Scapula, Clavicle, Promixal Humerus Flashcards
What classification of bone is the clavicle
Long bone
The medial end is also known as the
Sternal aspect
The lateral end is also known as the
Acromial extremity
Which end articulates with the part of the scapula
Lateral
Which end articulated with the manubrium
Medial
At what level is the clavicle (with reference to the ribs)?
First rib
Which classification of joint are sternoclavicular (sc) joints and acromioclavicular (ac) joints
Synovial
Which type of joint are SC and AC joints
Gliding
SC joint (double-gliding)
Which gender of adults (males or females) has more sharply curved clavicles
Males
Spine (crest of spine)
Large protrusion on dorsal surface
Acromion (mainly posterior)
Lateral extension of scapular spine
Terminal and lateral end of spine
Always superior & posterior to coracoid
Medial border (seen both a and p)
Runs from superior angle to inferior angle
Glenoid cavity (seen both posterior and anterior)
Large fossa on the lateral angle
Scapular notch (seen both anterior and posterior)
Deep depression on superior border
Middle of the superior border
Costal surface
Anterior aspect of the scapula
Inferior angle (seen both posterior and anterior)
The junction of the medial and superior borders
Superior angle (seen both posterior and anterior)
The junction of the medial and lateral borders
Lateral border (seen both anterior and posterior)
Extends from the glenoid cavity to the inferior angle
Superior border
Extends from the superior angle to the coracoid process
Coracoid process (can be seen anterior and posterior)
Slender, finger like projection extending anteriorly and laterally from near the lateral angle
Inferior & anterior to acromin
Subscapular fossa (anterior)
Inferior surface
Large depression on the anterior surface
Supraspinous fossa (posterior)
Area above the scapular spine on dorsal surface
Posterior Infraspinous fossa
Large, board area below the spine on dorsal surface
Proximal Head (humerus)
Large, rounded eminence that articulates with the glenoid cavity
Supermedial aspect
Scapula: land marks
Following landmarks can be seen either anterior or posterior surface
All angles/borders
Scapular notch
Acromin
Glenoid cavity
Coracoid process can only be seen on the anterior surface
Surgical neck
(Most fractured)
Site of most humeral fractures
Constriction of the shaft inferior to tubercles
Anatomic neck
Superior to surgical neck
Located where head joins the shaft
Narrow construction superior to tubercles
Lesser tubercle
Boney process on the anterior surface of the shaft, inferior from the anatomic neck
Best seen when arm is internally rotated
Greater tubercle
Lateral aspect
Inferior to anatomic neck
Larger and more superior than lesser
Best seen when hands are supinated
Bony process
Intertubercular groove
Aka bicipital
Deep depression that separates the two tubercle
What bone classification is the scapula
Flat
How many surfaces, borders, and angles does a scapula have
Surface: 2
Borders: 3
Angles: 3
Which surface of the scapula is the costal surface
Anterior
Name the two fossae located on the posterior surface of the scapula
Supraspinous/infraspinous
What structure separates the two fossae on the posterior surface of the scapula
Crest of the spine
What is the name of the lateral end of the scapular spine
Acromin
Where is the scapular north located
Lateral end of the superior border
What is the most anterior bony projection of the scapula
Coracoid process
What bone forms the anterior part of the scapula
Clavicle
Small, synovial fluid-filed sacs that relieve pressure and reduce friction in tissue are called
Bursae
