Thumb Base Joint Replacement
In this procedure, the joint at the base of the thumb is removed and replaced with a metal and plastic thumb joint – much like a small hip replacement. Historically, joint replacements at the base of the thumb have not lasted a long time, but more modern designs are looking much more promising and provide better pain relief, grip strength and function than Trapeziumectomy. In the medium term the replacements seem to be lasting well with 98% lasting at least 4 years. However, we cannot say how long they will last for and if you opt for a joint replacement it is possible further surgery may be required in the future.
The operation itself takes around an hour and can be done under general anaesthesia – with you asleep; or under regional anaesthesia – with a numb arm. There will be a scar on the back of the thumb, typically around 4-5cm.