Revizní náhrada kolena po aseptickém uvolnění
| Title in English | Revision knee surgery for aseptic loosening |
|---|---|
| Authors | |
| Year of publication | 2007 |
| Type | Article in Periodical |
| Magazine / Source | Acta chirurgiae orthopaedicae et traumatologiae čechoslovaca |
| MU Faculty or unit | |
| Citation | |
| Field | Traumatology and orthopaedic surgery |
| Keywords | Total knee replacement - revision |
| Description | Purpose of the study is the evaluation of the results of revision knee surgery at the mean of 6,1 years of follow up.: Material and methods: The authors evaluated 97 knees after revision for aseptic loosening of one or both or three components operated in 1992 - 2005 years. There were 46 male and 51 female in the mean age of 66,8 yeras. KSS score before surgery was 31 points and FS score was 22 points. There were 40 cases with AORI defects type I., 48 with AORI defects type II. and 7 lagre defects AORI type III. in the study. The authors have implanted standard components 14, standard components with stem extension 9 and exchange of PE plateau 18. They used in tpe II defect PS variant with cemented extension of the stem 15, revision implants with uncemented stems 26 and and standard components with extended cemented stems 8. U In type III defects they used hinge type of implant. Results: KSS score has improved from 31 to 74 points at the average. FS score has improved from 22 to 67 points. 15 patient were not satisfied with the result. The cause was aseptic loosening (4), deep infection(8) and pain with progresion of radiolucent line in the tibia (3). Discussion: Results of revision surgery are worse than after primary knee replacement. The mean KSS score was in revision 74 points but in primary TKA 92 points at the same period. Tha rate of deep infection after revision is 8,2 % and after primaty TKA 0,8 %. The authors prefer in large defects PS variants with uncemeneted stems. Conclusion: The authors prefer to fill in the bone defects with bone grafts. In cases with deficient metaphyseal bone they prefer long uncemented intramedular stems. They use off- set stem with good results. |