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Arthrosyndesmology
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is science of anatomy and function of joints
Arthrosyndesmology is science of anatomy and function of joints
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Joints Solid non-synovial synarthroses Synovial cavitated diarthroses
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Transitional form of bone articulations – hemiarthrosis (symphysis)
It’s a cartilaginous joint having a cavity inside; gives a little mobility to pubic bones during parturition
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Solid joints immobile (for stability) Synovial joints mobile (for mobility)
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(on the example of shoulder joint)
Synovial joints (on the example of shoulder joint)
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Obligatory pats of synovial joints Articulating surface Articular (joint) capsule Articular cavity
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(on the example of shoulder joint)
Synovial joints (on the example of shoulder joint)
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covered by hyaline cartilage and participating in bone articulation
Articular surfaces are the parts of bones covered by hyaline cartilage and participating in bone articulation Congruent
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Articular capsule
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Synarthroses Fibrous joints (syndesmoses) 2.Cartilaginous joints
(synchondroses) 3.Osseus joints (synostoses)
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Syndesmoses Ligaments Membranes Sutures Fontanelles Gomphoses
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Ligaments
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Ligaments Do not regard to synovial joints Surround synovial joints
(extra-articular ligaments) 3. Located inside synovial joints (intra-articular ligaments)
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Ligaments Connect the bones holding them near each other
Form the openings that transmit vessels and nerves
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filling wide spaces between them
Membranes Connect bones filling wide spaces between them
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1. Interosseous membranes
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Membranes 2. Obturator membrane
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3. Atlantooccipital membranes
Tectorial membrane Posterior atlantooccipital membrane Anterior atlantooccipital membrane
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Connect the skull bones
Sutures Connect the skull bones Plan sutures Serrate sutures Squamous suture
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Fontanelles Connect the skull bones in newborns and children during first year of life
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Connect teeth to surrounding osseous tissue in jaw alveoli
Gomphosys Connect teeth to surrounding osseous tissue in jaw alveoli Dental root Periodontium Jaw bone
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Synchondroses Temporary Permanent
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Synchondroses Temporary
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Synchondroses 2. Permanent
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Synchondroses Hyaline Fibrous
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Synchondroses Hyaline
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Synchondroses 2. Fibrous
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Synostoses
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Synovial joints (diarthroses)
Classification based on the number of articulating surfaces Simple joints 3. Complex joints Compound Combined joints joints
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Simple joints
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Compound joints
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Complex joints
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Combined joints
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Synovial joints (diarthroses)
Classification based on the shape of articulating surfaces and number of axes of movements Uni-axial joints Bi-axial joints Multi-axial joints
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Types of movements Flexion-extension (around frontal axis)
2.Abduction-adduction (around sagittal axis) 3.Rotation (pronation-supination) (around vertical axis) 4. Circumduction
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Uni-axial joints Trochoid (pivot) joints Hinge joints
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Uni-axial joints Trochoid (pivot) joints
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Uni-axial joints Hinge joints
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Bi-axial joints Ellipsoidal joints Saddle joints Condyloid joints
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Bi-axial joints Ellipsoidal joints
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Bi-axial joints Condyloid joints
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Bi-axial joints Saddle joints
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Multi-axial joints Ball-and-socket joints 2. Plane joints
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Ball-and-socket joints
Multi-axial joints Ball-and-socket joints
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Multi-axial joints Plane joints
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Accessory structures in the synovial joints
1. Intra-articular ligaments 2. Intra-articular cartilages 3. Articular labrum 4. Synovial folds 5. Sesamoid bones 6. Synovial bursae
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Intra-articular ligaments
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Intra-articular cartilages
Menisci
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Intra-articular cartilages
Discs
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Articular labrum
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Synovial folds
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Sesamoid bones
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Synovial bursae
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Factors effecting the range of movements at synovial joints
Difference in square of articulating surfaces 2. Combination of joints 3. Thickness of articular capsule 4. Extra-articular ligaments 5. Muscles surrounding joint 6. Presence of accessory structures
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Plan of description of synovial joints
1.The names of articulating surfaces 2.The characteristic of the joint according to the Classifications of Synovial Joints: -based on the numbers of the articular surfaces (simple, compound, complex, combined): -based on the number of the axes of movements (uni-axial, bi-axial or multi-axial) and shape of articulating surfaces: 3.Accessory joint structures 4.The movements at the joint 5.The ligaments reinforcing the joint
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