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Knee Joint Presentation

Exercise Science Knee Presentation
by

S K

on 4 June 2010

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Transcript of Knee Joint Presentation

= sssasasd saaaa ssss Knee Joint Classification of Joint Hinge Joint Hinge joints allow a great deal of movement in a forward/backward direction (in one plane)
while not allowing for movement in other
directions/planes The knee joint is special because it allows for a small amount of rotational movement,
a characteristic not typically associated with hinge joints Muscles That Cross Joint Vastus Lateralis Vastus Medialis Vastus Intermedius Rectus Femoris Hamstrings Biceps Femoris Semimembranosus Semitendinosus Popliteus Gastrocnemius Synovial Joint but more specifically a... Quadriceps Ligaments Anterior Cruciate Ligament (ACL)
Posterior Cruciate Ligament (PCL)
Medial Collateral Ligament (MCL)
Lateral Collateral Ligament (LCL)
Posterior Meniscofemoral Ligament
Oblique Popliteal Ligament
Patellar Ligament Tendons Each of these tendons connects its
respective muscle to a location on
either the femur or the tibia. Quadriceps Tendon
Semimembranosus Tendon
Gastrocnemius Tendon (Medial and Lateral Heads)
Popliteal Tendon
Menisci
Articular disks that create space between the knee joint by spreading the femur and the tibia away from one another Act as shock absorbers for the knee Planes/Axes of Movement Knee flexion/extension occurs in the frontal plane about the horizontal axis Knee rotation (medial/lateral) occurs in the transverse plane about the longitudinal axis Muscles Involved in Movement Knee extension
Quadriceps (Rectus Femoris, Vastus Lateralis, Vastus Intermedius
Knee flexion
Hamstrings (Biceps Femoris, Semimembranosus, Semitendinosus), Gastrocnemius Medial/Internal Rotation
Semimembranosus, Semitendinosus, Popliteus Lateral/External Rotation
Biceps Femoris
Disorders The knee joint is the largest and the most complicated in the body because it support the entire body This makes it very susceptible to injury Ligament tears Occurs when ligaments that support the knee are overstretched or twisted, causing them to tear
ACL and PCL are the most commonly injured ligaments, especially in athletes
MCL and LCL can be injured if a blow occurs to either side of the knee
A hit on the lateral side of the joint will result in damage to the medial side and vice versa Osgood-Schlatter Syndrome Occurs when a growth plate at the tibial tuberosity ruptures and causes the tuberosity to undergo excess bone growth
This puts stress on the patellar tendon, which becomes inflamed and causes pain
Patellofemoral Syndrome (PFS) Occurs when the patellar tendon becomes inflamed and causes pain Torn meniscus Occurs when the knee is twisted and one/both of the meniscus are torn, causing pain and swelling Ruptured tendon The patellar/quadriceps tendon can tear after being over-contracted
Causes severe pain and prevents any movement in the knee
Overuse Overuse of the knee joint can lead to tendinitis or bursitis Rehabilitation Process There are many different methods of repairing joint damage that are designed to deal with injuries based on the extent of the damage to the joint Surgery Used to deal with fully torn ligaments/ruptured tendons Arthroscopy Minimally invasive procedure whereby a tube-like instrument is inserted into a joint to inspect, diagnose and repair it
Typically used to deal with minor tears
Physical Therapy Used to deal with minor tears by strengthening the joint and slowly reintroducing it to normal stresses more specifically a... by.... Joanne Tan, Stephanie Tan, Jessie Dhillon, Spencer Kaczor & Sukhpreet Klaire Klaire Knee injuries can occur in all sports but are most prevalent in:
Males: Football
Females: Basketball
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