Locking, catching, or stiffness in a finger can often be identified as trigger finger. It is a condition that affects the tendons in the fingers or thumb.
Tendons are tissues that connect muscles to bone. The tendons in the fingers can become irritated and thicken over time. The thickening is what causes the locking or catching as the tendons attempt to glide as they normally do, but run into resistance since they are too thick.
The causes of trigger finger are unknown. However, there are certain risk factors that have been identified: females, individuals between the age of 40 and 60, diabetics, those with rheumatoid arthritis, and those who perform activities that strain the hand. Symptoms include a tender lump in the palm, swelling, catching or popping in the finger or thumb, and pain when bending or straightening the finger. Pain can be worse after inactivity, and the fingers loosen up as they warm up with movement.
A diagnosis is usually determined by taking a medical history and performing an examination of the affected fingers. X-rays or other diagnostic tools are not usually necessary. Treatment includes rest, OTC anti-inflammatories, and/or steroid injections in more severe cases. If these treatments do not work, surgery is often the only other option. Recovery after surgery is usually complete within a few weeks after surgery, but may take up to 6 months before swelling and stiffness fade away.
See the attached article for more details about the symptoms and treatment for trigger finger. Trigger Finger
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