Abstract
Introduction: A retrospective study of the clinical and radiographic results of the Mallory-Head total hip arthroplasty was conducted.
Materials and Methods: Sixty-seven patients (76 hips) with a mean age of 50 years who had Mallory-Head total hip arthroplasty were studied. The mean follow-up period was 10.1 years (9–13years).
Results: Excellent or good clinical results were found in 64 patients. Minimal thigh pain was found in 3 patients (4.4%). Seventy-one hips (93.4%) showed fixation by bony ingrowth and three (3.9%) showed the stable fibrous fixation. Bony on and ingrowth was also observed in 16 hips (21%) at distal smooth and of the grit-blast area. Two femoral components were revised: one for subsidence, and the other for the recurred infection. Therefore, the success rate was 97.3%.
Conclusion: The authors believe that these good results are a consequence of excellent bony ingrowth on the proximal two-thirds of the femoral surface area. In conclusion, proximal plasma-spray coating and tapered shape of the Ti-stem showed excellent bony ingrowth and initial stability. Our results indicate that distal tapered shape may be an important element in the design of cementless stems.
The abstracts were prepared by Michael A. Mont, M.D. and Lynne C. Jones, Ph.D. Correspondence should be addressed to L. Jones at Good Samaritan Prof. Bldg., Suite 201, 5601 Loch Raven Blvd., Baltimore, MD 21239
