Finger Joint Replacement

Alfred B. Swanson, M.D., an orthopaedic surgeon and scientist from the USA, researched and created the first successful small joint implant that was approved for use in 1969. Since then, the field has opened up to several other manufacturers. Finger joint implants are made out of silicone. The goal of the original implant was to reduce pain and gain back 30-40% of movement. The newer joints are made to closely resemble the natural joint structure. This decreases the stress on the implant and increases its range of motion to a more natural movement.


The Surgery


The incision is made on the back of your hand over the joints, your old joint(s) are separated and the arthritic surfaces are removed. The remaining bone is shaped and a hole is drilled into the middle, then the new joint is fitted in place, and the surrounding tendons and ligaments are wrapped around the new finger joint tightly to protect and hold it in place. The joint is then tested for movement before the finger is closed and the finger is splinted or braced. The hand and wrist may be wrapped in a cast or large dressing depending on how many joints are replaced. The complete procedure takes about 2 hours and can be done under a local or general anaesthetic.







After Surgery


In order to prevent swelling and stiffness the hand is kept elevated for the first few days. If you had one joint replaced you most likely will be an out-patient, but if multiple finger joints were replaced you will be in in-patient for one night. Pain medication, as well as, antibiotics may be prescribed. Once the incision has healed, approximately 6 weeks, it is important to have physiotherapy to regain pain free movement of the finger.


Risks


1) Infection
2) Implant failure
3) Allergic reaction to the silicone


If you have any questions regarding finger joint replacement please talk to your doctor or an orthopaedic surgeon.