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Your search keyword '"Dorey, Frederick J."' showing total 25 results
Start Over Author "Dorey, Frederick J." Journal clinical orthopaedics and related research
25 results on '"Dorey, Frederick J."'

6. Wear Is a Function of Use, Not Time

Author

Schmalzried, Thomas P., primary, Shepherd, Eric F., additional, Dorey, Frederick J., additional, Jackson, Walter O., additional, dela Rosa, Mylene, additional, Fa???vae, Fa???vae, additional, McKellop, Harry A., additional, McClung, Christian D., additional, Martell, John, additional, Moreland, John R., additional, and Amstutz, Harlan C., additional

Published
2000
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24. Resurfacing THA for patients younger than 50 year: results of 2- to 9-year followup.

Author

Amstutz HC, Ball ST, Le Duff MJ, and Dorey FJ

Subjects
Adolescent, Adult, Aged, Female, Follow-Up Studies, Humans, Male, Metals, Middle Aged, Pain Measurement, Prosthesis Design, Prosthesis Failure, Recovery of Function, Statistics, Nonparametric, Treatment Outcome, Arthroplasty, Replacement, Hip methods, Hip Prosthesis
Abstract

Resurfacing THA is an attractive treatment option for young patients because it saves the femoral head and is easily revisable. We assessed the clinical outcome of metal-on-metal hybrid total hip resurfacing for the treatment of 295 patients (350 hips) younger than 50 years of age (average, 41.2 years) and compared these results with those of patients 50 years or older (average, 57.4 years) at the time of surgery who were implanted with the same design. Seventy-five percent of the patients were male. The minimum followup was 2 years (mean 5.5 years; range 2-9 years). UCLA hip scores improved to 9.4 for pain; 9.6 for walking; 9.5 for function; and 7.6 for activity. We found no differences in survivorship between younger and older patients, and postoperative clinical scores related to the patients' physical health were comparable. There was no acetabular component loosening. Ten hips (2.8%) were revised for femoral aseptic loosening and one for femoral neck fracture. The 5-year survivorship of hips with good bone quality was 97.8%. There has been no femoral component loosening when the femoral stems were cemented irrespective of bone quality. Metal-on-metal resurfacing THA performs well at short to mid-term followup in young, active adults despite high activity levels.

Published
2007
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25. Risk factors affecting outcome of metal-on-metal surface arthroplasty of the hip.

Author

Beaulé PE, Dorey FJ, Le Duff MJ, Gruen T, and Amstutz HC

Subjects
Adult, Biomechanical Phenomena, Female, Follow-Up Studies, Humans, Male, Metals, Prosthesis Design, Risk Factors, Surface Properties, Treatment Outcome, Arthroplasty, Replacement, Hip methods, Hip Prosthesis
Abstract

We evaluated radiologic and clinical features affecting the outcome of hybrid metal-on-metal surface arthroplasty of the hip in 119 hips in patients 40 years and younger. Only the hips that had either failed or had minimum 2-year followup were reviewed. Ninety-four hips in 83 patients with a mean age of 34.2 years (range, 15-40 years) were reviewed. Seventy-one percent of the patients were males and 29% of the patients were females; 14% had previous surgery. The Chandler index and surface arthroplasty risk index were calculated. The mean followup at 3 years (range, 2-5 years) showed that three hips were converted to a total hip replacement at a mean of 27 months (range, 2-50 months) after the original surgery, and 10 hips had significant radiologic changes. The mean surface arthroplasty risk index for these 13 problematic hips versus the remaining hips was significantly higher, 4.7 and 2.6, respectively. The mean angle between the prosthesis stem and femoral shaft in the problematic group was significantly smaller than in the remaining hips: 133 degrees and 139 degrees, respectively. With a surface arthroplasty risk index score greater than 3 the relative risk of early problems is 12 times greater than if surface arthroplasty risk index less than or equal to 3.

Published
2004

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