A knee replacement involves removing damaged surfaces of the femur (thigh bone) and the tibia (shin bone) and replacing them with artificial components. Debbie says the pain resulted from the knee implant slipping from the tibia and wearing away the bone. She has since had a second knee replacement, but the problems caused by the initial failed implant have caused long-lasting health problems, she says. As part of their knee replacements, both Debbie and Diana had received a specific implant section, known as a "stemmed option tibial component", also known as a "tibial tray". In broad terms, this section lacked a layer of plastic contained in earlier, well-regarded versions of the NexGen replacement knee.

Source: The Times August 13, 2025 02:14 UTC