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Total hip replacement arthroplasty with Mallory-Head system--minimum ten-year follow-up results
Joo-Hyoun Song1, Dong-Hyun Kim, Juyoung Kim
1Department of Orthopedic Surgery, St. Vincent's Hospital, The Catholic University of Korea, Suwon, Korea.
Purpose:
The purpose of this study was to assess the clinical and radiographic results of a total hip arthroplasty with the double tapered Mallory-Head system.
Methods:
The clinical and radiographic results of a consecutive series of 81 total hip replacements in 75 patients were reviewed 10-15 years (average 11.4 years) postoperatively. The patients' underlying conditions were avascular necrosis in 46 hips (57 %), osteoarthritis in 12 hips (15 %), RA in nine hips (11 %), and others. Clinical results were evaluated based on the modified Harris hip score and modified Merle d'Aubigné-Postel score. A radiographic analysis was performed.
Results:
The average modified Harris hip score improved from a preoperative score of 56 points to a postoperative 92 points. The average modified Merle d'Aubigné-Postel score was 15 points at the latest follow up, and 55 hips (68 %) were classified as the clinical grades of excellent or good results. One acetabular component was revised because of loosening, and one was revised for recurrent dislocation.
Conclusion:
The clinical and radiological evaluations of the total hip replacements using the Mallory-Head system showed good results.
