It was reported that, during tka surgery, a grey tipped flat tibial impactor was used on journey uni tibinrt s3-4lm/rl9mm to engage implant posteriorly.Following this, it was unable to engage locking mechanism of insert anteriorly.There was no debris on tibial plate that could be impeding it.After a few attempts to lock insert to tibial base plate, a new insert was used, which locked in straight away.On inspection of implant, it appeared that anterior locking mechanism was broken.Initially, it was discussed that this was likely compromised when it was impacted posteriorly to tibial base plate.Further discussions revealed that the implant could be potentially malformed/ faulty (at anterior locking portion) prior to impacting and then this was likely exacerbated when the impaction took place.The procedure was resumed, after a non-significant delay, with a s+n back-up device.Patient was not injured as consequence of this problem.
|