Phalen's maneuver

Phalen's maneuver or Phalen's test is a diagnostic procedure used to identify Carpal Tunnel Syndrome (CTS), a common condition affecting the hand and wrist. The test was named after its inventor, Dr. George S. Phalen, an American orthopedic surgeon who made significant contributions to the understanding and treatment of CTS.

Procedure

The Phalen's maneuver is performed by having the patient flex their wrists and press the backs of their hands together for about 60 seconds. This position compresses the median nerve in the carpal tunnel. If the patient experiences tingling, numbness, or pain in the fingers within the time frame, it is considered a positive sign for Carpal Tunnel Syndrome.

Accuracy

The accuracy of Phalen's maneuver in diagnosing CTS varies among studies, but it is generally considered a reliable test when used in conjunction with other diagnostic methods such as Tinel's sign and Electromyography (EMG). It is less sensitive but more specific compared to Tinel's sign.

Limitations

While Phalen's maneuver is a useful diagnostic tool, it has its limitations. It may not be positive in all cases of CTS, especially in the early stages of the condition. Furthermore, a positive test does not necessarily confirm CTS, as other conditions can also cause median nerve compression.

See also

• Carpal Tunnel Syndrome
• Tinel's sign
• Electromyography

References

• Phalen GS. The carpal-tunnel syndrome. Clinical evaluation of 598 hands. Clin Orthop Relat Res. 1972;(83):29-40.
• DeKrom MC, Knipschild PG, Kester AD, et al. Efficacy of provocative tests for diagnosis of carpal tunnel syndrome. Lancet. 1990;335(8686):393-395.