cruciate ligament
From Longman Dictionary of Contemporary Englishcruciate ligamentcru‧ci‧ate lig‧a‧ment /ˈkruːʃieɪt ˌlɪɡəmənt/ noun [countable] medical one of two ligaments (=bands of strong material) in the knee that cross each other and connect the bones above and below the knee The Chelsea player suffered a torn cruciate ligament.