Lecture 3: Small Animal Shoulder and Brachium Flashcards
Identify 1-5
- Acromion
- Spine
- Cranial border
- Supraspinous fossa
- Scapular notch
identify 1-6
- Cranial border
- Coracoid process
- Supraglenoid tubercle
- Acromion
- Infraglenoid tubercle
- Glenoid cavity
What are the most palpable structures on scapula
Acromion and spine
where does the humerus articulate with the scapula
Glenoid cavity
identify 1-11
- Lesser tubercle
- Intertubuercular groove
- Greater tubercle
- Head
- Head
- Lesser tubercle
- Medial epicondyle
- Lateral epicondyle
- Capitulum
- Supratochlear foramen
- Trochlea
How can you determine which structure is medial vs lateral epicondyle
On a cranial view the lateral epicondyle is above the capitulum whereas the medial epicondyle is above the trochlea
On the caudal view you can’t see capitulum and trochela but medial will be on right side and lateral on left side
How do you tell the difference between the capitulum and trochlea of humerus
Trochlea hangs lower on the medial side over ulna
What is endochondral ossification
Cartilage hardens/calcifies to form bone
What are osteochondrosis lesions
Failure of immature cartilage to form bone.
Leads to abnormal cartilage thickening, death, fissures, and flaps in the cartilage
Osteochondrosis lesions are most common in
Young, rapidly growing large breed dogs
What is osteochondrosis dissecans
Inflammatory condition when disease cartilage separates from the bone and there is failure of the cartilage and bone interface
What is wrong
Osteochondrosis lesions
What is wrong here
Osteochondrosis dissecans
which X-ray is abnormal and what is the problem
Left: Normal
Right: abnormal- osteochondrosis dissecans
which X-ray is normal and which is abnormal and what is the problem
Left: normal
Right: abnormal- osteochondritis dissecans
Rotator cuff injuries is a result of what
OCD flap
Shoulder arthroscopy: what is indicated by the red and green arrows
Red: OCD flap
Green: inflammation
Explain why once you remove OCD flap in shoulder why you would want to cause additional irritation and bleeding
Promote healing- blood will bring healing factors
What are the stabilizing muscles of the shoulder
Medial: subscapularis and coroacobrachialis
Lateral: supraspinatus, infrapsinatus, teres minor
Besides the muscles of the shoulder what other structures stabilize the shoulder
Joint capsule, biceps brachii tendon, medial and lateral glenohumeral ligaments
Identify 1-3 and is this a medial or lateral view
- Subscapularis
- Supraspinatus
- Coracobrachialis
Medial view
Identify 1-4 and is this a medial or lateral view and how do you know
- Teres minor
- Infraspinatus
- Supraspinatus
- Biceps brachii tendon
Lateral view: can tell because of spine
Identify 1-4 and is this a medial or lateral view
- Medial glenohumeral ligament
- Joint capsule
- Supraspinatus
- Biceps brachii tendon
Medial view: no spine
Identify 1 and 2 and which view is lateral vs medial
Left: lateral
Right: medial
1. Biceps tendon
2. Lateral and medial glenohumeral ligaments