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Erschienen in: Der Orthopäde 10/2014

01.10.2014 | Leitthema

Erfahrungen mit medialen monokondylären Prothesen mit mobilem Plateau

verfasst von: PD. Dr. M.F. Pietschmann, P. Weber, A. Steinbrück, L. Wohlleb, V. Jansson, P.E. Müller

Erschienen in: Die Orthopädie | Ausgabe 10/2014

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Zusammenfassung

Hintergrund

Der unikondyläre Oberflächenersatz (UKA) ist ein fester Bestandteil in der Therapie der medialen Gonarthrose. Die schnelle Rehabilitation, gute Beweglichkeit und die zunehmend besseren Standzeiten haben insbesondere bei jüngeren Patienten mit einem hohen funktionellen Anspruch zu einer Zunahme der Operationszahlen geführt.

Fragestellung

Ziel unserer Untersuchung war die Evaluation des sportlichen Aktivitätsgrades nach Implantation einer UKA sowie des Einflusses der Prothesenposition und des rertropatellaren Arthrosegrades auf das klinische Outcome.

Material und Methoden

Von 181 Kniegelenken, die eine Oxford-Phase-III-UKA mit mobilem Inlay implantiert bekamen, konnten 136 nachuntersucht werden (75,1 %). Das Durchschnittsalter bei Prothesenimplantation lag bei 65,2 Jahren, das mittlere Follow-up betrug 4,2 Jahre. Neben einer klinischen und radiologischen Untersuchung wurden der WOMAC-, OKS-, der KSS-, der UCLA-Activity- sowie der Turba-Score erhoben.

Ergebnisse

Ihre sportliche Betätigung nach Implantation der Oxford-III-Prothese führten 81 % der Patienten fort. Es konnte kein erhöhtes Risiko zwischen sportlicher Aktivität und Revisionsrate, Inlayluxation oder Arthroseprogression festgestellt werden. Die sportlich aktive Gruppe wies in allen klinischen Scores bessere Ergebnisse auf als die inaktive Gruppe. Die korrekte Implantatpositionierung, insbesondere das Vermeiden einer Überkorrektur in einen Valgus sind wichtige Faktoren für ein gutes klinisches Ergebnis.

Diskussion

Die Ergebnisse belegen, dass nach Implantation einer UKA vom Typ Oxford III eine sportliche Betätigung sehr gut möglich ist und die Patienten eine deutliche subjektiven Verbesserung ihres Gesundheitszustands erlangen, ohne dabei ein erhöhtes Risiko für Komplikationen einzugehen.
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Metadaten
Titel
Erfahrungen mit medialen monokondylären Prothesen mit mobilem Plateau
verfasst von
PD. Dr. M.F. Pietschmann
P. Weber
A. Steinbrück
L. Wohlleb
V. Jansson
P.E. Müller
Publikationsdatum
01.10.2014
Verlag
Springer Berlin Heidelberg
Erschienen in
Die Orthopädie / Ausgabe 10/2014
Print ISSN: 2731-7145
Elektronische ISSN: 2731-7153
DOI
https://doi.org/10.1007/s00132-014-3010-y

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