Hindlimb Bones Horse Flashcards
4 Divisions of the Horse’s hindlimb
- Hip
- Thigh (stifle joint)
- Leg/Gaskin/Shin (hock joint)
- Pes
Hip is termed as os coxae or _____
aitchbone
- largest flat bone of the body
- 3 parts
ilium
ischium
pubis
Hip
What are the 3 major parts of a horse’s hipbone?
- tuber sacrale
- tuber coxae
- tuber ischium
Highest point of hindlimb. Measures the croup. Found in dorsal and median. os sacrum is the nearest bone articulated here.
Tuber sacrale
Project lateral for muscle attachment. (balakang in humans)
tuber coxae
Part of the buttocks of a horse. found caudally.
tuber ischium
An articulated depression where 3 parts (Ilium, Ischium, pubis) produce a joint investiture. Head of femur articulates here.
Acetabulum cotyloid cavity
os coxae of both sides
pelvic girdle
Makes up the pelvic cavity. Also called bony pelvis. (3)
includes:
pelvic girdle
sacrum
coccygeals/caudal vertebra 1 & 2
the bony pelvis is described as having: (5)
a root
a floor
lateral walls
an entrance
an exit
In horse, wings of the ilium has a ____ while dogs don’t. it serves as attachment for gluteal muscles in horse.
gluteal line
Mare hipbone characteristics (3)
walls of the pubis is thin
pubic floor is concave
pelvic outlet is large
Stallion hipbone characteristics (3)
pubis is thick medially
pubic floor is convex
pelvic outlet is small
Longest bone in the thighs. also has ____ shelf.
3rd trochanter is present
femur
patellar shelf
2 trochlea of the femur. which is bigger?
lateral and medial trochlear ridge.
medial one is bigger
Also called shin or legbone or gaskin
tibia and fibula
This articular structure of fibula is fused with tibia.
lateral malleolus
TRUE or FALSE
fibula is reduced to a head and shaft only
true
large sesamoid bone which develops at the tendon of the quadriceps femoris muscle. It articulates with the trochlea of the femur. Describe its shape
Patella
Triangular in shape
What do you call the 2 surfaces of patella. which surface is associated with patellar shelf.
Anterior (convex)
Articular (associated with patellar shelf)
Parts of the patella. (4)
2 surfaces: anterior and articular
two borders: medial and lateral
Base – proximal
Apex – distal
What makes up the Pes (3)
Tarsus
Metatarsus
Digits (Phalanges)
How many tarsal bones does a horse have? what are they?
6
Talus (tibial tarsal), calcaneus (fibular tarsal), Central tarsal, 1st/2nd tarsal bone, 3rd tarsal bone, 4th tarsal bone
this part of the tarsus has very large trochlea found in dorsal surface.
talus
___ and ____ tarsal bone is found lateral to the hock.
3rd and 4th
keratinized tissue surrounding the coffin bone
hoof
Hoof is formed by what 4 bones
o Distal part of the 2nd phalanx
o 3rd phalanx
o navicular bone
o lateral cartilages