Joints Flashcards
What is a herniated discs
When the Nucleus Pulposus herniates(breaks through the Anulus Fibrosis
What is the Anulus fibrosis?
Tough outer layer of fibrocartilage. Surrounds the nucleus pulposus
An example sentence: The anulus fibrosis provides structural support to the intervertebral disc.
What is the Nucleus pulposus?
Gelatinous core that helps with shock absorption and reduces compressive loads
An example sentence: The nucleus pulposus acts as a cushion between vertebrae.
What is the Glenoid Labrum?
What’s the function?
Ligament that stabilizes shoulder joint and AC joint, and prevent humeral head moving Superiorly
Fibrocartilage that surrounds glenoid cavity, increases surface area around ball & socket joint, creates larger/ deeper ‘socket’ for humeral head to fit into
What ligaments stabilize the shoulder joint
3 ligaments:
Coraco-acromial ligament, Acromioclavicular ligament, Coracoclavicular ligament
What type of joint is the elbow joint?
Hinge Joint - Diarthroidal joint (free movement)
Elbow Joint: Hinge Joint - Diarthroidal joint (free movement)
What ligament binds the radius to the ulna and allows rotation?
Annular ligament
Ligaments that stabilize the elbow
- Annular ligament-Binds radius to ulna, Allows rotation
Which ligament stabilizes the lateral side of the elbow?
Radial collateral ligament
Ligaments that stabilize the elbow
- Radial collateral ligament-stabilize lateral side of elbow
Which ligament stabilizes the medial side of the elbow?
Ulnar collateral ligament
Ligaments that stabilize the elbow
- Annular ligament - Ulnar collateral ligament-stabilize medial side of elbow
What type of joint is the hip joint?
Ball + socket
Hip joint: Ball + socket
What ligament stabilize the hip joint
pubofemoral ligament
Ischiofemoral ligament
Iliofemoral ligament
What type of joint is the knee joint?
Modified hinge joint
Knee Joint: Modified hinge joint
How many articulations are in the knee joint?
3 Articulations
- medial condyle to medial condyle
- lateral condyle to lateral condyle
- Patella * femur
What ligament stabilizes the lateral side of the knee joint?
And is it intracapsillary or extracapsilary
LCL - Lateral Collateral ligament
(Fibular collateral ligament)
Extracapsullary
What ligament stabilizes the medial side of the knee joint?
MCL - Medial Collateral ligament
(Tibial Collateral ligament)
Extracapsullary
Which ligament limits anterior tibial movements?
ACL - Anterior Cruciate ligament: originates on anterior surface of tibia.
Intra capsular ligaments
Which ligament limits posterior tibial movements?
Is it inside or outside the synovial capsul?
PCL - Posterior Cruciate ligament: originates on posterior surface of tibia.
Intra capsular ligaments
What is the function of the Patellar ligament?
Extends from the patella to the anterior tibia
Located above patella
What is the Quadriceps tendon?
Tendon from the quadriceps muscle Attaches to the patella and continues to the tibia tuberosity / tibial tubercle
Runs below patella
Where is the Medial meniscus located?
On the medial side of the tibiofemoral joint
Where is the Lateral meniscus located?
On the lateral side of the tibiofemoral joint
What is the function of the Menisci
What are the 2 parts
Increase knee stability, Act as shock absorbers, spread load over cartilage
Medial meniscus
Lateral meniscus
