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Ankle Joint01:10

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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...
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The human leg comprises an intricate system of muscles that facilitate the movement of feet and toes. Within this system, the muscles are categorized into the anterior, lateral, and posterior compartments, each with a unique set of muscles carrying out specific functions.
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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...
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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...
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Pulse assessment sites are crucial in evaluating a patient's cardiovascular health. By assessing the pulsations of arteries at specific anatomical locations, healthcare professionals can gather valuable information about blood flow, heart rate, and peripheral circulation. Understanding these pulse assessment sites is essential for conducting comprehensive cardiovascular evaluations and monitoring patients' overall health. These sites are strategically chosen due to the accessibility and...
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Knee Joint01:23

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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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Related Experiment Video

Updated: Jul 12, 2025

A Mouse Model of Ankle-Subtalar Complex Joint Instability
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Snapping ankles: peroneal tendon subluxation and dislocation.

Tom Hosack1,2, Oliver Perkins3,4, Sabri Bleibleh5

  • 1Department of Gastroenterology and Hepatology, John Radcliffe Hospital, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.

British Journal of Hospital Medicine (London, England : 2005)
|October 31, 2023
PubMed
Summary
This summary is machine-generated.

Peroneal tendon dislocation, an orthopaedic injury to the superior peroneal retinaculum, often results from specific foot movements. Surgical repair offers high success rates for this condition.

Keywords:
DislocationPeronealSubluxationTendon

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Area of Science:

  • Orthopaedics
  • Sports Medicine
  • Anatomy

Background:

  • Peroneal tendon dislocation/subluxation involves injury to the superior peroneal retinaculum.
  • Peroneal tendons are crucial for lateral leg function and stability.
  • Anatomical structures include the peroneal muscles, retromalleolar groove, and superior peroneal retinaculum.

Purpose of the Study:

  • To review the orthopaedic condition of peroneal tendon dislocation/subluxation.
  • To discuss classification systems, mechanisms of injury, and diagnostic imaging.
  • To summarize surgical management options and outcomes.

Main Methods:

  • Literature review of peroneal tendon injuries.
  • Discussion of anatomical basis and biomechanics.
  • Overview of diagnostic modalities (X-ray, ultrasound, MRI).
  • Summary of surgical techniques and outcomes.

Main Results:

  • Peroneal instability is classified using modified Eckert and Davies system.
  • Injury mechanism involves forced dorsiflexion and hindfoot eversion.
  • Various imaging techniques aid diagnosis and surgical planning.
  • Multiple surgical approaches demonstrate high success rates.

Conclusions:

  • Peroneal tendon injuries require accurate diagnosis via imaging.
  • Surgical management, including various techniques, yields favorable outcomes.
  • Understanding the anatomy and injury mechanism is key for effective treatment.