LOS ANGELES (AP) — A California jury has heard opening statements from attorneys in a lawsuit over whether a now-withdrawn hip replacement device from a medical giant Johnson & Johnson subsidiary was defective.

The lawyer for a man who had his hip device removed after metal allegedly flaked off into his body on Friday showed jurors pictures of the surgery with black material in the hip socket.

The product liability lawsuit in Los Angeles Superior Court claims Johnson & Johnson knowingly marketed a faulty hip implant that left thousands of people with crippling problems or needing replacement surgeries.

A lawyer for the maker of the device said patient Loren Kransky had many pre-existing medical ailments which caused his problems.