Surgery to correct De Quervain’s tenosynovitis is called a 1st Extensor Compartment Release. This involves a small incision over the thumb side of the wrist to access and release the 1st Extensor Compartment that is entrapped the EPB and APL tendons, causing pain and difficulty with movement. This is performed as an outpatient procedure or office procedure, meaning you will be able to go home that day.