Conventional total wrist replacement (TWR) is surgery that removes a damaged wrist joint and replaces it with an artificial implant. The procedure, also called total wrist arthroplasty, is designed to relieve chronic wrist pain while preserving the ability to move your wrist, something the main alternative (wrist fusion) cannot offer. It’s most commonly performed for rheumatoid arthritis and post-traumatic arthritis after other treatments like splinting, medication, and injections have failed.
What the Surgery Replaces
Your wrist’s radiocarpal joint is where the bones of your forearm meet the small bones of your hand. In a conventional TWR, a surgeon removes the damaged surfaces of this joint and fits an artificial implant in their place. The implant typically has a metal component anchored into the forearm bone (radius), a metal component fixed into the hand-side bones (carpals), and a plastic spacer between them that allows smooth gliding movement.
The goal is to recreate enough stability and motion for everyday tasks: gripping, turning a doorknob, lifting a cup. A conventional wrist implant won’t feel identical to a natural joint, but it can restore functional range of motion and significantly reduce pain.
Conditions That Lead to TWR
The most common reasons surgeons recommend wrist replacement include rheumatoid arthritis, osteoarthritis, post-traumatic arthritis from a prior fracture, a previously failed wrist fusion, and osteonecrosis (when bone tissue dies from poor blood supply). Among these, rheumatoid arthritis has historically been the most studied indication, and outcomes tend to be strongest in well-controlled rheumatoid and post-traumatic cases.
TWR is typically a last-resort option. Surgeons generally exhaust less invasive approaches first, including motion-sparing procedures that preserve some of the natural wrist anatomy. It’s only when pain remains constant and limits daily life that replacement enters the conversation.
Conventional TWR vs. Wrist Fusion
The main alternative to wrist replacement is wrist fusion (arthrodesis), which permanently locks the wrist bones together. Both procedures provide similar levels of pain relief: about 90% of replacement patients and 98% of fusion patients report no or only mild pain afterward. Satisfaction and complication rates are also comparable between the two.
The key difference is movement. Fusion eliminates wrist motion entirely, which some people struggle to accept. After fusion, you keep good forearm rotation (roughly 73 to 83 degrees of pronation and 68 to 71 degrees of supination), but the wrist itself is rigid. Replacement preserves wrist flexion and extension, which makes certain tasks easier. In direct comparisons, replacement patients were better able to cut meat with a knife, handle personal care tasks, and do household work.
Grip strength ends up in a similar range for both procedures, typically 50 to 79% of the normal opposite hand after fusion and 58 to 72% after replacement. Neither option fully restores the strength of a healthy wrist.
How Generations of Implants Have Evolved
The word “conventional” in TWR usually refers to earlier-generation implant designs, particularly the first through third generations. These implants had high failure rates over time. Ten-year survival ranged widely, from as low as 40% for some models to around 83% for others. That track record limited the procedure’s popularity compared to hip and knee replacements, where implants routinely last 15 to 20 years or more.
Fourth-generation implants, introduced around 2004, were specifically engineered to address these durability problems. Current fourth-generation designs include models like the Universal 2, ReMotion, Freedom, Motec, and Maestro. Reviews of these newer implants show a clear improvement in longevity compared to older models, along with significant reductions in pain and better functional scores on validated questionnaires. For context, one study of earlier designs found the Universal II prosthesis had a 92% survival rate at 5 years, though this dropped to 62% at 10 years. The older BIAX design showed 80% survival at 5 years and 70% at 10 years.
If your surgeon mentions “conventional” TWR, they may be distinguishing these traditional implant approaches from newer or experimental designs. The basic principle remains the same: remove damaged bone surfaces, anchor metal components, and insert a plastic bearing. What changes between generations is the shape, fixation method, and material engineering of the implant.
Risks and Complications
Wrist replacement carries real risks. In one single-center review, loosening of the implant components occurred in about 17% of cases. Infection requiring surgical cleaning happened in roughly 8% of cases, and stiffness and a reaction to metal wear debris (metallosis) each occurred at similar rates. Loosening is the most common long-term concern and the primary reason implants eventually need revision surgery.
Certain factors increase the risk of complications. Smoking is independently linked to soft tissue problems after the procedure, and surgeons strongly recommend quitting before surgery. Workers’ compensation involvement and non-inflammatory wrist conditions are associated with worse return-to-work outcomes. Polyarticular inflammatory arthritis and female sex have been connected to lower patient-reported results in some studies.
What Recovery Looks Like
After surgery, your wrist is immobilized in a splint or cast to allow the implant components to bond with bone. Gentle range-of-motion exercises begin within the first few weeks under the guidance of a hand therapist. Strengthening exercises come later, typically several weeks to months after surgery, once the implant is stable and healing is confirmed on imaging.
Most people can expect a gradual return to light daily activities over the first two to three months, with continued improvement in strength and function over six months to a year. The replaced wrist will have permanent activity restrictions. Heavy lifting, impact activities, and repetitive forceful gripping are generally discouraged for the life of the implant, since excessive loading accelerates wear and loosening. This is one reason TWR works best for people with lower physical demands on their wrists.