Publications by authors named "Juan-Carlos Ortiz-Sagrista"
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
- 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.
The 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 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.