AC Joint , Clavicle , Scapula

• What is the classification of the clavicle ?

  long bone
• What makes up the clavicle ?

  Acromial articular end - lateral

  Body

  Sternal Articular end - medial
• where does the clavicle lie ?

  above the first rib in a horizontal oblique
• What does the clavicle form ?

  forms anterior part of shoulder girdle
• More curved in males than females
• What is the scapula classified as ?

  flat bone
• Two surfaces - costal and dorsal
• Tree borders - superior , medial , and lateral
• Three angles - superior , inferior , and lateral
• What fossa is in the costal surface ( Anterior ) ?

  subscapular
• prominent spinous process that divides dorsal surface into two portion s ; ends as acromion

  crest of spine
• flattened , ovoid projection

  acromion
• origin to supraspinatus muscle ; area above crest of spine

  supraspinous fossa
• origin of infraspinatus muscle ; portion below crest of spine

  infraspinous fossa
• extends from superior angle to coracoid process

  superior border
• deep depression on lateral end of superior border

  scapular notch
• extends from superior to inferior angles

  medial border
• extends from glenoid cavity to inferior angle

  lateral border
• formed by junction of superior and medial borders

  superior angle
• formed junction of medial and lateral borders; over rib 7

  inferior angle
• ends in glenoid cavity ; thickest

  lateral angle
• Coracoid process can be palpated distal and slightly medial to AC joint
• The glenohumeral joint is located between the glenoid cavity and the head of the humerus
• what is the type of joint is the scapulohumeral articulation considered ?

  synovial ball - and - socket joint
• The scapulohumeral articulation is also known as _______.

  glenohumeral joint
• Where is the IR located for an AP ACROMIOCLAVICULAR JOINT ( PEARSON METHOD ) ?

  midpoint at same level as AC jionts
• What is the breathing instruction for a AP ACROMIOCLAVICULAR JOINT ( PEARSON METHOD ) ?

  Suspend
• What is the position of part for an AP ACROMIOCLAVICULAR JOINT ( PEARSON METHOD ) ?

  Center midline of body to midline of grid

  Body weight equally distributed

  Two exposures ; one with 5-10 lb . weights, one without

  Slowly affix weights onto wrists
• What is the central ray for a APACROMIOCLAVICULAR JOINT ( PEARSON METHOD )

  perpendicular to midline of body at level of AC joint
• What is the evaluation criteria for an AP ACROMIOCLAVICULAR JOINT ?

  Both AC joints, with and without weights

  No rotation or leaning by the patient

  AC joints separation , if present
• Where is the IR located during a AP CLAVICLE ?

  centered to clavicle
• What is the POSITION OF PART for a AP CLAVICLE ?

  center clavicle to midline or table or grid device

  Arms placed along sides of body

  Shoulder in same horizontal plane
• What is the BREATHING instruction for AP CLAVICLE ?

  Suspend at end of exhalation
• Where is the CENTRAL RAY located during a AP CLAVICLE ?

  perpendicular to midshaft of clavicle
• What is the EVALUATION CRITERIA for a AP CLAVICLE ?

  Entire clavicle centered on image

  Lateral half of clavicle above scapula , with medial half superimposing thorax
• Where is the IR centered during an AP AXIAL CLAVICLE

  centered to clavicle
• What is the POSITION OF PART during a AP AXIAL CLAVICLE ?

  Arms placed along sides of body

  Shoulders in same horizontal plane
• What are the BREATHING INSTRUCTIONS during a AP AXIAL CLAVICLE

  suspend at end of full inspiration
• What is the CENTRAL RAY for a AP AXIAL CLAVICLE

  0-30 degree cephalic angle range ; enters midshaft of clavicle
• If in a LORDOTIC position during an AP AXIAL CLAVICLE

  0-15 cephalic