Joint

Supraspinatus

Supraspinatus

origin: superspinous fossa

insertion: greater tubercle of humerus

action: 2, lateral rotation and abduction

Infraspinatus

origin: infraspinous fossa

insertion: greater tubercle of humerus

action: lateral rotation of the arm

Teres minor

origin: lateral border of scapula

insertion: greater tubercle of humerus

action: lateral rotation of the arm

Subscapularis

origin: subscapular fossa

insertion: lesser tubercle of humerus

action: medial rotation of the arm and adduction

Quadriceps Tendon

A band of tissue that connects the quadriceps muscle to the patella, aiding in knee extension.

Patellar Ligament

A ligament that connects the patella to the tibia, providing stability to the knee joint.

Medial meniscus

A C-shaped cartilage in the knee that provides cushioning and stability between the femur and tibia. (teal part)

Lateral meniscus

A C-shaped cartilage in the knee that provides cushioning and stability between the femur and tibia on the outer side. (teal part on knee)

Medial collateral ligament

Lateral collateral ligament

Anterior cruciate ligament

Posterior cruciate ligament

Meniscus

Where are meniscus or articular disks found?

-femur/tibia

-mandible/temporal

-clavicle/sternum

Functional types (3)

synarthrosis, diarthorsis, amphiarthrosis

Structural types (3)

fibrous, cartilaginous, synovial

functional type synarthrosis

is a type of joint that allows little to no movement, providing stability and support. Examples include sutures in the skull.

functional type diarthrosis

is a type of joint that allows for free movement in various directions, often providing a wide range of motion. Examples include the shoulder and knee joints.

functional type amphiarthrosis

is a type of joint that allows for limited movement, providing a balance between stability and mobility. Examples include the joints between the vertebrae.

structural type fibrous

joints connected by dense connective tissue, allowing little to no movement. Examples include syndesmoses and gomphoses.

structural type synovial

joints characterized by a fluid-filled joint cavity, allowing for a wide range of motion. Examples include the hip and elbow joints.

structural type cartilaginous

joints connected by cartilage, allowing for some movement. Examples include synchondroses and symphyses.