What causes your thumb to draw up4/21/2024 ![]() Stiffness or loss of motion: A trigger finger may result in loss of the ability to bend the finger.The cyst is called a flexor sheath ganglion. This can be due to a nodular swelling within the tendon or the development of a fluid filled cyst. Swelling: Over time there may be the development of a lump at the A1 pulley.Over time, if there is increased fluid production in the tendon sheath, this may cause pressure and pain even without hand use. The pain is often only present with activity such as gripping. This pain occurs with pressure over the A1 pulley area. Pain: Trigger finger may start with discomfort felt at the base of the affected finger or thumb, where the finger joins the palm.Some symptoms of trigger finger can include: It is also helpful to know this problem has several very successful treatments. ![]() It is rare to require other diagnostic testing. The good news is that trigger finger can be diagnosed by the history, symptoms, and a physical exam. This makes it difficult for the tendon to move back and forth (Figure 2). This thicker pulley causes friction on the moving tendon. The undersurface of the pulley can also change and thicken. And the higher volume of fluid increases pressure. The bigger lining then produces more fluid. If the tendon becomes tight within the pulley, the lining gets squeezed and reacts with thickening. The change in size of any of the important finger structures can cause problems. The finger tendon and pulley system is designed to have the exact right sizes of each structure. the pulley becomes thicker (the opening for the tendon gets smaller). The lining increases in thickness (does not fit through pulley well) 3. The tendon enlarges (does not fit through pulley well) 2. The pulleys are similar to how a line is held on a fishing rod (Figure 1).Ī trigger finger, sometimes referred to as a trigger thumb or stenosing tenosynovitis, can occur if one of three things happen: 1. The tendon and its lining are designed to glide through the pulleys without friction. The tendon and lining are covered by a series of thick, soft tissue called pulleys. The flexor tendons that bend the fingers have a lining on the outside. It can occur in both fingers and the thumbs, which have tendons that help them to bend. A trigger finger is a very common and treatable problem. ![]()
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