Metal-on-metal (MoM) hips were originally marketed as an alternative to the traditional ceramic or plastic hips and were targeted for the younger, more active patients. Many of these younger patients are in their 40s and 50s, faced with a lifetime of injury and complications ahead. Patients with a lifetime injury and complications allegedly caused by the metal-on-metal hips are likely to endure a longer recovery process after revision surgery.
Many hip recipients with hip replacement failure have reported numerous problems. These problems include: breakage (primarily caused by constant weight-bearing stress), fractures (typically near the artificial joint), loosening of the attachment between the bone and the artificial device (both in cemented and un-cemented artificial joints), wear and tear on the parts, pain and stiffness caused by the loosening of the attachment between the implant and bone, instability (typically occurs when the artificial joint dislocates), and infection.
These problems can lead to the need for revision surgery, and may require a lengthy recovery process. There are no guarantees revision surgery will ever fix the problem (s). Your surgeon will explain this to you during your surgical consultation.