Grob Karl, Manestar Mirjana, Gascho Dominic, Ackland Timothy, Gilbey Helen, Fretz Christian, Kuster Markus S
Department of Orthopaedic Surgery, Rorschacher Strasse 95, CH-9007, St. Gallen, Switzerland.
Department of Anatomy, University of Zürich-Irchel, Winterthurerstrasse 190, Zürich, CH-8057, Switzerland.
Clin Anat. 2017 Nov;30(8):1096-1102. doi: 10.1002/ca.22981. Epub 2017 Sep 4.
The tensor of the vastus intermedius (TVI) is a newly described component of the extensor apparatus of the knee joint. The objective of this study was to evaluate the appearance of the TVI on magnetic resonance (MR) imaging and its association with the adjacent vastus lateralis (VL) and vastus intermedius (VI) muscles and to compare these findings with the corresponding anatomy. MR images were analyzed from a cadaveric thigh where the TVI, as part of the extensor apparatus of the knee joint, had been dissected. The course of the TVI in relation to the adjacent VL and VI was studied. The anatomic dissection and MR imaging revealed a multilayered organization of the lateral extensor apparatus of the knee joint. The TVI is an intervening muscle between the VL and VI that combined into a broad flat aponeurosis in the midthigh and merged into the quadriceps tendon. Dorsally, the muscle fibers of the TVI joined those of the VL and VI and blended into the attachment at the lateral lip of the linea aspera. In this area, distinguishing between these three muscles was not possible macroscopically or virtually by MR imaging. In the dorsal aspect, the onion-like muscle layers of the VL, TVI, and VI fuse to a hardly separable muscle mass indicating that these muscles work in conjunction to produce knee extension torque when knee joint action is performed. Clin. Anat. 30:1096-1102, 2017. © 2017 Wiley Periodicals, Inc.
股中间肌张量（TVI）是膝关节伸肌装置新描述的一个组成部分。本研究的目的是评估TVI在磁共振成像（MR）上的表现及其与相邻的股外侧肌（VL）和股中间肌（VI）的关系，并将这些发现与相应的解剖结构进行比较。对一具尸体大腿的MR图像进行分析，该大腿的TVI作为膝关节伸肌装置的一部分已被解剖。研究了TVI相对于相邻VL和VI的走行。解剖学解剖和MR成像显示膝关节外侧伸肌装置有多层结构。TVI是VL和VI之间的一块中间肌肉，在大腿中部合并成一个宽阔扁平的腱膜，并融入股四头肌肌腱。在背侧，TVI的肌纤维与VL和VI的肌纤维相连，并融入到粗线外侧缘的附着处。在这个区域，通过宏观观察或MR成像实际上无法区分这三块肌肉。在背侧，VL、TVI和VI的洋葱样肌层融合成一个几乎无法分离的肌肉团块，表明在进行膝关节活动时，这些肌肉协同作用以产生膝关节伸展扭矩。《临床解剖学》2017年第30卷：1096 - 1102页。© 2017威利期刊公司。
