Hip Preservation Center, Baylor University Medical Center, Dallas, TX, USA.
Texas A&M Health Science Center College of Medicine, Dallas, TX, USA.
Acta Radiol. 2024 Sep;65(9):1080-1086. doi: 10.1177/02841851241263584. Epub 2024 Jul 23.
The capsular ligaments at the hip joint work in synchrony with the acetabulum and femoral head for articular stability. There is a lack of understanding about ischiofemoral ligament (ISFL) anatomy and function.
To assess the insertion of the ISFL in non-arthritic adult hips.
A retrospective analysis was performed in 72 patients who underwent magnetic resonance arthrogram (MRA) for the assessment of hip pain. The distribution of the ISFL components, the thickness, and the insertion site were assessed by concomitantly using the axial oblique, coronal, and sagittal MRA images.
Two insertions of the ISFL anterior to the center of the femoral head were identified in 71 (99%) hips: (i) predominant anterior merging with the iliofemoral ligament as continuation of zona orbicularis, observed in all hips; and (ii) anterolateral junction of femoral neck and greater trochanter. Two ISFL parts (proximal and distal) were identified in 70 (97%) of the 72 studied hips. The proximal part was always thinner (mean 2.6 ± 0.7 mm) and originated from the ischium at the acetabular rim. The distal part was a continuation of the zona orbicularis, and the mean thickness was 6.7 ± 1.6 mm. Both parts merged as they coursed over the superior portion of the femoral head.
The predominant insertion of the ischiofemoral ligament is a merging to the iliofemoral ligament anteriorly. Surgical procedures such as hip arthroscopy involving the ISFL will affect the function of the iliofemoral ligament, and vice versa.
髋关节的囊状韧带与髋臼和股骨头同步工作，以维持关节稳定性。人们对坐骨股骨韧带（ISFL）的解剖结构和功能缺乏了解。
评估非关节炎成人髋关节中 ISFL 的插入位置。
对 72 例因髋关节疼痛接受磁共振关节造影术（MRA）评估的患者进行回顾性分析。通过同时使用轴向斜位、冠状位和矢状位 MRA 图像评估 ISFL 成分的分布、厚度和插入部位。
在 71 髋（99%）中发现 ISFL 有两个位于股骨头中心前的插入点：（i）主要的前向插入点与股髂韧带融合，作为环状区的延续，在所有髋关节中均可见；（ii）股颈前外侧与大转子的连接点。在 72 个研究髋关节中的 70 个（97%）中识别出 ISFL 的两个部分（近端和远端）。近端部分始终较薄（平均 2.6±0.7mm），起源于髋臼边缘的坐骨。远端部分是环状区的延续，平均厚度为 6.7±1.6mm。两个部分在越过股骨头的上部时合并。
ISFL 的主要插入点是向前与股髂韧带融合。涉及 ISFL 的髋关节镜等手术程序将影响股髂韧带的功能，反之亦然。
