Anatomy General d7562cca Paralysis of which of the following muscle causes froment's sign? A Opponen's pollicis B Abductor pollicis C Adductor pollicis D Adductor hallucis longus High-Yield Explanation Pen test - Median NerveCard test - Ulnar Nerve Egawas test - Ulnar Nerve Froment's sign - Ulnar N.