Whyte Orozco Jaime Rafael, Cisneros Gimeno Ana Isabel, Yus Gotor Carmen, Obón Nogues Jesús Angel, Pérez Sanz Raúl, Gañet Solé José Francisco, Fraile Rodrigo Jesús José
Departamento de Anatomía e Histología Humanas, Universidad de Zaragoza, Zaragoza, España.
Acta Otorrinolaringol Esp. 2008 Oct;59(8):384-9.
To study the development of the incudostapedial joint in human embryos and foetuses.
46 temporal bones with specimens between 9 mm and newborns were studied. The preparations were sliced serially and dyed using the Martins trichrome technique.
The incudostapedial joint takes on the characteristics of a spheroidal joint at 16 weeks of development. The cartilage covering the articular surfaces is formed by different strata that develop in succession: the superficial stratum at 19 weeks, the transitional between 20 and 23 weeks, and the radial from 24 weeks on. The subchondral bone develops after 29 weeks by the mechanisms of apposition and extension of the periosteal and endosteal bones, but it is not until week 34 that it completely covers the articular surfaces, following constitution of the bone fascicles transmitting the lines of force. The articular capsule is formed from the inter-zone, the surface zone develops the capsular ligament, and the internal surface develops the synovial membrane.
At the time of birth, the incudostapedial joint is completely developed.
研究人类胚胎和胎儿砧镫关节的发育情况。
研究了46块颞骨标本，其长度在9毫米至新生儿之间。标本经连续切片，采用马丁三色染色技术染色。
砧镫关节在发育16周时呈现球窝关节的特征。覆盖关节面的软骨由不同层次依次形成：19周时形成表层，20至23周时为过渡层，24周及以后为放射状层。软骨下骨在29周后通过骨膜骨和骨内膜骨的附着和延伸机制发育而成，但直到34周，在传递力线的骨束形成后，它才完全覆盖关节面。关节囊由中间区域形成，表面区域发育为囊韧带，内表面发育为滑膜。
出生时，砧镫关节已完全发育。
