[TA] the early union, by hyaline cartilage, of the manubrium and the body of the sternum, which later becomes a symphysial type of joint. Synonym(s): synchondrosis manubriosternalis [TA]
ma·nu·bri·o·ster·nal joint
(mă-nū'brē-ō-stĕr'năl joynt) [TA] The early union, by hyaline cartilage, of the manubrium and the body of the sternum, which later becomes a symphysial type of joint.