Equine Distal Forelimb

Question 1

what are the joints of the distal forelimb

Answer 1

1. metacarpophalangeal joint
2. proximal interphalangeal joint
3. distal interphalangeal joint

Question 2

what is the most stressed, worked and damaged joint in the forelimb

Answer 2

fetlock joint

Question 3

what type of joint is the metacarpophalangeal joint

Answer 3

composite synovial

Question 4

what are the bones involved in the fetlock joint

Answer 4

1. metacarpal bone III
2. proximal phalanx
3. proximal sesamoid bone

Question 5

True or False:
there is no direct articulation with the proximal extremity of the proximal phalanx

Answer 5

true

Question 6

what is the purpose of the involvement of the proximal sesamoid bones in the fetlock

Answer 6

ligament attachment

Question 7

what is the purpose of the ligament attached to the proximal sesamoid bones involved in the fetlock

Answer 7

acts as a sling for support

Question 8

what are the sesamoidean ligaments

Answer 8

• interosseus muscles
• intersesamoidean ligament / palmar ligament
  -collateral sesamoidean ligaments
  -distal sesamoidean ligaments

Question 9

what are the sesamoidean ligaments

Answer 9

interosseous m.
intersesamoidean lig. / palmar lig.
collateral sesamoidean lig.
distal sesamoidean lig.

Question 10

how many distal sesamoidean ligaments are there

Answer 10

4

Question 11

what are the distal sesamoidean ligaments

Answer 11

1. straight (superficial) seasmoidean lig.
2. oblique (middle) sesamoidean lig.
3. cruciate (deep) sesamoidean lig.
4. short sesamoidean lig.

Question 12

what is the common name for the interosseous ligament

Answer 12

suspensory ligament

Question 13

what is characteristic of the suspensory ligament upon maturity in the horse

Answer 13

completely tendinous

Question 14

where does the interosseous (suspensory) ligament arise from

Answer 14

palmar carpal ligament and proximal part of palmar surface of MC3

Question 15

where does the interosseous muscle branch

Answer 15

above the fetlock

Question 16

what muscle travels between the splint bones of the horse

Answer 16

suspensory ligament

Question 17

where does the interosseous muscle insert

Answer 17

abaxial surface of the proximal sesamoid bone

Question 18

after the insertion on the proximal seasmoid bone, what happens to the suspensory ligament

Answer 18

detaches dorsal branches to P1 and join the common digital extensor tendon