NAOTO SAITO, and KENJI HISA
J Bone Joint Surg AmVolume 79(11):1618-1627
November 1, 1997
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 2: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/2.jpg)
Fig. 1 Diagram showing the distribution of the femoral components according to the radiographic signs that were present at the latest follow-up examination. * = radiographic failure
of fixation.
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 3: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/3.jpg)
Fig. 2 Graph showing survival curves for the 293 acetabular components, with radiographic failure of fixation (A) and revision (B) as the end points.
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 4: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/4.jpg)
Fig. 3 Graph showing survival curves for the 293 femoral components, with radiographic failure of fixation (A) and revision (B) as the end points.
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 5: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/5.jpg)
Fig. 4 Graph showing the radiographic survival of the acetabular components in relation to the so-called biological classification of the osteoarthrosis2.
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 6: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/6.jpg)
Figs. 5-A, 5-B, and 5-C: Anteroposterior radiographs of the right hip of a woman who had a total hip arthroplasty because of hypertrophic osteoarthrosis when she was sixty-two years old.
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 7: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/7.jpg)
Fig. 5-B: Radiograph made at the time of discharge, showing a non-flanged socket that was cemented after removal of eburnated bone from the acetabular roof.
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 8: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/8.jpg)
Fig. 5-C: Twenty years postoperatively, the well fixed cemented socket has no demarcation.
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 9: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/9.jpg)
Figs. 6-A, 6-B, and 6-C: Anteroposterior radiographs of the right hip of a woman who had a total hip arthroplasty because of atrophic osteoarthrosis when she was sixty-two years old.
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 10: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/10.jpg)
Fig. 6-B: Radiograph made at the time of discharge, showing a flanged socket that was cemented after anchor holes were made in preserved eburnated bone.
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 11: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/11.jpg)
Fig. 6-C: Thirteen years postoperatively, the socket has migrated despite very little wear of the polyethylene (average rate, 0.01 millimeter per year).
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 12: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/12.jpg)
Fig. 7 Graph comparing the radiographic survival between the thirty-one sockets that had rapid wear of the polyethylene (R) and the 262 that did not have rapid wear (S).
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 13: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/13.jpg)
Fig. 8 Graph comparing the radiographic survival of the femoral components according to the canal-flare index34 (CFI).
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 14: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/14.jpg)
Fig. 9 Graph comparing the radiographic survival of the femoral components according to the average width of the canal (CW).
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 15: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/15.jpg)
Figs. 10-A, 10-B, and 10-C: Anteroposterior radiographs of the left hip of a woman who had a total hip arthroplasty because of normotrophic osteoarthrosis when she was sixty-two years old.
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 16: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/16.jpg)
Fig. 10-B: Radiograph made at the time of discharge.
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 17: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/17.jpg)
Fig. 10-C: Eleven years postoperatively, there is failure of fixation of the femoral component.
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 18: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/18.jpg)
Fig. 11 Graph comparing the rates of radiographic survival, with revision as the end point, between the thirty-one acetabular components that had rapid wear of the polyethylene (R) and
the 262 that did not have rapid wear (S).
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.
![Page 19: Factors Affecting Aseptic Failure of Fixation after Primary Charnley Total Hip Arthroplasty. Multivariate Survival Analysis* by SENEKI KOBAYASHI, KUNIO](https://reader035.vdocuments.us/reader035/viewer/2022062517/56649eaa5503460f94bafba7/html5/thumbnails/19.jpg)
Fig. 12 Graph comparing the rates of radiographic survival, with revision as the end point, for the femoral components according to the canal-flare index34 (CFI).
SENEKI KOBAYASHI et al. J Bone Joint Surg Am 1997;79:1618-1627
©1997 by The Journal of Bone and Joint Surgery, Inc.