The Trident® Ceramic Acetabular System

Potential Risks

Any artificial hip replacement may be associated with serious complications. These include: dislocation, loosening, implant breakage, bone fracture, reaction to the implant’s materials, bone loss, change in the length of the treated leg, pain, hip stiffness, excessive bleeding, hip joint fusion, nerve damage, allergic reaction to medical and/or blood transfusion, infection, reactions to pain-relieving drugs, blood clots in the legs and/or lungs, amputation, heart attack, pneumonia, excessive wear of the implant’s components, decrease of bone mass, and audible sounds during motion.

With this ceramic-on-ceramic system, sudden breakage of ceramic components resulting from excessive forces is possible; however, no ceramic component broke during the clinical study. Corrosion (eroding) between the insert and shell may be possible; however, this event was not demonstrated in the clinical study, and laboratory tests have shown the potential to be minimal.

An audible noise during motion, such as a squeak, has been reported for patients receiving a ceramic-on-ceramic bearing couple. A 0.5% rate of squeaking noise has been reported in the clinical study with the Trident® Alumina Insert.

Any of the above-cited complications may require medical intervention, including additional surgery. In rare instances, complications may lead to death. Please ask your surgeon to discuss with you any of these complications that are not familiar to you.

Patient Instruction

Call your doctor if you experience any of the following symptoms:

  • Redness, burning, swelling, or drainage from your operated area
  • Fever of 100 degrees or higher
  • Pain that does not lessen with rest
  • Acute, severe pain in the hip associated with twisting, turning or injury

Consult your doctor regarding considerations before surgery, rehabilitation after surgery, and expectations for surgery. It is important to begin planning for your return home from the hospital before your surgical procedure. Your surgeon may suggest tips to prepare your home for after surgery. For example, get an apron or belt with pockets to carry things while you are on crutches, buy or borrow a cordless phone, remove scatter rugs and other obstacles to safe transport using crutches, have high chair and commode accessories available. Above all, during this time, treat yourself well, eat balanced meals, get plenty of rest, and if requested by your surgeon, donate your own blood so it can be transfused during and after surgery.

After surgery you will need to rest your hip to allow proper healing. Your activity will be restricted during this healing period. During the first weeks after surgery, you may be advised to put a pillow between your legs when turning over in bed, wear elastic stockings, use raised toilet seat, take showers rather than baths, restrict activities such as sudden twisting or turning, crossing legs, exposing the scar to sunlight, and driving. Follow carefully your doctor’s instructions regarding progression to normal weight bearing and resumption of normal physical activity. Individual results will vary and all patients will experience different activity levels post-surgery.

Even after the healing period, excessive loads placed on the implants through sudden trauma or high impact activities, such as running and jumping, can damage the artificial joint. While the expected life of an artificial hip replacement system is difficult to estimate, it is finite. The components are made of foreign materials that will not indefinitely withstand the activity level and loads of normal, healthy bone. The hip joint may have to be replaced at some time in the future.

Alternative Treatments

Other options may include use of a conventional hip replacement system, other surgical procedures that do not replace the hip joint, or non-surgical treatments based on pain management and activity restriction. Your doctor can explain these alternatives, and help you decide which treatment is best for your condition.


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