KNEE JOINT

 

Joint animation

DESCRIPTION: The articular surfaces of this joint are femoral condyles and the tibial condyles. The joint is the largest in the body and it is provided with intra-articular structures such as lateral and medial menisci, and the anterior and posterior cruciate ligaments, all designed to stabilize incongruous articular surfaces.

LIGAMENTS:

NERVE SUPPLY:

 

 BLOOD SUPPLY: Anastomoses around the knee joint involving the following arteries.


Anastomoses around knee joint; Roll over mouse to label; click to anastomose and restore

Genicular branches of popliteal artery-

You also have the following

 MOVEMENTS: It is  hinge joint- hence allows only extension and flexion with minimal rotation.

          Flexion: By biceps femoris, semitendinosus, semimembranosus, and assisted by sartorius, gracilis and popliteus. Plantaris and gastrocnemius can perform  flexion when foot is off the ground.

         Extension: By quadriceps femoris mainly but with minimal assistance from tensor fasciae latae.

          Rotation: In conjunct rotation, rotation occurs with simultaneous flexion or extension of the knee. In adjunct rotation, rotation occurs without these movements but are demonstrated in the semiflexed knee.
         Medial rotation during flexion: Popliteus, semitendinosus, semimembranosus, sartorius and gracilis.
         Lateral rotation during flexion is carried out by only biceps femoris.            

KNEE JOINT INTERIOR roll over mouse to label

Dissector of knee joint

Dissector of popliteal fossa and interior of knee joint

Injuries to knee

Gallery

Extension

Flexion

Skin

Interior

Interior

Interior

Bones

 

 

 

 

 

 
Knee joint replacement

 


Dissector of popliteal fossa and back of knee


Locator of knee joint.
DIGITAL LOCATOR OF KNEE JOINT: Layer 1 Skin of knee joint  Layer 2- Layer of superficial fascia  Layer 3 Layer of deep fascia  Layer 4 - layer of capsule of knee joint. Layer  5 - layer of synovial cavityLayer 6- Interior of joint. Layer 7- layer of bones
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Roll over mouse to display knee joint interior

 

 

 

 

 

 

 

 

 

 

Introduction
Histology
Embryology
Gross anatomy
Organ integration
Knee joint
Quiz

Physiology

Biochemistry

Chemical Pathology

Anatomical Pathology

Rupture of medial collateral ligament
Rupture of medial collateral ligament and anterior cruciate ligaments
Rupture of lateral collateral ligament
Rupture of lateral collateral land posterior cruciate ligaments
Injury to medial meniscus
Injury to lateral meniscus
Penetrating injuries of knee

Dislocation of knee

 

 

Electronic School of Medicine
Creator: Oluwole Ogunranti