This common condition caused by a narrowing of the sheath in the soft tissue surrounding the flexor tendons in the hand, in which the tendon becomes trapped and painfully snaps during routine use of the hand and results in a catching of the finger or thumb in a bent position, where it can sometimes lock in that position. Treatment usually consists of a cortisone injection or a minor procedure to release the tight sheath under a local anesthesia.
Release is provided by dividing the tendon sheath. In traditional surgery, this required an open incision in the palm of the hand. Percutaneous technique allows the surgeon to accomplish the same surgical result without an incision, using a special needle.