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Anatomy of the Pelvis
Published in Gowri Dorairajan, Management of Normal and High Risk Labour During Childbirth, 2022
Sacrotuberous ligament is a flat band of immense strength; it blends with the posterior sacroiliac ligament and attaches to the posterior border of the ilium, posterior superior and inferior spines and to the transverse tubercles of the sacrum below the auricular surface and upper part of the coccyx. From this extensive attachment, the ligament extends to the medial surface of the ischial tuberosity. A forward prolongation from the ischial attachment of this ligament attaches to a curved bony ridge termed as “falciform process”. This ligament is considered to be a remnant or degenerated tendon of the long head of the biceps femoris. It provides attachment to the gluteus maximus on the posterior surface. It is pierced by perforating cutaneous nerves and branches of inferior gluteal vessels and coccygeal nerves.
Pelvis
Published in Harold Ellis, Adrian Kendal Dixon, Bari M. Logan, David J. Bowden, Human Sectional Anatomy, 2017
Harold Ellis, Adrian Kendal Dixon, Bari M. Logan, David J. Bowden
The sacroiliac joint (18) is a synovial joint. Since, as can be seen in this section, the sacral component is markedly wider anteriorly than posteriorly, the weight of the body tends to project it forward. This is resisted by the powerful posterior sacroiliac ligament on either side.
Pain Management with Regenerative Injection Therapy
Published in Mark V. Boswell, B. Eliot Cole, Weiner's Pain Management, 2005
Felix S. Linetsky, Richard Derby, Rafael Miguel, Lloyd Saberski, Michael Stanton-Hicks
Substance P has been recently identified in chronically painful posterior sacroiliac ligaments, joint capsule, and periarticular adipose tissue. There is a strong possibility that it may be present at chronically painful enthesopathy sites throughout the body (Fortin, Vilensky, & Merkel, 2003).
Lumbopelvic Fixation Versus Novel Adjustable Plate for Sacral Fractures: A Retrospective Comparative Study
Published in Journal of Investigative Surgery, 2020
Ruipeng Zhang, Yingchao Yin, Shilun Li, Ao Li, Zhiyong Hou, Yingze Zhang
It was reported that unilateral lumbopelvic fixation could provide adequate stability for sacral fractures [13, 20, 24]. Then, fixation failure was not observed in the patients fixed with lumbopelvic technique. A biomechanical study demonstrated that both vertical and torsional stability of Tile C pelvic fractures could be obtained through novel adjustable plate fixation [25]. For the patients associated with sacral fractures, the stability of sacroiliac joint may be maintained because major traumatic energy was imposed on sacrum and there were lots of powerful ligaments (including anterior and posterior sacroiliac ligaments) surrounding the sacroiliac joint. Disruption of sacroiliac joint was not observed in the patient presented in Figure 5. Thus, the reduction force imposed on PSISs could transmit to fracture sites via sacroiliac joint. For the patients with comminuted fragments in sacral wing, screw insertion in sacrum was not recommended to avoided secondary displacement and screw misplacement. Thus, screw fixation was not involved in sacrum bilaterally. The stability of posterior pelvic ring was restored and maintained by the inserted device (bilayer cortical screw fixation), bilateral sacroiliac joints and surrounding ligaments. Thus, fixation failure was not observed.
PNF- based Gait Rehabilitation-training after a Total Hip Arthroplasty in congenital pelvic malformation; A case report
Published in Physiotherapy Theory and Practice, 2022
Fred Smedes, Marianne Heidmann, James Keogh
Since the pelvic girdle has not been developed, in the described case, the stability of the pelvis likely depends on the strength of the sacroiliac ligaments. This involves the anterior sacroiliac ligaments, the interosseous ligaments, and the posterior sacroiliac ligaments in the posterior area (Verbruggen and Nowlan, 2017). In the inferior parts, the Sacro-tuberous and sacrospinous ligaments connect the ilia to the sacrum and are continuous with the pelvic floor and hamstrings (Vleeming et al., 2012; Vrahas, 1997). This posterior weight bearing complex is essential for normal weight bearing and force distribution from propulsion forces (Vleeming et al., 2012; Vrahas, 1997).
Influence of energy absorbers on Malgaigne fracture mechanism in lumbar-pelvic system under vertical impact load
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2019
K. Arkusz, T. Klekiel, G. Sławiński, R. Będziński
The maximum elongation of pelvic ligaments indicating elongation greater than 1% under vertical impact load were shown in Table 5. The analysis of the mechanism of Malgaigne fracture indicated that the first injury was anterior sacroiliac ligament tears in 4.3–5 ms (elongation: 14.78–17.93%). Next, microtrauma to the sacrospinous and sacrotuberous ligaments (elongation: 1.19–3.93%) was observed. The posterior sacroiliac ligament tears were observed after that stress recorded in left pelvic bone exceed the ultimate stress and indicated its fracture (8–8.5 ms).