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Related Concept Videos

Muscles that Move the Thigh01:20

Muscles that Move the Thigh

The thigh's motion is primarily governed by muscles originating in the pelvic girdle and inserted into the femur. One crucial muscle, the iliopsoas, is a combination of the psoas major and the iliacus muscles, sharing a common insertion point on the lesser trochanter of the femur.
Three other significant muscles are the gluteus maximus, gluteus medius, and gluteus minimus. The gluteus maximus originates from the posterior surface of the ilium, sacrum, and coccyx, and the thoracolumbar fascia...
Muscles of the Abdomen01:21

Muscles of the Abdomen

The abdominal wall encircles the abdominal cavity, providing flexible protection and shielding the internal organs from harm. It is bordered at the top by the xiphoid process and costal margins, at the back by the vertebral column, and at the bottom by the pelvic bones and inguinal ligament. The abdominal wall is divided into two regions — the anterolateral and posterior regions.
Anterolateral Region
The anterolateral region comprises five paired muscles classified into the lateral and anterior...
Muscles that Move the Leg01:23

Muscles that Move the Leg

The movement of the legs is facilitated by numerous muscles located within the anterior, medial, and posterior compartments of the thigh.
Anterior Compartment
The quadriceps femoris, the most visible muscle of the anterior compartment, is integral for leg extension and thigh flexion. It is formed by merging four distinct muscles — the vastus lateralis, vastus medialis, vastus intermedius, and rectus femoris. The quadriceps tendon, a shared tendon of the four quadriceps muscles, is affixed to...
Muscles of the Leg that Move the Foot and Toes01:28

Muscles of the Leg that Move the Foot and Toes

The human leg comprises an intricate system of muscles that facilitate the movement of feet and toes. Within this system, the muscles are categorized into the anterior, lateral, and posterior compartments, each with a unique set of muscles carrying out specific functions.
Anterior Compartment
The anterior compartment includes muscles that contribute to the dorsiflexion of the foot. This compartment houses the tibialis anterior, extensor hallucis longus, and extensor digitorum longus muscles.
Skeletal Muscle Anatomy00:55

Skeletal Muscle Anatomy

Skeletal muscle is the most abundant type of muscle in the body. Tendons are the connective tissue that attaches skeletal muscle to bones. Skeletal muscles pull on tendons, which in turn pull on bones to carry out voluntary movements.
Gross Anatomy of Skeletal Muscles01:12

Gross Anatomy of Skeletal Muscles

The connective tissues play a significant role in arranging the muscle fibers into a hierarchical structure that forms a complete muscle. Consider a muscle like the bicep brachii, commonly called the bicep. This muscle comprises thousands of muscle fibers enclosed by a protective layer of connective tissue called the endomysium. The endomysium is primarily composed of reticular fibers, a type of thin collagen fiber. It allows the exchange of nutrients and waste products at the fiber level,...

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Related Experiment Video

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Posterior Approach for Debridement of the Psoas Abscess
06:02

Posterior Approach for Debridement of the Psoas Abscess

Published on: March 2, 2020

Iliopsoas musculotendinous unit.

Donna G Blankenbaker1, Michael J Tuite

  • 1Department of Radiology, Division of Musculoskeletal Imaging, University of Wisconsin School of Medicine and Public Health, 600 Highland Avenue, Madison, WI 53792, USA. dg.blankenbaker@hosp.wisc.edu

Seminars in Musculoskeletal Radiology
|April 3, 2008
PubMed
Summary
This summary is machine-generated.

Iliopsoas diseases, including tendinosis and tears, are common causes of hip pain, especially in athletes and post-surgery patients. Imaging like MRI and ultrasound helps diagnose these often-overlooked conditions.

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Area of Science:

  • Musculoskeletal Imaging
  • Orthopedic Surgery
  • Sports Medicine

Background:

  • Hip pain is a prevalent condition with diverse causes, frequently necessitating imaging for diagnosis.
  • The iliopsoas musculotendinous unit is increasingly identified as a source of hip pain, linked to athletic activities and post-operative complications.
  • Iliopsoas-related pathologies, such as tendinosis, snapping tendon, bursitis, tears, and avulsion injuries, are often underdiagnosed.

Purpose of the Study:

  • To review the normal anatomy of the iliopsoas musculotendinous unit using magnetic resonance imaging (MRI) and sonography.
  • To describe the imaging characteristics of various iliopsoas diseases.
  • To explore the etiology of snapping hip and the utility of sonography in its evaluation and treatment.

Main Methods:

  • Review of normal iliopsoas musculotendinous unit anatomy via MRI and ultrasound.
  • Analysis of imaging findings in common iliopsoas pathologies.
  • Discussion of snapping hip causes and sonographic assessment.

Main Results:

  • Detailed description of normal iliopsoas anatomy on MRI and ultrasound.
  • Identification of characteristic imaging features for iliopsoas tendinosis, tears, bursitis, and avulsion injuries.
  • Sonography's role in diagnosing snapping iliopsoas tendon and guiding treatment is highlighted.

Conclusions:

  • Iliopsoas pathologies are significant contributors to hip pain across various populations.
  • Advanced imaging techniques, particularly sonography, are crucial for accurate diagnosis and management of iliopsoas-related hip pain.
  • Understanding iliopsoas anatomy and pathology on imaging is essential for clinicians.