Lecture 1: Osteology & Arthrology of the Thoracic Limb (Exam 1) Flashcards
Label A through K
- A: Shoulder
- B: Shoulder point
- C: Upper arm
- D: Elbow
- E: Knee
- F: Cannon bone & Splint bones
- G: Toe
- H: Heels
- I: Pastern
- J: Fetlock
- K: Forearm
Label the following Picture
What is a landmark on the scapula that can be palpated in Equine
Scapular Tuber
What are the differences found on the lateral side of an equine scapula and a canine scapula
- Scapular Cartilage
- There is no acromion
- Glenoid Notch
Label the following picture
What muscle attachs to the Facies Serrata in Equine
Facies Serrata m.
What is the difference between the Facies Serrate in Equine compared to a canine
There is two facies serrate in equine but one in dogs
Label the following:
What are the difference in the Cranial View of an equine humerus compared to a canine humerus
- There is a double intertubercular groove
- Have an intermediate tubercle
- No foramen
Label the following:
T/F: the olecranon fossa is very deep in equine
True
Label the following
Which bone in equine is the only bone that reaches the carpus
The radius
What are some differences found on the lateral view of an equine radius & ulna compared to a canine radius & unla
- the radius & ulna are fused
- There is a interosseous space
- The styloid process are BOTH found on the radius
Label the following:
Label the following:
How many digits are found in equine (what # are they)
- 1
- Digit #3
T/F: Digit #1 & #5 carpal bones will never be found in the distal row of carpal bones in equine
F; they can sometimes be there
What carpal bone is the biggest in the distal row of carpal bones in equine
3
What is a major difference found in the Equine carpus compared to canines
The radial carpal bone and the ulnar carpal bone are not fused together like in dogs
Label the following:
What is the purpose of the accessory carpal bone
To join the radius & ulnar carpal bone
Label the following
What digit is the singular weight-bearing digit
Digit #3
What kind of the apex does the distal phalanx in equine have
A broad round apex
What is a main difference in the distal phalanx in equine compared to canine
The distal phalanx in equine is flat
Label the following:
What are some differences found in the palmar side of an equine thoracic digit compared to a canine
- The medial proximal sesamoid is bigger & more triangular shaped
- There is a proximal phalangeal trigone (an attachment site for multiple ligaments)
- There is a medial & lateral solar foramen with a canal connecting the two
Label the following:
what does spheroid mean when discussing joints
That the joint can do all ranges of movement
Describe the humeral joint in equine
- Is a Simple spheroid joint but acts like a hinge joint
- Is involved in flexion and extension movements
- Has glenohumeral ligaments that act as a thick capsule on the medial & lateral side
- Has a thick biceps brachii origin tendon & a bursa
What is circled in pink?
The biceps brachii origin tendon
There is a ____ capsule surrounding the entire carpal area
Full
What type of joint is the antebrachiocarpia (radiocarpal) joint
Hinge
What type of of joint is the intercarpeae (intercarpal) joint
Plane
What type of joint is the mediocarpea (midcarpal) joint
Hinge
What type of joint is the carpometacarpeae (carpometacarpal) joint
Plane
Describe the carpal joints in equine
- They are similar to other species
- The radiocarpal joint is surrounding the radius & proximal carpal row
- The sinovial capsule of the radiocarpal joint is independent
- The sinovial capsule of the inter & Mediocarpea is a shared capsule
- Consist of the lateral colateral & medial colateral ligaments
What does anti degree does the radiocarpal allow
90 degrees
What carpal joint has the most range of movement & how many degrees of motion (midcarpal joint)
- The mediocarpea found between the proximal & distal carpal bones
- Allows for ~45 degrees for mostly deflection
What is the red line
Radiocarpal joint
Describe the capsule joint between the proximal carpal bones & the metacarpal joint (carpometacarpal joint)
- The bones just slide
- There is not much range of motion
What is the blue for
- The top = Mediocarpea (midcarpal) joint
- The bottom = Carpometacarpeae (carpometacarpal) joint
What is circled in pink
The intercarpal joint
Can the joint capsules be palpated
yes
What joint is this
Midcarpal joint
Describe the metacarpophalangeal joint (fetlock)
- Compound hinge
- Great range of motion
- Has small dorsal recess and a large palmar recess
Describe the proximal interphalangeal joint
A saddle joint
Describe the distal interphalangeal joint (coffin)
- Saddle joint
What digit joints are colateral ligaments found in
All of them
What are dorsal & palmar recesses
Sac of the metocarpophalangeal joint
What motions do the digit joints perform
Flexion & extension
What are A through C:
- A = Metacarpophalangeal joint
- B = Proximal interphalangeal joint
- C = Distal interphalangeal joint
What are the boundaries of the palmar recess
- Dorsal = Metacarpal bone 3
- Palmar = Interosseous ligament
- Distal = Proximal sesamoid bones
Label the *
The palmar recess
Label A and B
- A = Dorsal recess
- B = Palmar recess
Label the following
- A = Metacarpal bone
- B = Sesamoid bone
- C = Proximal phalange