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Carpal tunnel syndrome


Alternative Names:

Median nerve dysfunction; Median nerve entrapment

Symptoms:
  • Clumsiness of the hand when gripping objects
  • Numbness or tingling in the thumb and next two or three fingers of one or both hands
  • Numbness or tingling of the palm of the hand
  • Pain extending to the elbow
  • Pain in the wrist or hand in one or both hands
  • Problems with fine finger movements (coordination) in one or both hands
  • Wasting away of the muscle under the thumb (in advanced or long-term cases)
  • Weak grip or difficulty carrying bags (a common complaint)
  • Weakness in one or both hands
Signs and tests:

During a physical exam, the health care provider may find:

  • Numbness in the palm, thumb, index finger, middle finger, and thumb side of the ring finger
  • Weak hand grip
  • Tapping over the median nerve at the wrist may cause pain to shoot from the wrist to the hand (this is called the Tinel sign)
  • Bending the wrist forward all the way for 60 seconds will usually result in numbness, tingling, or weakness (this is called the Phalen test)

Tests that may be ordered include:

Outlook (Prognosis):

Symptoms often improve without surgery. But more than half of cases eventually require surgery. Surgery is often successful, but full healing can take months.

When to Contact a Medical Professional:

Call for an appointment with your health care provider if:

  • You have symptoms of carpal tunnel syndrome
  • Your symptoms do not respond to regular treatment, such as rest and anti-inflammatory medications, or if there seems to be a loss of muscle bulk around your fingers
Prevention:

Use tools and equipment that are properly designed to reduce the risk of wrist injury.

Ergonomic aids, such as split keyboards, keyboard trays, typing pads, and wrist braces, may be used to improve wrist posture during typing. Take frequent breaks when typing and always stop if there is tingling or pain.

References:

Huisstede Bm, Hoogvliet P, Randsdorp MS, Glerum S, van Middlekoop M, Koes BW. Carpal tunnel syndrome. Part I: effectiveness of nonsurgical treatments -- a systematic review. Arch Phys Med Rehabil. 2010;91:981-1004.

Huisstede BM, Randsdorp MS, Coert Jh, Glerum S, van Middlekoop M, Koes BW. Carpal tunnel syndrome. Part II: effectiveness of surgical treatments -- a systematic review. Arch Phys Med Rehabil. 2010;91:1005-1024.

Keith MW. American Academy of Orthopaedic Surgeons clinical practice guidelines on the diagnosis of carpal tunnel syndrome. J Bone Joint Surg Am. 2009;91(10):2478-2479.

Keith MW. American Academy of Orthopaedic Surgeons clinical practice guidelines on the treatment of carpal tunnel syndrome. J Bone Joint Surg Am. 2010;92(1):218-219. 

Thomsen JF, Gerr F, Atroshi I. Carpal tunnel syndrome and the use of computer mouse and keyboard: a systematic review. BMC Musculoskelet Disord. 2008 Oct6;9:134 


Review Date: 4/16/2013
Reviewed By: C. Benjamin Ma, MD, Assistant Professor, Chief, Sports Medicine and Shoulder Service, UCSF Department of Orthopaedic Surgery. Also reviewed by A.D.A.M. Health Solutions, Ebix, Inc., Editorial Team: David Zieve, MD, MHA, Bethanne Black, Stephanie Slon, and Nissi Wang.

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed physician should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. Copyright 2002 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

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