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DE QUERVAIN’S APPROACH TO THE THUMB ABDUCTOR TENDONS
USES
This is a single-use approach used to release the first dorsal extensor compartment in De Quervain’s tendinitis, releasing the abductor pollicis longus and extensor pollicis brevis tendons.
ADVANTAGES
This is a direct approach to the pathology.
DISADVANTAGES
This approach is not easily extended if other pathology is identified.
STRUCTURES AT RISK
The main structure, other than the tendons themselves, is the superficial sensory branch of the radial nerve, whose branches are typically seen in the incision.
TECHNIQUE
A 2- to 3-cm incision is made over the radial side of the forearm and carried through the dermis only. It is very important to use blunt dissection beyond that to identify the sensory branches of the radial nerve. Once those branches are protected, you will then have identified the extensor retinaculum deep to those branches, and the tendon sheath can be opened for several centimeters proximally and distally.
TRICKS