The main problem with defective DePuy hips is the design failure. The hip will fail mechanically. This is a serious matter. Instead of ease of movement, the hip will hinder movement. Movement will be painful, probably noisy, and anything but smooth.
The victim may also suffer “metallosis” from the microscopic particle of metal shards leaking from the working surfaces of the hip sections. Long before such a consequence is suffered, the shedding of metal can be detected by testing of the victim’s blood.
These occur naturally in humans; they are to be found in normal healthy diets. However, in excess they are dangerous; particularly when they take the form of many minute metal fragments, as they do when leaking from the DePuy defective hips.