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Related Concept Videos

Muscles that Move the Thigh01:20

Muscles that Move the Thigh

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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...
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The movement of the legs is facilitated by numerous muscles located within the anterior, medial, and posterior compartments of the thigh.
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Muscles of the Leg that Move the Foot and Toes01:28

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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.
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Veins of Lower Limbs01:15

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The human body consists of an intricate network of veins responsible for the crucial task of blood drainage from the lower limbs. These veins can be categorized into two main types: deep veins and superficial veins.
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Assessing Blood pressure in the Leg01:11

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Proper measurement of leg blood pressure is a critical skill for healthcare providers, ensuring precise and reliable readings. When performed correctly, this procedure informs patient care and enhances the efficacy of interventions. The following text outlines step-by-step guidelines to measure blood pressure in the leg, providing clarity and ease of understanding for practitioners.
Preparation:
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Arteries of Lower Limbs01:20

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The external iliac artery transitions out of the body cavity, entering the femoral region of the lower leg, and is renamed the femoral artery at the point where it traverses the body wall. This artery is responsible for the distribution of blood to the thigh's deep muscles and the skin's ventral and lateral regions, achieved through several minor branches and the lateral deep femoral artery, which also spawns a lateral circumflex artery. The knee area receives blood from the genicular...
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Updated: Jun 16, 2025

Quantifying Arms and Legs Contributions during Repetitive Electrically-Assisted Sit-To-Stand Exercise in Paraplegics: A Pilot Study
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Thigh muscle pump function during ambulation.

Roman A Tauraginskii1, Fedor Lurie2, Anna Borde3

  • 1Research Laboratory of Venous Hemodynamics, Phlebocenter LLC, Kaliningrad, Russia.

Journal of Vascular Surgery. Venous and Lymphatic Disorders
|April 10, 2025
PubMed
Summary
This summary is machine-generated.

During walking, blood in superficial leg veins flows towards deep intramuscular veins, not anterograde. The thigh muscle pump diverts this flow, challenging previous assumptions about venous blood circulation.

Keywords:
AmbulationAmbulatory venous pressureChronic venous insufficiencyHuman locomotionMuscle pumpMuscle pump failure

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Area of Science:

  • Vascular Physiology
  • Human Locomotion
  • Biomechanical Engineering

Background:

  • Superficial venous blood flow in lower extremities is typically considered anterograde.
  • Recent findings suggest altered flow patterns during locomotion.
  • The role of the thigh muscle pump in directing venous outflow requires clarification.

Purpose of the Study:

  • To investigate the pressure gradient in the thigh venous network during ambulation.
  • To determine the direction of blood flow in superficial thigh veins during walking.

Main Methods:

  • Venous pressure was measured in the great saphenous vein (GSV) and intermuscular veins of the thigh.
  • Measurements were taken during treadmill walking at varying speeds.
  • Common femoral artery blood flow was assessed using duplex ultrasound.

Main Results:

  • A pressure gradient directed from superficial to intermuscular veins was observed during most of the stride cycle.
  • This gradient was significantly larger than between knee and groin GSV segments.
  • GSV pressure remained consistent at knee and groin levels regardless of walking frequency.

Conclusions:

  • During ambulation, blood flow in superficial thigh veins is directed towards intramuscular veins.
  • The thigh muscle pump acts as a flow diverter, redirecting blood via perforating veins.
  • This challenges the concept of purely anterograde flow and redefines the physiological role of perforating veins.