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Endometriosis of the Pelvic Nerves
Published in Nazar N. Amso, Saikat Banerjee, Endometriosis, 2022
Shaheen Khazali, Marc Possover
Lumbosacral trunk consists of the anterior division of S1, L5 and part of L4. The obturator nerve at the level of pelvic brim is around 1–2 cm superior and slightly medial to the lumbosacral trunk. It runs at the medial aspect of the psoas major muscle.
Diseases of the Peripheral Nerve and Mononeuropathies
Published in Philip B. Gorelick, Fernando D. Testai, Graeme J. Hankey, Joanna M. Wardlaw, Hankey's Clinical Neurology, 2020
Diana Mnatsakanova, Charles K. Abrams
The first sensory branch of the lumbar plexus (Figure 25.38): Arises from the L2 and L3 nerve roots.Emerges from the lateral border of the psoas major muscle and courses along the brim of the pelvis to the lateral end of the inguinal ligament.Reaches the upper thigh after passing through a tunnel formed by the lateral attachment of the inguinal ligament and the anterior superior iliac spine.About 12 cm (4.7 in) below the exit from the tunnel, the nerve gives off an anterior branch, which supplies the skin over the lateral and anterior surface of the thigh, and a posterior branch which innervates the lateral and posterior portion of the thigh.
SBA Answers and Explanations
Published in Vivian A. Elwell, Jonathan M. Fishman, Rajat Chowdhury, SBAs for the MRCS Part A, 2018
Vivian A. Elwell, Jonathan M. Fishman, Rajat Chowdhury
The psoas major muscle joins the iliacus muscle, which originates broadly over the inner aspect of the iliac wing of the pelvis. This becomes the iliopsoas muscle and inserts on the lesser trochanter of the femur and thus flexes the thigh at the hip joint. The action of this muscle results in the leg becoming shortened and externally rotated following a fracture of the neck of the femur.
Effects of backrest and seat-pan inclination of tractor seat on biomechanical characteristics of lumbar, abdomen, leg and spine
Published in Computer Methods in Biomechanics and Biomedical Engineering, 2023
Qichao Wang, Yihuan Huo, Zheng Xu, Wenjie Zhang, Yujun Shang, Hongmei Xu
In this study, the muscles with high activities, including gluteus maximus, semitendinosus, Rectus femoris, iliopsoas, vastus lateralis and sartorius, were analyzed, and those muscles with low activities or small muscle tissues were not taken into account. Gluteus maximus has a wide and thick quadrilateral shape, and mainly drives the extension and external rotation of the thigh. Semitendinosus is located at the back of the thigh and helps the extension of the hip joint and bending of the knee joint. Rectus femoris is located in the front of the thigh, whose main function is to extend the knee joint and bend the thigh. Iliopsoas is composed of psoas major muscle and iliacus, which is mainly responsible for the external rotation of the thigh and forward flexion of the pelvis and trunk. The sartorius is flat and banded, and is one of the longest in the leg muscles, starting from the anterior superior iliac spine, passing through the inner side of the knee joint, and finally to the inner side of the upper end of the tibia. The main function of sartorius is for the bending of the hip and knee.
Heterotopic pregnancy after bilateral salpingectomy, IVF and multiple embryos transfer. A case report and systematic review of the literature
Published in Journal of Obstetrics and Gynaecology, 2022
Grigorios Karampas, Andreas Zouridis, Evangelia Deligeoroglou, Dimitra Metallinou, Theodoros Panoskaltsis, Konstantinos Panoulis, Martin Rudnicki, Nikolaos Vlahos
In most of the cases (57%) the ectopic implanted conceptus was ruptured prior to admission at the hospital. Of all women, 25% were asymptomatic, 46% presented with abdominal pain, 21% with vaginal bleeding and 7% with weakness or unstable vital signs. Rare symptoms, depending mostly on the location of the EP, were one case of massive rectal bleeding due to an EP on the terminal ileum and one case of left back pain due to an EP on the left psoas major muscle. Most of them (78.5%) were diagnosed preoperatively with ultrasound, but in five cases the diagnosis was made only after laparotomy. The majority of ectopic pregnancies were interstitial (50%), while tubal stump, ovarian, abdominal and retroperitoneal pregnancies followed with 11%, 3.5%, 21% and 7% respectively.
Infectious spondylodiscitis: 5-year analysis of a tertiary hospital in Portugal
Published in Infectious Diseases, 2018
Ana Ponciano, Gonçalo Cruz, Conceição Ventura, Eduardo Rabadão, José Saraiva da Cunha
The vertebral segments most frequently involved were lumbar (63.7%) and dorsal in 23.7% of patients. Almost 5% of patients with lumbar involvement also presented with concomitant cervical vertebrae infection. Imaging studies were performed in all patients, usually computed tomography associated with magnetic ressonance. Evidence of vertebral anomalies suggestive of spondylodiscitis were found in 74% of patients subjected to computed tomography and 91.9% of those undergoing magnetic ressonance imaging. However, 8.1% of patients did not present any abnormality in these investigations. In 37 patients, there was evidence of abscess, 70% paravertebral and 29.7% with involvement of the psoas major muscle.