Bones of Forelimb Flashcards
Horses stand on the _____.
3rd digit
Horses do not have _____.
Clavicles
90% of equine vet problems are due to _____.
Lameness
8 bones of the forelimb
- Scapula
- Humerus
- Radius
- Ulna
- Carpus
- Metacarpus
- Phalanges
- Sesamoids
5-8: Manus (hand)
What means “hole”?
Fossa
What means “underneath”?
Infra
What means “on top of”?
Supra
Rough area of the bone =
Tubercle
Radial fossa - where radius articulates with…
Humerus
Olecranon fossa articulates with…
Olecranon of ulna
Head of humerus articulates with _____.
The glenoid cavity of the scapula
Horses have a fused _____ and therefore cannot rotate their arms.
Radius and ulna
Ulna attaches more to _____ side.
Lateral side
The carpus is the “_____”.
Knee
The 2nd, 3rd, and 4th carpal bone sit on top of…
2nd, 3rd, and 4th metacarpal bones
The numbering of bones always goes from _____ to _____.
Medial to lateral
The accessory carpal bone is _____ located.
Laterally
Fetlock shape:
Change direction and Power of Muscles
_____ works as a key and lock that impedes lateral movement. Built-in stability.
Sagittal ridge
Sesamoid bones act like a _____.
Pulley
Pastern allows for…
Lateral movement; uneven ground/footing
Extensor process - place where attaches on…
2nd phalanx
The supraspinous fossa is smaller/same size/bigger than the infraspinous fossa.
The supra is smaller than infra
What two parts are the articular surface with carpal bones?
Lateral and medial styloid processes
_____ more cranial on the left scapula
Supraspinous fossa (on side of cranial border)
The cranial view of the left humerus tubercles go from left to right _____, _____, _____
Lesser, intermediate, greater tubercle
The caudal view of the left humerus has the greater tubercle on the _____ side.
Leftmost
2nd metacarpal bone is also called the
Medial splint bone
3rd metacarpal bone is also called the
Cannon bone
4th metacarpal bone is also called the
Lateral splint bone
What is another name for fetlock?
Metacarpophalangeal joint
What is another name for pastern?
Interphalangeal joint
The extensor process attaches on the
2nd phalanx
The fossa on the cranial side of the humerus is called:
The Radial fossa
The fossa on the caudal side of the humerus is called the:
Olecranon fossa
The glenoid cavity is on the _____ side of the humerus when you are looking at the _____ view.
Caudal; Lateral
Looking at the caudal view of the humerus, you know that the Deltoid tuberosity is lateral and therefore the _____ and _____ are also lateral.
Tricipital line and Lateral epicondyle
On the radius and ulna, the side that the ulna is closest to is _____
Lateral
