OSTEOLOGY YENI DHAMAYANTI
GENERAL OBJECTIVES :
The students understands about
structure and position of the bones
which formed the limbs and they
articulations
Specific Objectives :
The Students are know about :
Structure, location and content of bones of
the thoracic appendage
Structure, location and content of bones of
the pelvic limb
Articulation at the thoracic and pelvic limb
The Skeleton may be divided primarily into
three parts :
THE AXIAL SKELETON; comprises the vertebral
column, ribs, sternum and skull.
THE APPENDICULAR SKELETON; incudes the
bones of the limbs.
THE VISCERAL or SPLECHNIC SKELETON; consits
of certain bones developed in the substance of
some of the viscera or soft organs, e.g. os
penis of the dog and os cordis of the ox
OSSA APPENDICULARIS
BONES OF THE THORACIC LIMB
= OSSA MEMBRI THORACICI
(EXTREMITAS CRANIALIS)
BONES OF THE PELVIC LIMB =
OSSA MEMBRI PELVINA
(EXTREMITAS CAUDALIS)
The thoracic limb of animals are composed of four chief
segments :
THE THORACIC GIRDLE
REGIO CINGULUM MEMBRI THORACICI
OS. SCAPULA
OS. CORACOIDEUS
OS. CLAVICULA
The thoracic girdle attaches the forelimb to the body
and is incomplete in domestic mamals.
A complete pectoral girdle consists a scapula,
coracoids and clavicles
Climbing and burrowing mamals usually posess a
scapula and clavicle, coursing and grazing mamals
usually posess a scapula only.
All three pairs of bones of the thoracic girdle are
seen in birds and reptiles.
OS SCAPULA (facies lateralis)
SPINA SCAPULA
TUBER SPINA
THE HORSE
FOSSA SUPRASPINATA
FOSSA INFRASPINATA
COLLUM SCAPULA
DISTAL OS SCAPULA
TUBERCULUM SUPRAGLENOIDEUSPROCESSUS
CORACOIDEUS
INCISSURA GLENOIDALESCAVITAS
GLENOIDALES
EXTREMITAS PROXIMAL HUMERUS
(DORSAL VIEW)
CAPUT HUMERI
TUBERCULUM MAJOR
TUBERCULUM MINOR
TUBERCULUM INTERMEDIUS
Proximal Extremity Ruminant Lateral tuberosity is very large, and
rises abour 3 cm proximal to the level of the head, forming the point of the shoulder.
Its cranial part curves medially over the intertuberal groove, and distal to it laterally there is a prominent circular rough area for the insertion of the tendon of the infraspinatus muscle.
EXTREMITAS CAUDALIS OS HUMERUS
EPICONDYLUS MEDIALIS
EPICONDYLUS LATERALIS
CRISTA EPICONDYLOIDEA LATERALIS
P.T.O. EXTENSOR
OSSA CARPALES
The capus consists of a group of
six to eight bones, depending on
the species of animal.
The bones arranged in two rows,
proximal and distal.
OSSA CARPALES
HEWAN OC-R OC-IOC-U OC-A I II III IV
Kuda 7 – 8 + + + + +/0 + + +
Sapi/ domba 6 + + + + 0
- bersatu - +
Babi 8 + + + + + + + +
Anjing 7 - bersatu - + + + + + +
The accessory carpal bone is
situated to palmar to the ulnar
carpal bone and the lateral part of
the trochlea of the radius. It is
discoid and the medial surface is
form the lateral wall of the carpal
groove (canalis carpalis).
TUBEROSITAS TERES MAJOR
Middle of the medial surface of
the shaft is a small
roughened, which the
conjoined tendon of the
latissimus dorsi and teres
major muscles is atteched.
SULCUS BRACHIALIS
= SULCUS MUSCULOSPIRALIS
The lateral surface is smooth
and is spirally curved, which
contains the brachialis
muscles.
RUMINANSIA, KARNIVORA and
PIG is shallow.
TUBEROSITAS DELTOIDEUS
Cranial surface and lateral
surface are separated by a
distinct border, the crest of the
humerus, which bears proximal
to its middle the deltoid
tuberosity, to which the
deltoideus muscle inserts.
CAPUT HUMERI
The head presents an almost circular
convex articular surface, which is
about twice as extensive as the
glenoid cavity of the scapula, with
which it articulates and IT IS
POSITION AT THE CAUDAL
of the proximal extremity.
TUBERCULUM HUMERI
The greater tubercle = tuberculum major
(lateral tuberosity) is placed
craniolaterally
The lesser tubercle = tuberculum minor
(medial tuberosity) is placed
craniomedially
The intertuberal or bicipital groove is
bounded by the cranial parts of both
tubercles, and is subdivided by and
intermediate tubercle or ridge.
TUBERCULUM INTERMEDIUS
The third tubercle at median
Look clearly at horse, but we can see
clear at ruminantia, carnivora and pig
This tubercle divided from major et
minor by the groove, SULCUS BICIPITIS
or SULCUS INTERTUBELARIS
The groove, in fresh, lodges the tendon
of origin of the biceps brachii muscle.
SPINA SCAPULARIS Spine of the scapula divided the lateral
surface of scapula into two fossa
The acormion, a projecting mass of bone
located on the distal end of the spina of
the scapula, is not found in the horse but
is present in the cow and other animals.
The acromion of the cat is rounded and
called processus suprahammatus