What is DeQuervain’s Tenosynovitis? Diagram showing the 2 inflamed tendons (extensor pollicis brevis and extensor pollicis longus) DeQuervain’s tenosynovitis is inflammation involving 2 of the tendons in the thumb and along the side of the wrist. The names of these 2 muscles are the extensor pollicis brevis and the extensor pollicis longus, as depicted above. First, to break down the naming, the Latin name of the thumb is pollex, hence pollicis, while the “extensor” refers to the movement that the muscles create at the thumb, extension! Lastly, brevis and longus refers to how short (or brief!) or long the muscle…

What is trigger finger? Trigger finger is a hand condition where the finger can get stuck in a bent position. Afterwards, it may straighten suddenly with a snap. Usually, the fingers most often affected are the ring finger and the thumb, but the condition can affect any finger. Depending on the severity, the locking and popping open of the finger may be quite painful. Why does it happen? The tendon sheathe becomes swollen and blocks movement. Trigger finger happens when the tendon that controls that finger can’t glide smoothly in the sheath that surrounds it. This may occur if part…

Anatomy of the 1st CMC Joint The 1st Carpo-meta-carpal (CMC) joint is more commonly referred to as the thumb joint. It is located at the base of the thumb between the carpal bones and the metacarpal bones. It is classified as a saddle joint, meaning it allows the thumb to move freely in many directions. As a result of this mobility, you can perform a wide variety of complicated tasks such as opening a jar, pinching an object, writing, and holding differently shape objects. What is Thumb Arthritis? Arthritis is a general condition that can affect any joint in the…

What is carpal tunnel syndrome? Carpal tunnel syndrome (CTS) is a common neurological disorder. It  occurs when the median nerve, which runs from your forearm into the palm of the hand, becomes compressed or squeezed at the wrist. Importantly, the median nerve provides feeling to the thumb, index, and middle finger, and part of the ring finger (but not the little finger). Also, it controls some small muscles at the base of the thumb. Sometimes, thickening from the lining of irritated tendons or other swelling narrows the tunnel and compresses the median nerve. For example, a common sign is that you might wake up and feel you need to “shake out” your hand or wrist. What are the symptoms of carpal tunnel syndrome? Usually, carpal tunnel syndrome symptoms start gradually and includes: Tingling or numbness – You may notice tingling and numbness in the fingers or hand. Usually the thumb…

Triangular Fibrocartilage Complex (TFCC) Injury The TFCC is a combination of ligament, tendon and cartilage and therefore name as Triangular Fibrocartilage complex. This ligament has a major function of stabilizing and supporting the wrist. It is an important structure connecting the forearm bones to the small bones in wrist, thereby giving you the mobility when you grip object tightly or rotate the wrist. The TFCC provides these movement more support and range while behaving as cushion in the area. What causes TFCC strain or tear? There are two ways your TFCC can give up – either due to injury or any degeneration of these ligament. Injury – most often when you fall on outstretched hand is a common precursor of the TFCC injury or tear. The mechanism could be a sudden impact or a twisting injury. Older adults are more vulnerable as there can be thinning of these ligaments with…