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Related Concept Videos

Knee Joint01:23

Knee Joint

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The knee joint is the most complicated joint in the body. It consists of three articulations– two tibiofemoral and one patellofemoral. As is characteristic of synovial joints, the knee joint has a thin articular capsule that partially surrounds this joint cavity. Additionally, several ligaments, muscles, and cartilaginous structures support the movement of the knee.
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Cranial and Spinal Meninges01:19

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The cranial and spinal meninges are complex protective structures surrounding the central nervous system (CNS), consisting of the brain and spinal cord. These meninges consist of the dura mater, the arachnoid mater, and the pia mater. They protect the CNS, provide structural support, and aid in circulating cerebrospinal fluid (CSF).
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Extracellular Matrix01:26

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Unlike epithelial tissue, which is composed of cells closely packed with little or no extracellular space in between, connective tissue cells are dispersed in a matrix. This extracellular matrix (ECM) is composed of fibrous proteins like collagen, elastin, and fibronectin in a ground substance consisting of interstitial fluid, cell adhesion proteins, and proteoglycans. The proteoglycans form a gel-like material in the spaces between cells and provide hydration, buffering, binding, and force...
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The Extracellular Matrix01:42

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The Extracellular Matrix01:29

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In order to maintain tissue organization, many animal cells are surrounded by structural molecules that make up the extracellular matrix (ECM). Together, the molecules in the ECM maintain the structural integrity of tissue as well as the remarkable specific properties of certain tissues.
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Renal Corpuscle01:20

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The glomerulus and Bowman's capsule are two essential components of the nephron, which is the functional unit of the kidney. These microscopic structures play a critical role in the process of blood filtration to produce urine.
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Destabilization of the Medial Meniscus and Cartilage Scratch Murine Model of Accelerated Osteoarthritis
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The Perimensical Capsule: Potential Supporting Structure Surrounding Meniscus.

Xiang Yun Yin1,2, Jun Young Chung1, Do Young Park1,2

  • 1Department of Orthopedic Surgery, Ajou University School of Medicine, Suwon, Korea.

Cartilage
|December 8, 2019
PubMed
Summary
This summary is machine-generated.

The knee

Keywords:
capsulehoop tensionkneemeniscusperimeniscal capsule

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Area of Science:

  • Orthopedic Surgery
  • Biomechanical Engineering
  • Human Anatomy

Background:

  • The perimeniscal capsule's role in knee joint stability is not fully understood.
  • Understanding its structure-function relationship is crucial for knee biomechanics.

Purpose of the Study:

  • To analyze the morphological and biomechanical properties of the perimeniscal capsule.
  • To establish the functional significance of its anatomical variations in the knee joint.

Main Methods:

  • Human cadaver knees (n=10) were utilized.
  • Medial meniscus and surrounding capsules were harvested and analyzed using scanning electron microscopy.
  • Tensile modulus of superior and peripheral perimeniscal capsules was biomechanically assessed.

Main Results:

  • Peripheral perimeniscal capsules were thicker with circumferential fibers; superior capsules were thinner with vertical fibers.
  • Peripheral capsules exhibited significantly higher tensile modulus than superior capsules.
  • Distinct morphological and biomechanical properties were observed based on anatomical location.

Conclusions:

  • The perimeniscal capsule's fiber orientation and thickness vary with anatomical location.
  • These variations likely contribute to maintaining meniscal hoop tension, particularly the peripheral capsule's role.
  • The findings highlight the importance of the perimeniscal capsule's regional characteristics in knee joint function.