Lernen Sie die Sprunggelenksersatz-Wright Infinity Sprunggelenksersatz-Operationstechnik mit Schritt-für-Schritt-Anweisungen auf OrthOracle. Unsere E-Learning-Plattform enthält hochauflösende Bilder und ein zertifiziertes CME des chirurgischen Verfahrens für den Sprunggelenksersatz-Wright Infinity Sprunggelenksersatz.
Totale Sprunggelenkersatzoperationen werden seit einigen Jahrzehnten zur Behandlung von arthritischen Zuständen des Sprunggelenks implantiert. Das Design und die Biomechanik dieser frühen Implantate waren bestenfalls rudimentär und wurden auf der Annahme hergestellt, dass das Sprunggelenk ein monoaxiales Gelenk ist, das nur in der Sagittalebene beweglich ist. Es ermöglichte keine translatorischen oder rotatorischen Bewegungen des Sprunggelenks, die jetzt bekannt sind, um in menschlichen Sprunggelenken aufzutreten. Diese bestanden aus einfachen zweikomponentigen Baugruppen, die gegeneinander artikulierten und entweder aufgrund mangelnder Osseointegration oder übermäßigem Verschleiß versagten. mehr
Original Intro:
Ankle replacement-Wright Infinity ankle replacement
by Kartik Hariharan
Learn the Ankle replacement-Wright Infinity ankle replacement surgical technique with step by step instructions on OrthOracle. Our e-learning platform contains high resolution images and a certified CME of the Ankle replacement-Wright Infinity ankle replacement surgical procedure.
Total Ankle replacements have been implanted for the treatment of arthritic conditions of the ankle for a few decades now. The design and biomechanics of these early implants was at best rudimentary and were manufactured on the premise that the ankle is a monoaxial joint capable of movement only in the sagittal plane. It did not allow for translational or rotational movements of the ankle that is now known to occur in human ankles. These were simple two component assemblies that articulated against each other and failed either due to lack of osseointegration or excessive wear
Subsequent generations of implants used more modern ideology to create metal components for the tibia and talus with intervening ultra high molecular weight polyethylene acting either as a spacer when fixed or as a meniscus engaging in mobile bearing functions. These proved to be much more successful both in terms of function and of survivorship. The Wright Infinity ankle replacement is one of the latest evolutions of ankle replacement.
The use of the Prophecy cutting jigs are a unique feature of the Wright Infinity Ankle Replacement. This requires a CT scan of the lower limb in question (using a specific protocol ) to enable 3D technology to create these unique jigs. The software uses specific anatomic high points on the tibia and talus including prominences osteophytes and peaks and troughs to create a Wright Infinity jig that will sit on the respective bones fitting into these high points (the so called ‘sweet spot’ where the jig fits perfectly without a toggle). The software also creates an accurate model of the distal tibia and the talus which are sterilisable so that the jig can be fitted onto these anatomically perfect models to assess and practice the orientation of these jigs when fitted on to the actual patients ankle bones on table. Thus at least two copies of these bone models are available sterilised to use for practice on table
Readers will also find the following associated techniques of interest:
Ankle replacement-Wright Prophecy
Ankle Replacement-BOX total ankle replacement (MatOrtho)
Ankle replacement-Revision using Wright Invision Ankle replacement system
Ankle replacement-Star ankle replacement (revision of mensical component)
Ankle Replacement -De Puy Mobility
Author: Kartik Hariharan FRCS
Institution: Aneuran Bevan University Health Board ,Wales ,UK.
Clinicians should seek clarification on whether any implant demonstrated is licensed for use in their own country.
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