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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 Am Volume 79(11):1618-1627 November 1, 1997 ©1997 by The Journal of Bone and Joint Surgery, Inc.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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