Original communicationThe change in ulnar variance with grip☆
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2020, Clinics in Sports MedicineCitation Excerpt :It occurs more commonly in patients with positive ulnar variance. Ulnar variance is dynamic, and ulnar length increases with grip and pronation.31 Athletes who frequently perform repetitive pronation and power grip, as seen in baseball and racquet sports, may be affected by this condition.
The Parallelogram Effect: The Association Between Central Band and Positive Ulnar Variance
2018, Journal of Hand SurgeryEssex-Lopresti Injuries
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2017, Hand ClinicsCitation Excerpt :Ulnar impaction may also be dynamic and even occur in patients with an ulna neutral or negative variance during power grip in the pronated position.6 This is because of the approximate 1.95 cm of radial shortening that occurs as the radius rotates across the ulna during pronation, which leads to a dynamic impingement.7 UCI syndrome consists of the triad of a TFCC tear, a lunotriquetral (LT) ligament tear, and an ulnar positive variance.
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