EZout - Acetabular Cup Removal System
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Hip revisions are Devil’s work – Confucius: #NeoArmory:
There are always three stages of surgeon’s psyche during a hip revision. Stage one is when you see the mess and think why am I doing the surgery. Stage two is when you begin implant removal and think Why did I Take up Orthopaedics. Stage three is when the acetabular cup comes out and you feel a sense of winning and you say to yourself ‘That’s why’.
Taking the cup out almost decides how easy the revision is going to go. Any fracture means, extending the approach to fix the pelvis even before thinking about proceeding with revision. Bashing it but with surgical precision has been the age-old way. But Stryker has a novel idea. Using the power tool’s finesse to extract the cup. In comes EZoutTM.
It essentially involves using a curved saw blade to take the bone away. The liner is used to centre the contraption. A second blade with near full radius will finish the job. This can be used for both Striker and Non-stryker hemispherical cups. This comes with measurement template to decide the liner and blade size.
Bone model study shows reduction in transmitted force compared to traditional impaction, lower observed strain at the posterior wall region, faster removal time, lower residue on the cup but slightly higher temperature reached. We don’t have a human study on this yet; but follow this space for an update if there is any. Check out the Video.
