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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...
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...
Functional Classification of Joints01:09

Functional Classification of Joints

Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses  or amphiarthroses, whereas all synovial joints are classified as diarthroses.
Synarthrosis
An immobile...

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Related Experiment Video

Updated: Jul 13, 2026

Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography
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Measuring 3D In-vivo Shoulder Kinematics using Biplanar Videoradiography

Published on: March 12, 2021

The relationship between hip joint space width, center edge angle and acetabular depth.

G A Daysal1, B Goker, E Gonen

  • 1Gazi University, School of Medicine, Department of Internal Medicine, Ankara, Turkey.

Osteoarthritis and Cartilage
|July 17, 2007
PubMed
Summary

Radiographic measurements for hip dysplasia, like the center edge (CE) angle, are linked to body size, not just joint health. This suggests height and limb length can influence these measurements, potentially mimicking abnormalities.

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In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
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Last Updated: Jul 13, 2026

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In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
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In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy

Published on: July 2, 2021

Area of Science:

  • Orthopedics
  • Radiology
  • Anthropology

Background:

  • Acetabular dysplasia diagnosis relies on radiographic parameters.
  • These parameters may be influenced by anthropological factors unrelated to dysplasia.
  • Understanding these influences is crucial for accurate diagnosis.

Purpose of the Study:

  • To investigate the relationship between minimal joint space width (JSW) and radiographic parameters of acetabular dysplasia in healthy individuals.
  • To determine if anthropological characteristics affect hip dysplasia measurements.

Main Methods:

  • Evaluated 118 patients without hip issues undergoing abdominal radiography.
  • Manually measured minimal joint space width (JSW), center edge (CE) angle, and acetabular depth.
  • Correlated these measurements with pelvic width, height, and leg length.

Main Results:

  • The CE angle inversely correlated with minimal hip JSW.
  • CE angle also correlated with pelvic width.
  • Acetabular depth correlated with subject height and leg length, while pelvic width correlated with JSW.

Conclusions:

  • Radiographic parameters for acetabular dysplasia (CE angle, acetabular depth) are associated with anthropological variables.
  • CE angle is linked to minimal hip JSW.
  • Patient height and limb length can affect these parameters, potentially leading to misinterpretation as abnormalities.