Foucart J M, Girin J P, Carpentier P
Department of Oral Anatomy, Faculty of Dentistry, University Denis Diderot Paris VII, France.
Surg Radiol Anat. 1998;20(3):185-9. doi: 10.1007/BF01628893.
The one- or two-headed arrangement of the lateral pterygoid m. (LPM) was analysed by studying the motor nerve distribution within the muscular tissue. In all subjects, the main innervation of the lateral pterygoid m. came from the anterior trunk of the mandibular n. by one to three nerves. These nerves divided into five or six vertical branches which ramified into parallel horizontal tiny fibers. Consequently, the lateral pterygoid m. appeared to be divided into oblique sagittal planes and horizontal layers by the nerve branches, reflecting the multipennate organisation of the muscle. These layers can be selectively recruited during mandibular movements, ensuing a fine medial-lateral control. According to its nerve supply, the LPM has to be considered as a single unit made of independent functional musulo-aponeurotic layers even though its morphologic conformation is in one, two or three heads.
通过研究翼外肌（LPM）肌肉组织内的运动神经分布，对其单头或双头排列进行了分析。在所有受试者中，翼外肌的主要神经支配来自下颌神经前干，由一至三条神经支配。这些神经分成五或六条垂直分支，再分支成平行的水平细纤维。因此，翼外肌似乎被神经分支分成斜矢状平面和水平层，反映了肌肉的多羽状结构。在下颌运动过程中，这些层可以被选择性地募集，从而实现精确的内外侧控制。根据其神经供应，尽管翼外肌的形态结构为单头、双头或三头，但必须将其视为由独立的功能性肌-腱膜层组成的单一单元。
