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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...
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...
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...
Muscles that Move the Thigh01:20

Muscles that Move the Thigh

The thigh's motion is primarily governed by muscles originating in the pelvic girdle and inserted into the femur. One crucial muscle, the iliopsoas, is a combination of the psoas major and the iliacus muscles, sharing a common insertion point on the lesser trochanter of the femur.
Three other significant muscles are the gluteus maximus, gluteus medius, and gluteus minimus. The gluteus maximus originates from the posterior surface of the ilium, sacrum, and coccyx, and the thoracolumbar fascia...
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: May 8, 2026

Evaluation of Stem Cell Therapies in a Bilateral Patellar Tendon Injury Model in Rats
09:31

Evaluation of Stem Cell Therapies in a Bilateral Patellar Tendon Injury Model in Rats

Published on: March 30, 2018

Quadriceps and patellar tendon ruptures.

Dennis Lee1, Daniel Stinner, Hassan Mir

  • 1Division of Orthopedic Trauma, Department of Orthopedics and Rehabilitation, Vanderbilt University Medical Center, Nashville, Tennessee.

The Journal of Knee Surgery
|August 20, 2013
PubMed
Summary
This summary is machine-generated.

Diagnosing quadriceps and patellar tendon ruptures involves clinical suspicion and imaging. Acute repair offers excellent outcomes, while chronic cases require reconstruction and careful rehabilitation.

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Harvesting of Peroneus Longus Tendon Autograft
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Harvesting of Peroneus Longus Tendon Autograft

Published on: September 2, 2025

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Evaluation of Stem Cell Therapies in a Bilateral Patellar Tendon Injury Model in Rats
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Published on: March 30, 2018

Harvesting of Peroneus Longus Tendon Autograft
04:03

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Published on: September 2, 2025

Area of Science:

  • Orthopedic Surgery
  • Sports Medicine
  • Musculoskeletal Imaging

Background:

  • Quadriceps and patellar tendon ruptures necessitate high clinical suspicion.
  • Medical comorbidities can predispose individuals to tendon degeneration.
  • Diagnosis relies on history, physical examination, and imaging when needed.

Purpose of the Study:

  • To outline diagnostic strategies for quadriceps and patellar tendon ruptures.
  • To describe surgical repair and reconstruction techniques.
  • To detail post-operative rehabilitation protocols and potential complications.

Main Methods:

  • Clinical evaluation including thorough history and physical examination.
  • Radiographic assessment using plain films, ultrasound, and MRI for equivocal cases.
  • Surgical repair techniques: transpatellar bone tunnels for acute ruptures, reconstructions for chronic tears or post-arthroplasty cases.

Main Results:

  • Acute repair with transpatellar bone tunnels is the preferred method for acute ruptures.
  • Reconstruction with allograft, synthetic mesh, or autograft is indicated for chronic tears and post-total knee arthroplasty disruptions.
  • Rehabilitation protocols involve early weight-bearing, limited arc motion, and progressive strengthening.

Conclusions:

  • Early diagnosis and acute surgical repair lead to excellent outcomes for quadriceps and patellar tendon ruptures.
  • Delayed repair is associated with poorer outcomes.
  • Effective rehabilitation is crucial for managing these injuries and minimizing complications like stiffness and rerupture.