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Emerging concepts in arthroscopic hip preservation surgery: Labral reconstruction and capsular preservation
Published in K. Mohan Iyer, Hip Preservation Techniques, 2019
Victoria Das, Michael B. Ellman, Sanjeev Bhatia
Most notable is the iliofemoral ligament anteriorly that functions to restrain the femoroacetabular joint from anterior translation during leg extension. The function of the iliofemoral ligament is aided only by the zona orbicularis, a fibrous ring that tightens during hip extension and loosens during hip flexion.14,24 The result is a “screw home” mechanism that provides tremendous stability to the femoroacetabular joint during human movement.
Lower limb
Published in David Heylings, Stephen Carmichael, Samuel Leinster, Janak Saada, Bari M. Logan, Ralph T. Hutchings, McMinn’s Concise Human Anatomy, 2017
David Heylings, Stephen Carmichael, Samuel Leinster, Janak Saada, Bari M. Logan, Ralph T. Hutchings
Iliofemoral ligament - most important of the ligaments that reinforce the capsule and one of the strongest in the body (because the body’s centre of gravity passes posterior to the joint, so the ligament resists the tendency to tilt backwards - hip extension), it is shaped like an inverted Y and attaches from the anterior inferior iliac spine to the lateral and medial ends of the intertrochanteric line. (Note: Its eponym is the ‘inverted’ Y ligament of Bigelow.)
The Articulations of the Lower Member
Published in Gene L. Colborn, David B. Lause, Musculoskeletal Anatomy, 2009
Gene L. Colborn, David B. Lause
Three ligaments are particularly important in thickening the articular capsule and providing strength to the articulation. These include the iliofemoral, pubofemoral and ischiofemoral ligaments. The most important of these is the iliofemoral ligament, one of the strongest ligaments of the body. It helps to prevent hyperextension of the hip joint. The ischiofemoral ligament helps prevent excessive medial rotation of the femur.
Hip physical examination extension loss and radiographic osseous findings in patients with low back pain and nonarthritic hips
Published in Baylor University Medical Center Proceedings, 2022
Richard Feng, Munif Hatem, Scott J. Nimmons, Ashley Disantis, RobRoy L. Martin, Hal David Martin
In patients with femoral torsion abnormalities, the ligamentous structures play a role in limiting HE. Patients with increased femoral torsion and laxity of the iliofemoral ligament may be able to further extend the hip due to anterior subluxation of the femoral head with a posterior levering mechanism. In contrast, HE limitation would be observed in hips with increased femoral torsion and a tight iliofemoral ligament. The effects of this mechanism were observed in the present study. Hips with increased femoral torsion were able to further extend with the addition of internal rotation, which simultaneously relaxes the iliofemoral ligament and avoids premature coupling between the posterior femoral neck and acetabulum. For hips with decreased femoral torsion, the migration of the iliofemoral ligament medial arm superolaterally to the femoral head likely explains why additional HE is achieved with external rotation. This effect depends on the degree of hip abduction, the femoral neck shaft angle, and the relationship between the origin and insertion of the iliofemoral ligament medial arm in the coronal plane. Hips with decreased femoral torsion may not present limitation in extension due to lax pubofemoral, iliofemoral, and ischiofemoral ligaments. Therefore, femoral torsion and ligamentous structures have a close relationship in controlling HE. Of note, a cam deformity was not considered an obvious osseus finding of limited HE in the present study. However, a superiorly located cam deformity has the potential to tighten the iliofemoral and ischiofemoral ligaments, limiting HE.
Non-pharmacological treatments for chronic orchialgia: A systemic review
Published in Arab Journal of Urology, 2021
Kareim Khalafalla, Mohamed Arafa, Haitham Elbardisi, Ahmad Majzoub
A single randomised clinical trial by Tantawy et al. [28] was conducted on 71 patients with CO who were randomised into a study group (analgesia + TENS, n = 36) and a control group (analgesia alone, n = 35). The TENS was performed five-times per week for 4 weeks, where the anode electrode was placed in the suprapubic area medial to the iliofemoral ligament and the cathode 5 cm proximal to it. A mean TENS intensity of 25 mA was used. The results revealed that a significant reduction in the VAS pain score was noted only in the study group (mean [SD] 7.35 [1.13] vs 4.45 [0.88], P < 0.001) 2 months after the intervention and not in the control group. Furthermore, a significant improvement in patients’ quality of life (QoL) was also only reported by the study group.
Development and calibration of a probabilistic finite element hip capsule representation
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2020
Casey A. Myers, Clare K. Fitzpatrick, Daniel N. Huff, Peter J. Laz, Paul J. Rullkoetter
The calibrated mean stiffness values for the ischiofemoral, iliofemoral and pubofemoral ligaments (Table 1) were within the ranges found during mechanical testing of the isolated structures reported in the literature (Hewitt et al. 2001; Pieroh et al. 2016). In addition to accurately predicting whole joint behavior, this study agrees with prior work which has shown the anterior capsular ligaments, made up of the iliofemoral and a section of pubofemoral, demonstrates greater linear stiffness values than the posterior ligaments (Pieroh et al. 2016). Previous clinical studies have demonstrated dislocation rates for posterior approach can drop from 3–5% to approximately 0.65% when the capsule is repaired (Goldstein et al. 2001; White et al. 2001). The zona orbicularis and ischiofemoral ligaments provided the primary resistance to a motion association with a posterior dislocation. In addition, the medial aspect of the iliofemoral ligament provided the primary resistance to a motion associated with anterior dislocation, with some additional support from the lateral iliofemoral (Figure 5). Understanding which structures in the capsule contribute most to hip stability helps in deciding which areas to avoid or to repair during a surgical approach to minimize complications related to joint instability. In addition, knowledge of the mechanical properties of the hip ligaments assists in designing strategies to repair the capsule after traumatic injury.