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Scapholunate dissociation on clenched fist view

Widening of the scapholunate interval greater than 3 mm on an anterior-posterior (AP) clenched fist view (arrow) suggests scapholunate dissociation due to ligament rupture.

From: Oatis CA. Structure and function of the bones and joints of the wrist and hand. In: Kinesiology. Lippincott Williams & Wilkins 2016. Copyright © 2016. Reproduced with permission from Wolters Kluwer Health. Unauthorized reproduction of this material is prohibited.

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