Claim by customer that knee powered off while working on ladder could not be confirmed as no device was returned for analysis.Root cause can only be suggested based on historical knowledge while no similar instance can be related to as no incident has been recorded for user operating the knee in ladder.Instances are known where user inadvertently is able to trigger wrong state in the knee, causing knee to buckle, particularly in complex activity scenario.Further to this, other factors such as trans femoral user operating in a ladder is in itself inherently dangerous activity whereas tf users are known to be prone to falling irrespective of product failure in both normal and abnormal gait scenarios.Given user history with the given knee, issues which user has been experiencing may be related to battery depletion while root cause for this cannot be confirmed but may be due to damaged power supply or housing power outlet.In any case for battery depletion, warning system is designed to maximize likelihood of user detecting issue prior to be coming hazardous.
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