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Related Concept Videos

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...
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 Upper Limb: Humerus01:19

Bones of the Upper Limb: Humerus

The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
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...
Ankle Joint01:10

Ankle Joint

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...
Structural Joints: Cartilaginous Joints01:17

Structural Joints: Cartilaginous Joints

As the name indicates, at a cartilaginous joint, the adjacent bones are united by cartilage, a tough but flexible type of connective tissue. Unlike synovial joints, these types of joints lack a joint cavity and involve bones joined together by either hyaline cartilage or fibrocartilage.
There are two types of cartilaginous joints:
Synchondrosis
A synchondrosis ("joined by cartilage") is a cartilaginous joint where bones are connected by hyaline cartilage. Synchondrosis may be temporary or...

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Updated: May 16, 2026

A Probing Device for Quantitatively Measuring the Mechanical Properties of Soft Tissues during Arthroscopy
06:16

A Probing Device for Quantitatively Measuring the Mechanical Properties of Soft Tissues during Arthroscopy

Published on: May 1, 2020

Acetabular labrum.

Donna G Blankenbaker1, Michael J Tuite

  • 1Department of Radiology, University of Wisconsin School of Medicine and Public Health, Madison, WI 53792-3252, USA. dblankenbaker@uwhealth.org

Magnetic Resonance Imaging Clinics of North America
|November 22, 2012
PubMed
Summary
This summary is machine-generated.

Acetabular labral tears cause hip pain and can be diagnosed using high-resolution hip MR imaging. Accurate assessment involves evaluating labral morphology and contrast extension to avoid misinterpretation.

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Area of Science:

  • Orthopedics
  • Radiology
  • Medical Imaging

Background:

  • Acetabular labral tears are a common mechanical cause of hip pain.
  • Accurate diagnosis is crucial for effective treatment planning.

Purpose of the Study:

  • To outline optimal Magnetic Resonance (MR) imaging techniques for evaluating acetabular labral tears.
  • To describe key imaging findings for diagnosing labral abnormalities.

Main Methods:

  • Utilizing 1.5-T or 3-T MR magnets with small field-of-view and high-resolution imaging protocols.
  • Performing MR arthrography to assess labral morphology and contrast extension.

Main Results:

  • Specific criteria for assessing labral tear abnormalities include labral morphology and contrast extension.
  • Detailed description of tear extent is valuable for surgical planning.

Conclusions:

  • High-resolution hip MR imaging is recommended for diagnosing acetabular labral tears.
  • Understanding imaging pitfalls is essential to prevent misinterpretation of labral tears.