Publications by authors named "Ortiz-Sagrista J"
Anatomical Relationships of the Proximal Attachment of the Hamstring Muscles with Neighboring Structures: From Ultrasound, Anatomical and Histological Findings to Clinical Implications.
Diagnostics (Basel)
August 2024
Article Synopsis
- The study investigates the relationships between the proximal attachments of hamstring muscles and surrounding structures using ultrasound and anatomical samples from 97 hemipelvis specimens.
- Results show distinct hyperechogenic lines surrounding the origins of the semimembranosus and biceps femoris, and reveal that the semimembranosus muscle has a more proximal origin compared to other hamstring muscles.
- The findings suggest that these anatomical connections may help explain the common injuries at the origins of the hamstring muscles.
Article Synopsis
- - The study focused on the semimembranosus muscle and its tendons, highlighting their anatomical features and relevance to knee pathologies through ultrasound examination and dissection.
- - Researchers examined 38 adult and 4 fetal knee specimens to analyze the muscle's anatomy and functions, noting significant tendon divisions, muscle rotation, and key measurements of the structure.
- - Findings showed important anatomical relationships that aid in understanding knee issues, which can enhance diagnosis and rehabilitation strategies following knee surgery.
Article Synopsis
- This study examined the shoulder anatomy in adults, focusing on the muscles and their relationships using ultrasound, dissection, and microscopic techniques on 34 human shoulders.
- The findings showed that while ultrasound and dissection measurements are correlated, dissection provided more accurate thickness measurements for tendons and fascia, except for a few specific cases.
- The research highlighted significant anatomical interconnections between shoulder structures, indicating that injury to one area could affect adjacent tissues, and provided reference values for tendon and fascia thicknesses, with no gender differences observed.
Purpose: Compartment syndrome is a surgical emergency that can occur in any part of the body and can cause cell necrosis when maintained over time. The resulting defects can affect the nerves, muscle cells, bone tissue, and other connective tissues inside the compartment, and fasciotomy has to be performed. The anatomical and histological characteristics of the leg make acute, chronic, and exertional compartment syndrome more likely in this limb.
View Article and Find Full Text PDFBackground: Ulnar nerve entrapment is one of the most common entrapment neuropathies, usually occurring in the cubital tunnel of the elbow and in Guyon's canal of the wrist. However, it can also occur at other anatomical locations.
Purpose: Our aim was to review other possible locations of ulnar nerve entrapment in an ultrasound and anatomical study.
Aim: This study aimed to (1) determine the intraobserver and interobserver reliability of ultrasonographic measurement of muscle thickness (MT) and cross-sectional area (CSA) of the rectus femoris and biceps brachii, correlating these values with manual measurements on dissected cadavers and (2) develop the first semiquantitative musculoskeletal ultrasound (MSUS) scoring system of muscle morphology in sarcopenia and assess its intraobserver and interobserver reliability. In addition, the MSUS morphology score was compared with the corresponding histological images to verify concurrent validity.
Methods: Ten cryopreserved limbs of 10 cadavers aged 68-91 years were evaluated.
Purpose: Acute compartment syndrome is defined as a limb-threatening condition caused by bleeding or oedema in a closed muscle compartment surrounded by fascia or bone. It is most commonly encountered in the forearm, which has three compartments: posterior, anterior and lateral. These are surrounded and closed in by the antebrachial fascia, formed by dense connective tissue that facilities their study on ultrasound and is key to fasciotomy treatment.
View Article and Find Full Text PDFThe fascia is an undifferentiated mesenchymal tissue related to the peripheral nerves. Both can be identified by ultrasound, which is useful when performing peripheral nerve blocks. However, there is no unanimity about the approaching point of each nerve, nor is there a consensus on how to name the appropriate infiltration zone, although the paraneural zone is frequently mentioned.
View Article and Find Full Text PDFAnatomical causes of compression of the sciatic nerve in the pelvis. Piriform syndrome.
Rev Esp Cir Ortop Traumatol (Engl Ed)
April 2020
Objective: The piriformis syndrome is one of the etiologies of pelvic pain due to the sciatic nerve's entrapment by the piriformis muscle. Nowadays this syndrome might be difficult to be diagnosed. The aim of this study is to know the prevalence of anatomic variations in our population that may contribute to the appearance of piriformis syndrome.
View Article and Find Full Text PDFObjectives: Ultrasound-guided puncture is indispensable for the injection of local anesthetic in the interfascial space, the space between 2 muscle fasciae. Interfascial infiltration or block may be useful in treating myofascial pain in the trapezius muscle.
Methods: (1) In 5 cadavers, we studied the diffusion of a physiological saline and latex solution in the interfascial space of the upper muscles of the back, and performed a histological study of the fasciae.
Background: Injuries to the superior gluteal nerve are a common complication in hip replacement surgery. They can be avoided with a good anatomical knowledge of the course of the superior gluteal nerve.
Methods: We dissected 29 half pelvises of adult cadavers.