Bones of the Upper Limb.pptx 2014
Transcript of Bones of the Upper Limb.pptx 2014
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SKELETON
Skeleton system consist of several types of tissue
Cartilage( connective tissue semi rigid)
Bones (rigid type of connective tissue)
The Skelton (Bones) provides
Protection
Locomotion
Storage of (Minerals)
Synthesis of blood (from bone marrow)
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Classification of Bones
BONES MAY BE CLASSIFIED ACCORDING TOREGION. Appendicular and Axial )SHAPE. Long ,Short ,Irregular, Flat and Sesamoid)DEVELOPMENTAL Cartilaginous and Membranous)STRUCTURAL Spongy and Compact)
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AXIAL SKELETONSKULL
Cranium 8
Face 14
Auditory ossicles 6
28
Hyoid 1
Vertebrae (including sacrum and coccyx)
Cervical 7 ,thorax 12 and lumbar 5 26
Sternum 1
Ribs 24
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Classification According to shape.
Long . eg, Clavicle Humerus Radius Ulna.
Femur Tibia Fibula.
Short. eg, Hand and Foot bones.
Irregular. eg, Vertebrae , Hip bones .
Flat . eg, Scapula Sternum Skull.
Sesamoid. eg, Patella and Pisiform.
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EACH LONG BONES HAS
Epiphysis
Diaphyis.
Metaphysis.
Epiphysial plat. Is a Cartilage present in
between the diaphysis Epiphysis .Bone
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Epiphysis.
Metaphysis
Diaphysis
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COMMON FEATURES OF THE BONES
Condyles: Rounded Knuckle Like Area
Crest: Thick border
Epicondyle: eminence superior to condyle
Facet:
a smooth flat area usually covered withcartilage where bone articulates with another bone.
Grove: elongated depression
Head:
a large rounded end makes the articulation Tubercle: a small rounded elevation
Tuberosity: a large rounded elevation
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THE CLAVICLEIs the long bone lying in
horizontally connects theupper limb with the axial
Skelton
Main features of the clavicle
Two ends medial & lateral
Two curvatures medial &lateral
Two surfaces inferior &Superior
Two borders. Anterior andposterior.
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Clavicle
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SCAPULA Flat triangular bone
Following are the important features
Three Borders:lateral , medial and superior.Three Angles: Superior inferior and lateral.
Spine: Triangular in shape at the posterior surface of
scapula.Acromion processprojects above the glevoid cavity from
the lateral side of spine.
Glenoid cavity. Pear shaped at lateral angle.Three Fossae supraspinous , infraspinous & subscapular.
Two notches supra-scapular & spino-glenoind.
Two Surfaces. Anterior(costal) and posterior.
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SCAPULA
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HUMERUS
Is the long bone of arm
Following are main features Head:
Tubercle:Lesser and
greater tubercle.
Bicipital grove:Betweentwo tubercles.
Trochlea: Pulley shaped on
lateral side of lower end .
Capitulam:On Medial side
lower end
Epicondyle:lateral and
medial.
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ULNA Medial side bone of the
fore arm
Following are theimportant Features.
Head (on lower side.)
Medial Styloid process
Trochlear notch Olecranon process
Ulnar notch
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CARPAL BONE (Eight bones)
Arranged in two rows
Proximal and Distal. Scaphoid .
Lunate.
Triquetral.
Pisiform.
Trepezium.
Trepizoid.
Capitate.
Hamate.
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METACARPAL
Five in numbers
present in the palm
of the hand.
First number starts
from lateral side.
PHALANGES
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PHALANGES.
Total fourteen
Two in the thumb Three in each of the
remaining fingers.