Title: Understanding De Quervain’s Pathology: A Comprehensive Exploration of Special Tests

Understanding De Quervain’s Pathology: A Comprehensive Exploration of Special Tests

By: Miranda Materi

De Quervain’s and Special Tests

De Quervain’s tenosynovitis is a condition characterized by inflammation of the tendons on the thumb side of the wrist, causing pain and discomfort. These tendons include Abductor Pollicis Longus (APL) and Extensor Pollicis Brevis as they pass through the first dorsal compartment.    The various special tests play a crucial role in identifying and confirming this pathology. In this blog post, we will cover three specific tests: Finkelstein’s, Eichhoff’s, and the Wrist Hyperflexion and Abduction Test (WHAT). We will also explore their significance in diagnosing De Quervain’s tenosynovitis.

Finkelstein’s Test: Unraveling the Classic Maneuver

Finkelstein’s test is a well-known and widely used diagnostic maneuver for assessing De Quervain’s tenosynovitis. During this test, the patient’s wrist is placed on the edge of a table, and they are asked to actively ulnarly deviate the wrist before the examiner grasps the patient’s thumb, passively flexing it into the palm. A positive finding includes pain along the radial side of the wrist, particularly over the first dorsal compartment, indicating of inflammation in the abductor pollicis longus and extensor pollicis brevis tendons. (Wu, Rajpura, & Sandher, 2018).

Eichhoff’s Test: Clarifying the Confusion

Eichhoff’s test, often confused with Finkelstein’s, involves a different maneuver. In this test, the participant is instructed to place the thumb within the hand and clench tightly with the other fingers. The examiner can palpate the abductor pollicis longus and extensor pollicis brevis tendons over the lateral radius, feeling for moving nodularity, tendon rub, or popping directly over the tendon. (Wu, Rajpura, & Sandher, 2018).

Over the years, a misinterpretation has occurred between these two tests, with Eichhoff’s being confused with Finkelstein’s. Hand therapists need to differentiate between these maneuvers for accurate diagnosis and appropriate treatment.

The WHAT Test: A Novel Approach

To compare Eichhoff’s test with a new diagnostic tool, a prospective study was conducted over three years involving a cohort of 100 patients (88 women, 12 men) experiencing spontaneous pain over the radial side of the styloid of the radius (de Quervain’s tendinopathy). The Wrist Hyperflexion and Abduction of the Thumb (WHAT) test was introduced.

The Wrist Hyperflexion and Abduction of the Thumb (WHAT) test presents several advantages over traditional tests like Eichhoff’s and Finkelstein’s in the diagnosis of De Quervain’s tenosynovitis. The WHAT test combines hyperflexion and abduction of the wrist. This unique combination aims to reproduce symptoms more effectively by stressing the tendons involved in De Quervain’s pathology, providing a broader and potentially more accurate assessment. (Goubau et al., 2014).

Additionally, the WHAT test may offer improved sensitivity and specificity, allowing for a more reliable diagnosis. By incorporating both hyperflexion and abduction, it comprehensively evaluates the involvement of the abductor pollicis longus and extensor pollicis brevis tendons, enhancing the clinician’s ability to identify subtle abnormalities. As hand therapy and hand surgery literature evolves, the WHAT test represents a progressive step in refining diagnostic approaches for De Quervain’s tenosynovitis, offering a test that may contribute to enhanced diagnostic accuracy and patient care.

In conclusion, understanding the nuances of Finkelstein’s, Eichhoff’s, and the WHAT is essential for accurate diagnosis and effective management of De Quervain’s tenosynovitis.

References:

Goubau, J. F., Goubau, L., Van Tongel, A., Van Hoonacker, P., Kerckhove, D., & Berghs, B. (2014). The wrist hyperflexion and abduction of the thumb (WHAT) test: a more specific and sensitive test to diagnose de Quervain tenosynovitis than the Eichhoff’s Test. The Journal of hand surgery, European volume39(3), 286–292. https://doi.org/10.1177/1753193412475043

Wu, F., Rajpura, A., & Sandher, D. (2018). Finkelstein’s Test Is Superior to Eichhoff’s Test in the Investigation of de Quervain’s Disease. Journal of hand and microsurgery10(2), 116–118. https://doi.org/10.1055/s-0038-1626690

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