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Kinematic Evaluation of the GMK Sphere Implant During Gait Activities: A Dynamic Videofluoroscopy Study
P. Schütz, WR. Taylor, B. Postolka, SF. Fucentese, PP. Koch, MAR. Freeman, V. Pinskerova, R. List,
Jazyk angličtina Země Spojené státy americké
Typ dokumentu srovnávací studie, časopisecké články, pozorovací studie, práce podpořená grantem
Grantová podpora
Medacta International - International
Commission for Technology and Innovation (CTI) Switzerland - International
NLK
Medline Complete (EBSCOhost)
od 2012-07-01 do Před 1 rokem
Wiley Free Content
od 2001 do Před 1 rokem
PubMed
31304995
DOI
10.1002/jor.24416
Knihovny.cz E-zdroje
- MeSH
- biomechanika MeSH
- chůze (způsob) * MeSH
- fluoroskopie MeSH
- kohortové studie MeSH
- lidé středního věku MeSH
- lidé MeSH
- protézy kolene * MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- Check Tag
- lidé středního věku MeSH
- lidé MeSH
- mužské pohlaví MeSH
- senioři nad 80 let MeSH
- senioři MeSH
- ženské pohlaví MeSH
- Publikační typ
- časopisecké články MeSH
- pozorovací studie MeSH
- práce podpořená grantem MeSH
- srovnávací studie MeSH
Joint stability is a primary concern in total knee joint replacement. The GMK Sphere prosthesis was specifically designed to provide medial compartment anterior-posterior (A-P) stability, while permitting rotational freedom of the joint through a flat lateral tibial surface. The objective of this study was to establish the changes in joint kinematics introduced by the GMK Sphere prosthesis during gait activities in comparison to conventional posterior-stabilized (PS) fixed-bearing and ultra-congruent (UC) mobile-bearing geometries. The A-P translation and internal/external rotation of three cohorts, each with 10 good outcome subjects (2.9 ± 1.6 years postop), with a GMK Sphere, GMK PS or GMK UC implant were analysed throughout complete cycles of gait activities using dynamic videofluoroscopy. The GMK Sphere showed the smallest range of medial compartment A-P translation for level walking, downhill walking, and stair descent (3.6 ± 0.9 mm, 3.1 ± 0.8 mm, 3.9 ± 1.3 mm), followed by the GMK UC (5.7 ± 1.0 mm, 8.0 ± 1.7 mm, 8.7 ± 1.9 mm) and the GMK PS (10.3 ± 2.2 mm, 10.1 ± 2.6 mm, 11.6 ± 1.6 mm) geometries. The GMK Sphere exhibited the largest range of lateral compartment A-P translation (12.1 ± 2.2 mm), and the largest range of tibial internal/external rotation (13.2 ± 2.2°), both during stair descent. This study has shown that the GMK Sphere clearly restricts A-P motion of the medial condyle during gait activities while still allowing a large range of axial rotation. The additional comparison against the conventional GMK PS and UC geometries, not only demonstrates that implant geometry is a key factor in governing tibio-femoral kinematics, but also that the geometry itself probably plays a more dominant role for joint movement than the type of gait activity. © 2019 The Authors. Journal of Orthopaedic Research® published by Wiley Periodicals, Inc. on behalf of Orthopaedic Research Society. J Orthop Res 37:2337-2347, 2019.
1st Orthopaedic Clinic Faculty of Medicine Charles University Prague Czech Republic
Institute for Biomechanics D HEST ETH Zurich Zurich Switzerland
Klinik für Orthopädie und Traumatologie Winterthur Cantonal Hospital Winterthur Switzerland
Orthopaedics Balgrist University Hospital Zürich Switzerland
Citace poskytuje Crossref.org
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