Flexor Carpi Radialis (FCR) Tendinitis

The Flexor Carpi Radialis (FCR) is one of the tendons that helps flex the wrist. It is located on the palmar surface of the wrist, near the base of the thumb muscles. Overuse, usually from repetitive lifting with the palm up, may lead to FCR Tendinitis. Computer use may also cause FCR Tendinitis because the FCR is often used maintain pressure on the keyboard by flexing the wrist. FCR Tendinitis is similar to DeQuervain’s Tendinitis in that it’s caused by a space problem.

Like the tendons involved in DeQuervain’s syndrome, the FCR tendon runs in a sheath. Overuse can lead to swelling within that sheath, leading to compression/pinching of the FCR tendon. This leads to pain and tenderness, usually located about an inch above the wrist. This pain is often increased by gripping and by lifting with the palm up, both of which stress the tendon.

Treatment starts with avoiding painful activities. Try to limit lifting. If lifting is necessary, then lift with the palm down. A splint can be worn during periods of heavy activity or when typing. A steroid injection can effectively decrease inflammation and swelling, and reduce pain. If non-operative measures fail, then the FCR’s tunnel (sheath) can be surgically released. This is a simple, quick, minimally-invasive, outpatient procedure. Like the DeQuervain’s Release, it is highly effective.

Please keep the wound clean and dry for 24 hours. Bathing is safer than showering. Wrap a towel around the dressing in case any water gets in, then place a plastic bag over the hand and secure it tightly with rubber bands. After 24 hours the dressings can be removed and the incision can get wet in the shower. Blot it dry. There are no stitches to remove (they’re buried and absorbable). There’s a piece of tape over the wound. The tape will fall off when it’s ready. The longer it stays on, the nicer the final wound may look. Please don’t submerge the incision under water (like swimming, or putting your hand under water) for 10 days after surgery.

After surgery, avoid heavy activities for a week or two. Once released, the FCR tendon starts to heal. How long it takes to feel better depends on how much damage it had before it was released and how much the FCR tendon gets to rest following surgery. Like the DeQuervain’s Release and Intersection Release, FCR Release is usually very effective.