Gaudy J F, Zouaoui A, Bravetti P, Charrier J L, Guettaf A
Institut d'Anatomie, U.F.R. Biomédicale des Saints-Pères, Paris V, 45, rue des Saints-Pères, F-75270 Paris, France.
Surg Radiol Anat. 2000;22(3-4):181-90. doi: 10.1007/s00276-000-0181-5.
The authors carried out an anatomic and magnetic resonance imaging study of the architecture of the elevator muscles of the mandible in 169 cadavers. The aim of this study was to define the architectural organization of the human masseter muscle, temporalis and pterygoid muscles. Layered dissections and anatomic sections in different spatial planes showed that the masseter muscle exhibited a typical pennate structure consisting of a succession of alternating musculoaponeurotic layers. The muscle had three well-differentiated parts: the superficial, intermediate and deep masseter muscles. The same pattern was constantly found: 1) for the superficial masseter, two alternate musculoaponeurotic layers oriented at 60 degrees in relation to the plane of occlusion, 2) for the intermediate masseter, a single musculo-aponeurotic layer oriented at 90 degrees in relation to the occlusal plane, 3) for the deep masseter, three musculoaponeurotic layers whose general orientation was at 90 degrees for the bounding layers and 110 degrees for the intermediate layer. The MRI study confirmed the reality of this architectural arrangement.
作者对169具尸体的下颌骨上提肌结构进行了解剖学和磁共振成像研究。本研究的目的是确定人类咬肌、颞肌和翼状肌的结构组织。在不同空间平面进行的分层解剖和解剖切片显示，咬肌呈现出典型的羽状结构，由一系列交替的肌-腱膜层组成。该肌肉有三个明显不同的部分：浅层咬肌、中层咬肌和深层咬肌。始终发现相同的模式：1）对于浅层咬肌，两个交替的肌-腱膜层相对于咬合平面呈60度定向；2）对于中层咬肌，单个肌-腱膜层相对于咬合平面呈90度定向；3）对于深层咬肌，三个肌-腱膜层，其边界层的总体定向为90度，中间层为110度。MRI研究证实了这种结构排列的真实性。
