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Fixed-bearing knee prosthesis GMK sphere

fixed-bearing knee prosthesis
fixed-bearing knee prosthesis
fixed-bearing knee prosthesis
fixed-bearing knee prosthesis
fixed-bearing knee prosthesis
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Characteristics

Tibial bearing
fixed-bearing

Description

TIBIAL COMPONENT 6 sizes Anatomical: left and right Material: Cobalt-Chrome (Co-Cr-Mo ISO 5832-4) Cemented: 0.5 mm deep pockets STABILITY GMK Sphere features a fully congruent medial compartment providing: High stability throughout the range of motion No paradoxical motion between femur and tibia No implant-related “mid-flexion” instability NATURAL PATELLAR TRACKING GMK Sphere replicates natural lateralised patella tracking to reduce patello femoral joint pressure and address anterior knee pain[8,9]: Trochlea groove lateralised by 2 mm to enable natural patella tracking.[9] Flattened medial trochlear wall prevents patello-femoral overstuffing minimising retinacular tension.[8] Anatomic patellar implant with medialised dome allows for optimal bony coverage with reduced soft tissue tension, improved stability and contact area. ANATOMICAL FIT Extensive anthropometric research on a unique global database containing more than 15,000 CT and MRI scans of knees validated the[12]: Range of 13 femoral sizes with 2 mm increments that best fit a broad spectrum of anatomic profiles Anatomically shaped tibial baseplate Range of inserts with 1 mm increments The combination of 13 femoral sizes and inserts with 1 mm increments allows the surgeon to “fine tune” ligament balance and improve stability throughout the range of motion.PATIENT-SPECIFIC KINEMATICS GMK Sphere accommodates the best pattern of kinematic motion for each patient rather than imposing an assumed “norm”. This is achieved with: “Ball in socket” stability throughout the range of motion in the medial compartment Freedom of movement in the lateral compartment

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