Elvan Özlem, Aktekin Mustafa, Şengezer Ecem, Olgunus Zeliha Kurtoğlu, Bayramoğlu Alp
School of Health, Mersin University, Çiftlikköy Campus, Yenişehir, 33343, Mersin, Turkey.
Department of Anatomy, School of Medicine, Mersin University, Mersin, Turkey.
Surg Radiol Anat. 2019 Dec;41(12):1497-1503. doi: 10.1007/s00276-019-02312-w. Epub 2019 Aug 30.
To determine the incidence of the iliocapsularis muscle in fetal period and its relationship with the hip joint capsule.
Twenty-one formalin-fixed fetuses (12 female and 9 male) with a mean gestational age of 29 ± 3.89 weeks (range 25-36) were dissected to reveal morphological properties of iliocapsularis muscle.
Iliocapsularis muscle was observed in 39 out of 42 sides (92%). Its proximal attachment was detected either below the proximal attachment of rectus femoris muscle in 21 out of 39 sides (54%), or it was forming a common tendon with rectus femoris on the anterior inferior iliac spine in 10 out of 39 sides (26%), or it was forming an arch along the superior-medial-inferior sides of the proximal attachment of rectus femoris muscle in 8 out of 39 sides (20%). Muscle fibers originating from the anteromedial part of hip joint capsule were also constant in all sides. Distal attachment of iliocapsularis muscle was distal to the lesser trochanter in all specimens. Its form was as a broad muscle in 32 out of 39 sides (82%) and as a thin rectangular muscular slip in 7 out of 39 sides (18%). Iliopsoas and iliocapsularis muscles had their particular fascia in 34 out of 39 sides (87%), and in the other 5 sides, there was no fascia which prominently separated the two muscles. Its length was longer in females than males (p = 0.031) and it was wider on the right side (p = 0.029). Linear functions were y = 0.49 + 0.17 × weeks and y = 6.94 + 0.89 × weeks for width and length, respectively.
Data obtained with the present study about iliocapsularis muscle in fetal period revealed that it is an individual and constant muscle. Its dimension, location, and course over the hip joint capsule support the idea that it tightens the hip capsule and stabilizes the femoral head.
确定胎儿期髂股韧带的发生率及其与髋关节囊的关系。
解剖21例福尔马林固定的胎儿（12例女性和9例男性），平均孕周为29±3.89周（范围25 - 36周），以揭示髂股韧带的形态学特征。
42侧中有39侧（92%）观察到髂股韧带。其近端附着点在39侧中的21侧（54%）位于股直肌近端附着点下方，在39侧中的10侧（26%）与股直肌在髂前下棘形成共同肌腱，在39侧中的8侧（20%）沿股直肌近端附着点的上、中、下侧形成弓状。源自髋关节囊前内侧部分的肌纤维在所有侧均恒定存在。髂股韧带的远端附着点在所有标本中均位于小转子远端。其形态在39侧中的32侧（82%）为宽阔肌肉，在39侧中的7侧（18%）为薄的矩形肌束。髂腰肌和髂股韧带在39侧中的34侧（87%）有其特定的筋膜，在另外5侧中，没有明显分隔这两块肌肉的筋膜。其长度女性长于男性（p = 0.031），右侧更宽（p = 0.029）。宽度和长度的线性函数分别为y = 0.49 + 0.17×孕周和y = 6.94 + 0.89×孕周。
本研究获得的关于胎儿期髂股韧带的数据表明，它是一块独立且恒定存在的肌肉。其在髋关节囊上的尺寸、位置和走行支持了它收紧髋关节囊并稳定股骨头的观点。
