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Related Concept Videos

Bones of the Lower Limb: Tibia and Fibula01:10

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The tibia is the main weight-bearing bone of the lower leg. It is larger than the fibula with which it is paired. The tibia is also the second longest bone in the body and is located right below the skin. The proximal end of the tibia forms the medial and the lateral condyle, which articulates with the condyles of the femur to form the knee joint. Between the articulating surfaces is the irregular elevated area known as the intercondylar eminence that serves as the inferior attachment point for...
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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...
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Ankle Joint

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The ankle is formed by the talocrural joint (crural = leg). It consists of the articulations between the talus bone of the foot and the distal ends of the tibia and fibula of the leg. The superior aspect of the talus bone is square-shaped and has three areas of articulation. The top of the talus articulates with the inferior tibia. This is the portion of the ankle joint that carries the body weight between the leg and foot. The sides of the talus are firmly held in position by the articulations...
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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.
Anterior Compartment
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The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule.
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The upper and lower limb initially develops as a small bulge called a limb bud, which appears on the lateral side of the early embryo. The upper limb bud appears near the end of the fourth week of development, with the lower limb bud appearing shortly after.
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Related Experiment Video

Updated: Dec 23, 2025

An Anatomical Study of Nerves at Risk During Minimally Invasive Hallux Valgus Surgery
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The fibular notch: an anatomical study.

Petr Fojtík1,2, Karel Kostlivý3, Jan Bartoníček1,2

  • 1Institute of Anatomy, 1st Faculty of Medicine, Charles University, Prague, Czech Republic.

Surgical and Radiologic Anatomy : SRA
|April 26, 2020
PubMed
Summary

The deepest point of the fibular notch (FN) is approximately 5mm above the tibial plafond, offering an ideal location for assessing distal fibula positioning. This finding resolves a long-standing issue in ankle fracture treatment.

Keywords:
Fibular notchIncisura fibularis tibiaeReduction of the distal fibula

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Area of Science:

  • Orthopedics
  • Anatomy
  • Biomechanics

Background:

  • Assessing distal fibula reduction into the fibular notch (FN) remains a clinical challenge.
  • Current methods lack standardization, often measuring the FN 1cm above the ankle joint without clear justification.
  • Previous research has not identified the deepest point of the FN, crucial for accurate assessment.

Purpose of the Study:

  • To determine the precise level at which the fibular notch (FN) is deepest.
  • To verify if this deepest point is approximately 4-5mm above the ankle joint space.
  • To establish an optimal reference point for evaluating distal fibula positioning in the FN.

Main Methods:

  • Utilized dry adult tibial bone specimens from a preserved anatomical collection.
  • Measured the height and width of the FN at various levels (3mm and 10mm above the tibial plafond).
  • Determined the depth of the FN at these levels and identified the distance from the deepest point to the tibial plafond's highest point.

Main Results:

  • The mean depth of the FN was 3.8mm at 3mm and 4.1mm at 10mm above the tibial plafond.
  • The maximum mean depth of the FN was found to be 4.5mm.
  • This deepest point was located approximately 5.3mm from the highest point of the tibial plafond.

Conclusions:

  • The deepest point of the fibular notch (FN) is located approximately 5mm superior to the tibial plafond.
  • A mean depth of 4.5mm at this level makes it the ideal region for assessing distal fibula reduction.
  • This anatomical landmark provides a more accurate and reliable reference for clinical evaluation.