The point of connection between two bones or elements of a skeleton
Joint in which two bones are bound only by ligaments
A peg-in-socket fibrous joint (ex: articulation of a tooth with its bony alveolar socket)
A bar of hyaline cartilage that unites bones
Freely movable joint containing a cavity filled with synovial fluid
Joint-lubricating fluid secreted by the synovial membrane
A fibrous sac between certain tendons and bones that is lined with a synovial membrane that secretes synovial fluid
A painful swelling of the bursa of the first joint of the big toe
Elongated bursa that wraps completely around a tendon subjected to friction
Start of muscle attachment on a (proximal) part of a stationary bone
End of a muscle attachment on the (distal) part of a movable bone
A painful injury to a joint caused by a sudden wrenching of its ligaments
Performing a surgical procedure while using an arthroscope to view the internal structure, such as a joint. Minimally invasive.
Dislocation or displacement of bone from the joint
Partial displacement of a joint or organ
Inflammation of a bursa
Inflammation of a tendon
Inflammation of a joint
Chronic breakdown of cartilage in the joints. Inflammation of bones and joints.
Chronic inflammatory autoimmune disease, affecting joint cartilage and synovial membranes
Inflammation of joints caused by excessive uric acid in the blood and uric acid crystals deposited in joints (common in big toe)
A form of rheumatoid arthritis (mostly seen in males) that primarily causes inflammation of the joints between the vertebrae causing immobility of spine
The ratio of the force exerted by a machine to the force applied to it
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.
Fulcrum in the middle; see-saw, hammer, scissors
Fulcrum at the end, load in the middle; wheel barrow, car-jack
Fulcrum at the end, effort in the middle; tweezers, baseball bat
Please allow access to your computer’s microphone to use Voice Recording.
We can’t access your microphone!
Click the icon above to update your browser permissions above and try again
Reload the page to try again!
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Your microphone is muted
For help fixing this issue, see this FAQ.