التفاصيل البيبلوغرافية
| العنوان: |
Are There Differences in Micromotion on Radiostereometric Analysis Between Bicruciate and Cruciate-retaining Designs in TKA? A Randomized Controlled Trial |
| المؤلفون: |
Troelsen, Anders, Ingelsrud, Lina Holm, Thomsen, Morten Grove, Muharemovic, Omar, Otte, Kristian Stahl, Husted, Henrik |
| المصدر: |
Clinical Orthopaedics & Related Research ; volume 478, issue 9, page 2045-2053 ; ISSN 0009-921X 1528-1132 |
| بيانات النشر: |
Ovid Technologies (Wolters Kluwer Health) |
| سنة النشر: |
2019 |
| الوصف: |
Background Bicruciate-retaining TKA has been proposed to improve clinical outcomes by maintaining intrinsic ACL function. However, because the unique design of the bicruciate-retaining tibial component precludes a tibial stem, fixation may be compromised. A radiostereometric analysis permits an evaluation of early migration of tibial components in this setting, but to our knowledge, no such analysis has been performed. Questions/purposes We performed a randomized controlled trial using a radiostereometric analysis and asked, at 2 years: (1) Is there a difference in tibial implant migration between the bicruciate-retaining and cruciate-retaining TKA designs? In a secondary analysis, we asked: (2) Is there a difference in patient-reported outcomes (Oxford Knee Score [OKS] and Forgotten Joint Score [FJS] between the bicruciate-retaining and cruciate-retaining TKA designs? (3) What is the frequency of reoperations and revisions for the bicruciate-retaining and cruciate-retaining TKA designs? Methods This parallel-group trial (ClinicalTrials.gov: NCT01966848) randomized 50 patients with an intact ACL who were eligible to undergo TKA to receive either a bicruciate-retaining or cruciate-retaining TKA. Patients were blinded to treatment allocation. The primary outcome was the maximum total point motion (MTPM) of the tibial component measured with model-based radiostereometric analysis (RSA) at 2 years postoperatively. The MTPM is a translation vector defined as the point in the RSA model that has the greatest combined translation in x-, y- and z-directions. A 1-year postoperative mean MTPM value of 1.6 mm has been suggested as a threshold for unacceptable increased risk of aseptic loosening after both 5 and 10 years. The repeatability of the MTPM was found to be 0.26 mm in our study. Patient-reported outcome measures were assessed preoperatively and at 2 years postoperatively with the OKS (scale of 0-48, worst-best) and FJS (scale of 0-100, worst-best). Baseline characteristics did not differ between groups. At ... |
| نوع الوثيقة: |
article in journal/newspaper |
| اللغة: |
English |
| DOI: |
10.1097/corr.0000000000001077 |
| DOI: |
10.1097/CORR.0000000000001077 |
| الإتاحة: |
https://doi.org/10.1097/corr.0000000000001077Test |
| رقم الانضمام: |
edsbas.1BA0F4B |
| قاعدة البيانات: |
BASE |
