Joints

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28 terms · Joint Vocabulary Words

Joint

The point of connection between two bones or elements of a skeleton

Sutures

Immovable joints

Syndesmoses

Joint in which two bones are bound only by ligaments

Gomphoses

A peg-in-socket fibrous joint (ex: articulation of a tooth with its bony alveolar socket)

Synchrondroses

A bar of hyaline cartilage that unites bones

Synovial Joint

Freely movable joint containing a cavity filled with synovial fluid

Synovial Fluid

Joint-lubricating fluid secreted by the synovial membrane

Bursa

A fibrous sac between certain tendons and bones that is lined with a synovial membrane that secretes synovial fluid

Bunion

A painful swelling of the bursa of the first joint of the big toe

Tendon Sheath

Elongated bursa that wraps completely around a tendon subjected to friction

Origin

Start of muscle attachment on a (proximal) part of a stationary bone

Insertion

End of a muscle attachment on the (distal) part of a movable bone

Sprain

A painful injury to a joint caused by a sudden wrenching of its ligaments

Arthroscopic Surgery

Performing a surgical procedure while using an arthroscope to view the internal structure, such as a joint. Minimally invasive.

Luxation

Dislocation or displacement of bone from the joint

Subluxation

Partial displacement of a joint or organ

Bursitis

Inflammation of a bursa

Tendonitis

Inflammation of a tendon

Arthritis

Inflammation of a joint

Osteoarthritis

Chronic breakdown of cartilage in the joints. Inflammation of bones and joints.

Rheumatoid Arthritis

Chronic inflammatory autoimmune disease, affecting joint cartilage and synovial membranes

Gouty Arthritis

Inflammation of joints caused by excessive uric acid in the blood and uric acid crystals deposited in joints (common in big toe)

Ankylosing Spondylitis

A form of rheumatoid arthritis (mostly seen in males) that primarily causes inflammation of the joints between the vertebrae causing immobility of spine

Mechanical Advantage

The ratio of the force exerted by a machine to the force applied to it

Mechanical Disadvantage

Condition that occurs when the load is far from the fulcrum and the effort is applied near the fulcrum; the effort applied must be greater than the load to be moved.

1st-Class Lever

Fulcrum in the middle; see-saw, hammer, scissors

2nd-Class Lever

Fulcrum at the end, load in the middle; wheel barrow, car-jack

3rd-Class Lever

Fulcrum at the end, effort in the middle; tweezers, baseball bat

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