Asymmetrical tibial polyethylene geometry-cruciate retaining total knee arthroplasty does not fully restore in-vivo articular contact kinematics during strenuous activities
| Autor: | Young-Min Kwon, John Drago, Venkatsaiakhil Tirumala, Christian Klemt |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
musculoskeletal diseases
Male medicine.medical_specialty Knee Joint Total knee arthroplasty Geometry Kinematics Condyle 03 medical and health sciences Femoral rollback 0302 clinical medicine Medicine Humans Orthopedics and Sports Medicine Range of Motion Articular Arthroplasty Replacement Knee 030222 orthopedics Tibia business.industry Significant difference 030229 sport sciences musculoskeletal system Cruciate retaining Biomechanical Phenomena Articular contact Polyethylene Orthopedic surgery Surgery Female business Knee Prosthesis |
| Zdroj: | Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA. 30(2) |
| ISSN: | 1433-7347 |
| Popis: | A new CR TKA design with concave medial and convex lateral tibial polyethylene bearing components was introduced recently to improve functional outcomes. This study aimed to investigate in-vivo articular contact kinematics in unilateral asymmetrical tibial polyethylene geometry CR TKA patients during strenuous knee flexion activities. Fifteen unilateral CR TKA patients (68.4 ± 5.8 years; 6 male/9 female) were evaluated for both knees during sit-to-stand, single-leg deep lunges and step-ups using validated combined computer tomography and dual fluoroscopic imaging system. Medial and lateral condylar contact positions were quantified during weight-bearing flexion activities. The Wilcoxon signed-rank test was performed to determine if there is a significant difference in articular contact kinematics during strenuous flexion activities between CR TKA and the non-operated knees. Contact excursions of the lateral condyle in CR TKAs were significantly more anteriorly located than the contralateral non-operated knee during sit-to-stand (3.7 ± 4.8 mm vs − 7.8 ± 4.3 mm) and step-ups (− 1.5 ± 3.2 mm vs − 6.3 ± 5.8 mm). Contact excursions of the lateral condyle in CR TKAs were significantly less laterally located than the contralateral non-operated knee during sit-to-stand (21.4 ± 2.8 mm vs 24.5 ± 4.7 mm) and single-leg deep lunges (22.6 ± 4.4 mm vs 26.2 ± 5.7 mm, p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink