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Structural Classification of Joints
focuses on the material binding the bones together and whether or not a joint cavity is present. There are fibrous, cartilaginous, and synovial joints
synarthrotic joints connect bone to bone with dense fibrous connective tissue. There are sutures, gomphoses, and sydesmoses
fibrous joints consisting of pegs, sockets they fit into and the ligaments that hold them; is an amphiarthrosis
structural classification; fibrous joint; bones connected by ligaments; synarthrotic (tibia/fibula) to amphiarthrotic (ulna/radius)
the most movable joints of the body; diarthrotic each contains a fluid-filled joint cavity
Distinguishing Factors of Synovial Joints
articular cartilage, joint (synovial) cavity, and articular (joint) capsule
external fibrous capsule (dense irregular connective tissue) and internal synovial membrane (loose connective tissue)
Distinguishing Features of Synovial Joints
three types of reinforcement ligaments; capsular, extracapsular, intracapsular
flattened fibrous sacs lined with synovial membranes, common where ligaments, muscles, skin, and tendons rub together
Stabilizing Factors in Synovial Joints
shapes of articular surface, ligament number and location, and muscle tone
Shape of Articular Surface
plays a minor role in mobility but play major role in stabilizing synovial joints
Ligament Number and Location
plays a limited role in synovial joint stabilization, but the more ligaments there are, the stronger the joint
Once you stretch a ligament, it stays stretched. After stretched more than 6% of its original length, ligaments snap
plays a major role in stabilizing synovial joints and keeping tendons that cross the joint taut. Especially key in the knee, shoulder, and arches of foot)
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