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Show the relationship between strength & mobility using examples.

Show how types of movement are related to specific structures.

Describe articulations between vertebrae.

Illustrate how hyperextensions, dislocations, & separations occur.

Class 8

Articulations-RepresentativeExamples

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Intervertebral symphyses

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Herniated &slipped disc

Weakened

post. long.ligament

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Shoulder

joint

dislocation

bursa

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QuickTime and aCinepak decompressor

are needed to see this picture.

Stabilization via tendons

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Elbow joint

1) interlocking

2) thick capsule

3) ligaments

Radial

c.l?

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Hip jointIliac crest

ischium

pubis

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Hip joint

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Kneejoint

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Knee joint

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Kneejoint

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QuickTime and aCinepak decompressor

are needed to see this picture.

Intra- & extracapsular

ligaments

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Knee joint

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Kneejoint

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Kneejoint

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Overall lessons:

Vertebral discs consist of tough cartilage husk around cushion of

elastic cartilage.

Ligaments and bone processes limit rotation and flexion.

Top vertebral joint has no disc.

Humerus is held mostly by tendons.

Clavicle can be separated from scapula.

Ulna can change angle, radius can also rotate.

Ulnar process prevents hyperextension.

Hip held together w/ tighter ligaments (less free than shoulder).

Knee held together w/ seven ligaments (lateral, medial, anter.).

Knee can lock into straight position w/ tight ligaments (save E).