We reviewed, 9 to 12 years postoperatively, the records on an original cohort of 289 arthroplasties (218 patients) in which a posterior stabilized knee prosthesis with an all-polyethylene tibial component had been inserted at The Hospital for Special Surgery. 180 intact prostheses in 139 patients were available for this analysis. 14 knees in 14 patients had had a revision procedure. 5 of these 14 patients had had a bilateral arthroplasty, but only one knee of each of the 5 patients had been revised. 48 of the patients (66 knees) had died less than 9 years after the operation. 29 other knees (22 patients) had been lost to follow-up before a 9-year evaluation could be performed. Considering all 194 knees (including the 14 that had been revised), the result with the system of The Hospital for Special Surgery was excellent for 117 knees (61 per cent), good for 51 (26 per cent), fair for 12 (6 per cent), and poor for the 14 knees (7 per cent) that had been revised. The 180 knees in which the prosthesis was intact were also rated with the new scoring system of The Knee Society: the average postoperative knee score was 92 points (range, 35 to 100 points), and the average score for function was 66 points (range, 0 to 100 points). Survivorship analysis showed that the average annual rate of failure was 0.4 per cent and that the over-all rate of success at 13 years was 94 per cent.(ABSTRACT TRUNCATED AT 250 WORDS)
Copyright remains with the authors and publisher.
We reviewed, 9 to 12 years postoperatively, the records on an original cohort of 289 arthroplasties (218 patients) in which a posterior stabilized knee prosthesis with an all-polyethylene tibial component had been inserted at The Hospital for Special Surgery. 180 intact prostheses in 139 patients were available for this analysis. 14 knees in 14 patients had had a revision procedure. 5 of these 14 patients had had a bilateral arthroplasty, but only one knee of each of the 5 patients had been revised. 48 of the patients (66 knees) had died less than 9 years after the operation. 29 other knees (22 patients) had been lost to follow-up before a 9-year evaluation could be performed. Considering all 194 knees (including the 14 that had been revised), the result with the system of The Hospital for Special Surgery was excellent for 117 knees (61 per cent), good for 51 (26 per cent), fair for 12 (6 per cent), and poor for the 14 knees (7 per cent) that had been revised. The 180 knees in which the prosthesis was intact were also rated with the new scoring system of The Knee Society: the average postoperative knee score was 92 points (range, 35 to 100 points), and the average score for function was 66 points (range, 0 to 100 points). Survivorship analysis showed that the average annual rate of failure was 0.4 per cent and that the over-all rate of success at 13 years was 94 per cent.(ABSTRACT TRUNCATED AT 250 WORDS)
Copyright remains with the authors and publisher.