Lecture 13 2/21/24

Question 1

What are the characteristics of the ergot?

Answer 1

-tuft of hair on palmar/plantar side of fetlock (metacarpo-phalangeal joint)
-vestigial metacarpal/metatarsal pad

Question 2

What are the characteristics of the ligaments of the ergot?

Answer 2

-extend obliquely to attach to hoof cartilages
-collagenous connective tissue
-used as a marker during nerve blocks

Question 3

What are the characteristics of the chestnut?

Answer 3

-horny excrescence
-vestiges of carpal and tarsal pads
-medial and proximal on carpus
-medial and distal on tarsus

Question 4

What are the characteristics of the interosseous muscle?

Answer 4

-entirely tendinous
-attaches to proximal sesamoid bones
-part of passive stay apparatus

Question 5

What are the insertions of the interosseous ligament?

Answer 5

-cruciate sesamoidean ligament
-oblique sesamoidean ligament
-straight sesamoidean ligament
-intersesamoidean ligament
-extensor branches

Question 6

Which insertion of the interosseous lig. crosses two joints?

Answer 6

straight sesamoidean lig.

Question 7

What are the synovial structures of the equine distal limb?

Answer 7

-digital sheaths
-dorsal and palmar/plantar pouches
-navicular bursa

Question 8

What are the characteristics of dorsal and palmar/plantar pouches?

Answer 8

-extensions of joint capsules
-allow for injections from the side

Question 9

Where is the navicular bursa located?

Answer 9

between the distal sesamoid bone and DDF

Question 10

Where is the distal sesamoid bone located?

Answer 10

palmar/plantar surface of distal interphalangeal joint

Question 11

Where do the ligaments of the distal sesamoid bone run to?

Answer 11

proximal: to P1
distal: to P3

Question 12

Which annular ligaments are present in the equine?

Answer 12

-palmar annular lig.
-proximal digital annular lig.
-distal digital annular lig.

Question 13

What does the proximal digital annular lig. look like?

Answer 13

giant X along the palmar/plantar surface