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Carpal Tunnel Injection

General Information

Carpal tunnel syndrome is a condition that creates weakness and pain in the wrist, hands or fingers. The carpal tunnel is a literal tunnel or passageway extending from the base of the palm at the wrist joint and into the wrist. The carpal tunnel protects tendons, ligaments and nerves in the hand. Carpal tunnel injections are performed with corticosteroids. Corticosteroids

Reasons for Carpal Tunnel Injections

  • Relieve pain
  • Restore strength and function in the fingers, hand and wrist
  • Reduce tingling or numbness in the fingers and hand


Prior to a carpal tunnel injection, your doctor may perform a variety of tests, including:

  • Physical examination
  • Nerve conduction study
  • Electromyogram
  • Electroneurography studies

Carpal Tunnel Injection Procedure

  • Your doctor will determine the best injection site for the treatment, usually into the ulnar bursa, which surrounds the median nerve. He will mark the site.
  • Your doctor will arrange your hand palm side up.
  • The doctor will then inject a mixture of lidocaine and steroids (such as a combination of dexamethasone and triamcinolone in the proximity of the median nerve and the Palmaris longus tendon.

What to Expect

The carpal tunnel injection is relatively painless. You may feel a slight sting as the needle is injected into the site. Your doctor may apply or inject a small amount of topical anesthetic to reduce pain. Following the injection, you may be required to wear a splint, especially at night. You may not begin to feel the effects of the injection for between one to seven days following the injection.