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Related Concept Videos

Knee Joint01:23

Knee Joint

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.
A total of seven ligaments support the knee joint. The patellar ligament, which is also attached to the quadriceps femoris group...
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...
Structural Joints: Synovial Joints01:16

Structural Joints: Synovial Joints

Synovial joints are the most common type of joint in the body. A key structural characteristic for a synovial joint is the presence of a joint cavity. This fluid-filled space is where the articulating surfaces of the bones contact each other. Also, unlike fibrous or cartilaginous joints, the articulating bone surfaces at a synovial joint are not directly connected to each other with fibrous connective tissue or cartilage. This gives the bones of a synovial joint the ability to move smoothly...
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...
Bones of the Lower Limb: Tibia and Fibula01:10

Bones of the Lower Limb: Tibia and Fibula

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...
Joints01:26

Joints

Joints, also called articulations or articular surfaces, are points at which ligaments or other tissues connect adjacent bones. Joints permit movement and stability, and can be classified based on their structure or function.
Structural joint classifications are based on the material that makes up the joint as well as whether or not the joint contains a space between the bones. Joints are structurally classified as fibrous, cartilaginous, or synovial.
Fibrous Joints Are Immovable
The bones of a...

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Related Experiment Video

Updated: May 22, 2026

Tissue Collection and RNA Extraction from the Human Osteoarthritic Knee Joint
06:06

Tissue Collection and RNA Extraction from the Human Osteoarthritic Knee Joint

Published on: July 22, 2021

Bursae around the knee joints.

Priyank S Chatra1

  • 1Department of Radiology, Yenepoya Medical College, Mangalore, Karnataka, India.

The Indian Journal of Radiology & Imaging
|May 25, 2012
PubMed
Summary
This summary is machine-generated.

Bursae are fluid-filled sacs that reduce friction around the knee. This pictorial essay details common knee bursa lesions and their appearance on MRI scans.

Keywords:
Iliotibial bursainfrapatellar bursapes anserine bursa

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Area of Science:

  • Orthopedic imaging
  • Radiology
  • Anatomy

Background:

  • Bursae are essential fluid-filled structures minimizing friction between musculoskeletal tissues.
  • Knee bursae are anatomically categorized into peri-patellar and other locations.
  • Understanding bursal abnormalities is crucial for diagnosing knee pain.

Purpose of the Study:

  • To present a pictorial overview of common knee bursa lesions.
  • To illustrate the characteristic magnetic resonance imaging (MRI) findings for these lesions.
  • To aid radiologists and clinicians in identifying and diagnosing bursal abnormalities in the knee.

Main Methods:

  • Review of common knee bursa pathologies.
  • Correlation of pathologies with MRI findings.
  • Pictorial presentation of representative cases.

Main Results:

  • Detailed description of the MRI appearance of frequently encountered knee bursal lesions.
  • Categorization of lesions based on location (peri-patellar and elsewhere).
  • Visual examples demonstrating the spectrum of bursal abnormalities.

Conclusions:

  • MRI is a key modality for evaluating knee bursal lesions.
  • Familiarity with the MRI appearance of common bursal pathologies improves diagnostic accuracy.
  • This essay serves as a visual reference for knee bursitis and related conditions.