Facts about a finger joint replacement include that doctors most frequently perform this procedure on the second joint from the fingertip, states MedicineNet. The joint closest to the fingertip is not a good candidate for this procedure because the bones are small and don't adequately keep the implant in place.
The need for replacement of the third joint from the fingertip mainly arises when rheumatoid arthritis destroys this joint, notes MedicineNet. The most common implants to replace the second and third joints from the fingertip are made of silicone.
Following finger joint replacement, patients must undergo therapy to strengthen the joint and improve mobility, according to About.com. This often takes several months. Infection, injury to nerves, joint instability, and loosening or wearing out of the implant are some risks involved in finger joint surgery.