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Knee Joint01:23

Knee Joint

3.6K
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...
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Bones of the Lower Limb: Femur and Patella01:16

Bones of the Lower Limb: Femur and Patella

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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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Muscles that Move the Leg01:23

Muscles that Move the Leg

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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...
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Disorders of the Skeletal Muscle01:28

Disorders of the Skeletal Muscle

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The clinical conditions affecting the skeletal muscle tissue are broadly categorized as musculoskeletal and neuromuscular disorders.
Musculoskeletal disorders
Musculoskeletal disorders involve injuries and conditions affecting the skeletal muscles and associated connective tissues. These disorders can arise from acute biomechanical stresses or chronic overuse and can occur across different age groups. Common injuries include sprains, fractures, and muscular strains, often resulting from...
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Related Experiment Video

Updated: Mar 18, 2026

Tissue Collection and RNA Extraction from the Human Osteoarthritic Knee Joint
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Problems With Large Joints: Knee Conditions.

Andrew St Porter1

  • 1University of Kansas School of Medicine Family and Community Medicine, 1010 N. Kansas, Wichita, KS 672147, andrew.porter@viachristi.org.

FP Essentials
|July 13, 2016
PubMed
Summary
This summary is machine-generated.

Knee injuries, both acute and overuse, are common and can affect ligaments, tendons, and cartilage. Family physicians can diagnose and manage most knee conditions with proper history, physical exam, and imaging, often improving with conservative treatments.

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Area of Science:

  • Orthopedics
  • Sports Medicine
  • Primary Care

Background:

  • The knee joint relies on ligaments, muscles, and tendons, making it prone to various injuries.
  • Acute knee injuries affect ligaments, menisci, and weight-bearing surfaces.
  • Overuse injuries commonly impact the patellar tendon, iliotibial band, and patellofemoral complex.

Purpose of the Study:

  • To outline the diagnosis and management of common acute and overuse knee injuries.
  • To emphasize the role of family physicians in managing knee conditions.
  • To detail diagnostic tools and conservative treatment strategies for knee injuries.

Main Methods:

  • Comprehensive patient history and physical examination.
  • Diagnostic imaging, including X-rays, MRI, CT scans, and ultrasonography.
  • Assessment of conservative management options like bracing, activity modification, weight loss, and physical therapy.

Main Results:

  • Most acute and overuse knee injuries can be diagnosed and managed effectively by family physicians.
  • A thorough history and physical exam are crucial for accurate diagnosis.
  • Conservative treatments, including physical therapy and activity modification, are often successful.

Conclusions:

  • Family physicians play a key role in the initial diagnosis and management of knee injuries.
  • Appropriate diagnostic workup and conservative treatments can lead to favorable outcomes for most knee injuries.
  • Referral to orthopedic subspecialists is reserved for cases unresponsive to initial management.