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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 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...
Appendicitis-I: Introduction01:22

Appendicitis-I: Introduction

The appendix, a small, narrow, blind tube extending from the inferior part of the cecum, is widely regarded as a vestigial organ, having lost much of its original function through evolution. Despite its diminished role, the appendix can become inflamed, a condition known as appendicitis.
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
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.
Bones of the Lower Limb: Femur and Patella01:16

Bones of the Lower Limb: Femur and Patella

The femur is the body's longest and strongest bone spanning the thigh region. Its head articulates with the acetabulum of the hip bone to form the hip joint. A minor indentation on the medial side of the femoral head, called the fovea capitis, serves as the site of attachment for the ligament of the head of the femur. This weak ligament spans the femur and acetabulum and supports the hip joint. The narrowed region below the head is the neck of the femur. The inclination angle between the neck...
Irritable Bowel Syndrome01:23

Irritable Bowel Syndrome

DefinitionIrritable bowel syndrome (IBS) is a functional gastrointestinal disorder characterized by recurrent combinations of abdominal pain, bloating, diarrhea, or constipation.Pathophysiology of irritable bowel syndromeIts pathophysiology is multifactorial, involving disturbances in motility, sensory processing, microbial balance, barrier integrity, and gut–brain communication. These mechanisms interact to produce symptoms that vary across IBS subtypes.Altered Motility PatternsDisordered...

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Related Experiment Video

Updated: Jul 16, 2026

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
19:53

Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer

Published on: March 1, 2015

Piriformis muscle syndrome.

Elzbieta Kuncewicz1, Ewa Gajewska, Magdalena Sobieska

  • 1Klinika Fizjoterapii, Reumatologii i Rehabilitacji, Akademii Medycznej im. Karola Marcinkowskiego ul. 28 Czerwca 1956 roku 135/147, 61-545 Poznań.

Annales Academiae Medicae Stetinensis
|March 28, 2007
PubMed
Summary

Sciatica involves radiating pain due to spinal issues or piriformis syndrome. Accurate diagnosis of the underlying cause is crucial for effective sciatica treatment.

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Diagnosis of Musculus Gastrocnemius Tightness - Key Factors for the Clinical Examination
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Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer
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Single-stage Dynamic Reanimation of the Smile in Irreversible Facial Paralysis by Free Functional Muscle Transfer

Published on: March 1, 2015

Diagnosis of Musculus Gastrocnemius Tightness - Key Factors for the Clinical Examination
08:43

Diagnosis of Musculus Gastrocnemius Tightness - Key Factors for the Clinical Examination

Published on: July 7, 2016

Area of Science:

  • Neurology
  • Orthopedics
  • Pain Management

Background:

  • Sciatica presents as radiating pain from the lower back to the legs.
  • Common causes include spinal degenerative changes and intervertebral disc lesions.
  • Piriformis syndrome, often post-traumatic, can also cause sciatica.

Purpose of the Study:

  • To outline the diverse causes of sciatica.
  • To differentiate between primary and secondary sciatica.
  • To emphasize the importance of etiological investigation for treatment.

Main Methods:

  • Literature review of sciatica causes.
  • Analysis of clinical presentations.
  • Differential diagnosis of sciatic pain.

Main Results:

  • Sciatica stems from spinal issues (degeneration, disc lesions) or sciatic nerve entrapment.
  • Secondary causes include vertebral metastases, spinal tuberculosis, tumors, and piriformis syndrome.
  • Piriformis syndrome can result from trauma, infection, or fibrosis.

Conclusions:

  • Sciatica has multifactorial origins, ranging from spinal pathology to peripheral nerve entrapment.
  • Thorough investigation is essential to identify the specific cause of sciatica.
  • Targeted treatment depends on accurate etiological diagnosis.