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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...
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...

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Related Experiment Video

Updated: Jun 3, 2026

Anterior Cruciate Ligament Transection and Synovial Fluid Lavage in a Rodent Model to Study Joint Inflammation and Posttraumatic Osteoarthritis
06:28

Anterior Cruciate Ligament Transection and Synovial Fluid Lavage in a Rodent Model to Study Joint Inflammation and Posttraumatic Osteoarthritis

Published on: September 2, 2025

[Patella dislocation].

S Oestern1, D Varoga, S Lippross

  • 1Klinik für Unfallchirurgie, Universitätsklinikum Schleswig-Holstein, Campus Kiel, Arnold-Heller-Straße 3, 24105, Kiel. Stefanie_oestern@hotmail.com

Der Unfallchirurg
|April 6, 2011
PubMed
Summary
This summary is machine-generated.

Patella dislocation involves the kneecap moving out of place, often laterally. Treatment decisions for patella dislocations depend on associated injuries.

Related Experiment Videos

Last Updated: Jun 3, 2026

Anterior Cruciate Ligament Transection and Synovial Fluid Lavage in a Rodent Model to Study Joint Inflammation and Posttraumatic Osteoarthritis
06:28

Anterior Cruciate Ligament Transection and Synovial Fluid Lavage in a Rodent Model to Study Joint Inflammation and Posttraumatic Osteoarthritis

Published on: September 2, 2025

Area of Science:

  • Orthopedics and Sports Medicine
  • Biomechanics
  • Radiology

Context:

  • Patella dislocation, the displacement of the kneecap from the femoral groove, is a common knee joint injury.
  • Dislocations are typically lateral and can be congenital, habitual, or traumatic, with recurrent and chronic forms also recognized.
  • Etiology is multifactorial, including genu valgum, patella dysplasia, and patella alta.

Purpose:

  • To define patella dislocation and its classifications.
  • To outline the common causes and diagnostic methods for patella dislocation.
  • To differentiate treatment approaches based on injury severity and associated conditions.

Summary:

  • Patella dislocation occurs when the kneecap (patella) displaces from the femur, most often laterally.
  • Classifications include congenital, habitual, traumatic, recurrent, and chronic, with varied etiologies such as genu valgum and patella alta.
  • Diagnosis involves clinical examination, X-ray, and MRI, guiding decisions between conservative and surgical management based on concurrent injuries like fractures or ligament tears.

Impact:

  • Provides a comprehensive overview of patella dislocation, aiding clinicians in diagnosis and treatment planning.
  • Highlights the importance of considering associated injuries in managing patella dislocations.
  • Contributes to understanding the diverse causes and classifications of this knee injury.