1. 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.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. 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.

8. 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.

9. 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.

10. 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.

11. 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.

12. 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.

13. 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.

14. 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.

15. 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.

16. 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.

17. 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.

18. 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.

19. 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.