What is the presentation of CMC squaring?
The hallmark is pain, first on activity and then even at rest. It is localized at the base of the thumb and usually moderate in intensity, even though at times it may be incapacitating. Tenderness on palpation, crepitus on rotation, and joint limitations in fine motor skills also are typical. Grasp and proximal thumb-index pinching may be limited, and so are activities of daily living that rely on these movements, like using scissors, opening jars, or operating a can opener.
The hallmark is pain, first on activity and then even at rest. It is localized at the base of the thumb and usually moderate in intensity, even though at times it may be incapacitating. Tenderness on palpation, crepitus on rotation, and joint limitations in fine motor skills also are typical. Grasp and proximal thumb-index pinching may be limited, and so are activities of daily living that rely on these movements, like using scissors, opening jars, or operating a can opener.