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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...
Sites for measuring blood pressure01:21

Sites for measuring blood pressure

Blood pressure measurement is a fundamental clinical procedure, providing crucial data for assessing cardiovascular health. Among the various sites for this measurement, the brachial and popliteal arteries are predominantly utilized due to their accessibility and the reliability of their readings. This lesson delves into the anatomical significance, methodology, and considerations of measuring blood pressure at these locations.
The Brachial Artery: Primary Site for Blood Pressure Measurement
Veins of Lower Limbs01:15

Veins of Lower Limbs

The human body consists of an intricate network of veins responsible for the crucial task of blood drainage from the lower limbs. These veins can be categorized into two main types: deep veins and superficial veins.
Formed by the union of the medial and lateral plantar veins, the posterior tibial vein, rising through the calf muscle, assimilates the fibular vein. The anterior tibial vein, a superior extension of the foot's dorsalis pedis vein, merges with the posterior tibial vein at the knee,...
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 of the Leg that Move the Foot and Toes01:28

Muscles of the Leg that Move the Foot and Toes

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.
Anterior Compartment
The anterior compartment includes muscles that contribute to the dorsiflexion of the foot. This compartment houses the tibialis anterior, extensor hallucis longus, and extensor digitorum longus muscles.

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Related Experiment Video

Updated: Jun 23, 2026

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach
05:44

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach

Published on: October 20, 2023

Non-popliteal synovial rupture.

Michelle Sit1, Jay B Higgs

  • 1San Antonio Uniformed Services Health Education Consortium, Rheumatology Service, Brooke Army Medical Center, Fort Sam Houston, San Antonio, TX, USA.

Journal of Clinical Rheumatology : Practical Reports on Rheumatic & Musculoskeletal Diseases
|April 25, 2009
PubMed
Summary
This summary is machine-generated.

Ruptured non-popliteal synovial cysts are uncommon and can mimic other conditions, presenting a diagnostic challenge. Early recognition and high suspicion are crucial for accurate diagnosis and management of these rare joint cyst ruptures.

Related Experiment Videos

Last Updated: Jun 23, 2026

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach
05:44

Arthroscopic Excision of Posterior Cruciate Ligament Cysts Using a Double Posteromedial Approach

Published on: October 20, 2023

Area of Science:

  • Orthopedics
  • Radiology
  • Rheumatology

Background:

  • Popliteal synovial cysts, often linked to knee arthritis, are well-documented.
  • Non-popliteal synovial ruptures are less recognized and pose diagnostic challenges.

Observation:

  • An 81-year-old woman presented with chest wall pain and bruising.
  • Ultrasound revealed a dissecting parasynovial cyst in the shoulder.
  • The patient later experienced contralateral recurrence of the cyst.

Findings:

  • A literature review identified non-popliteal synovial ruptures in various joints including the shoulder, elbow, wrist, spine, hip, knee, and ankle.
  • Symptoms like swelling, inflammation, bruising, and nerve impingement can mimic other conditions.
  • Contralateral recurrence is an unusual complication.

Implications:

  • Increased awareness of non-popliteal synovial ruptures is needed for accurate diagnosis.
  • A high index of suspicion can prevent diagnostic confusion.
  • Management options are limited, primarily involving conservative measures or rare surgical intervention.