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The term forehand refers to the front half of a horse's body.


Balance

A
horse The horse (''Equus ferus caballus'') is a domesticated, one-toed, hoofed mammal. It belongs to the taxonomic family Equidae and is one of two extant subspecies of ''Equus ferus''. The horse has evolved over the past 45 to 55 million y ...
's "motor" is located in his hindquarters, and a horse that is heavy on the forehand (weight primarily on the forehand) is not able to properly move forward with
impulsion Impulsion is the movement of a horse when it is going forward with controlled power. Related to the concept of collection, impulsion helps a horse effectively use the power in its hindquarters. To achieve impulsion, a horse is not using speed, b ...
. For good impulsion, a horse must either be balanced or have most of its weight tilted back toward its hindquarters. Good riding aims to help transfer some of the animal's body weight back, getting the horse "off the forehand," but some riding disciplines require a greater amount of this transfer of weight (or "
collection Collection or Collections may refer to: * Cash collection, the function of an accounts receivable department * Collection (church), money donated by the congregation during a church service * Collection agency, agency to collect cash * Collectio ...
") than others. Sports such as
dressage Dressage ( or ; a French term, most commonly translated to mean "training") is a form of horse riding performed in exhibition and competition, as well as an art sometimes pursued solely for the sake of mastery. As an equestrian sport defined b ...
and
show jumping Show jumping is a part of a group of English riding equestrianism, equestrian events that also includes dressage, eventing, Show hunter, hunters, and equitation. Jumping classes are commonly seen at horse shows throughout the world, including th ...
require some of the greatest transfers of weight, while others, such as
western pleasure Western pleasure is a western style competition at horse shows that evaluates horses on manners and suitability of the horse for a relaxed and slow but collected gait cadence, along with calm and responsive disposition. The horse is to appear to ...
, require a great deal less. However, it is beneficial for all horses to not travel "on the forehand," as this decreases the concussion placed on the front legs and their joints, thereby decreasing the risk of concussion-related lamenesses such as
sidebone Sidebone is a common condition of horses, characterized by the ossification of the collateral cartilages of the coffin bone. These are found on either side of the foot protruding above the level of the coronary band. The lateral cartilages suppor ...
,
ringbone {{No footnotes, date=February 2020 Ringbone is exostosis (bone growth) in the pastern or coffin joint of a horse. In severe cases, the growth can encircle the bones, giving ringbone its name. It has been suggested by some authors that such a colloqu ...
, and others. Certain conformational faults will encourage a horse to travel on the forehand, thereby making it more difficult for a rider to attain the shift in weight (although talented riders can usually train any horse to travel better with enough time). Horses that are built "downhill," with their hindquarters especially high, will be harder to collect.


Anatomy of the forehand

{{see also, Equine forelimb anatomy


Muscles, tendons, and ligaments

The ''
masseter In human anatomy, the masseter is one of the muscles of mastication. Found only in mammals, it is particularly powerful in herbivores to facilitate chewing of plant matter. The most obvious muscle of mastication is the masseter muscle, since it ...
'', or cheek muscle, opens and closes the
jaw The jaw is any opposable articulated structure at the entrance of the mouth, typically used for grasping and manipulating food. The term ''jaws'' is also broadly applied to the whole of the structures constituting the vault of the mouth and serv ...
and allows chewing. The ''Brachiocephalicus'' is a wide strap-like muscle that begins at the base of the
skull The skull is a bone protective cavity for the brain. The skull is composed of four types of bone i.e., cranial bones, facial bones, ear ossicles and hyoid bone. However two parts are more prominent: the cranium and the mandible. In humans, the ...
behind the jaw and ends below the point of the
shoulder The human shoulder is made up of three bones: the clavicle (collarbone), the scapula (shoulder blade), and the humerus (upper arm bone) as well as associated muscles, ligaments and tendons. The articulations between the bones of the shoulder mak ...
to the
humerus The humerus (; ) is a long bone in the arm that runs from the shoulder to the elbow. It connects the scapula and the two bones of the lower arm, the radius and ulna, and consists of three sections. The humeral upper extremity consists of a roun ...
. This muscle moves the head from side to side, pulls the
scapula The scapula (plural scapulae or scapulas), also known as the shoulder blade, is the bone that connects the humerus (upper arm bone) with the clavicle (collar bone). Like their connected bones, the scapulae are paired, with each scapula on eithe ...
forward, raises it in collection, and swings the
foreleg A forelimb or front limb is one of the paired articulated appendages (limbs) attached on the cranial (anterior) end of a terrestrial tetrapod vertebrate's torso. With reference to quadrupeds, the term foreleg or front leg is often used instead ...
forward. It is well developed for good movement, and too strong a rein contact inhibits free forward movement. The ''Sternocephalic'' begins at the jowl and ends at the
sternum The sternum or breastbone is a long flat bone located in the central part of the chest. It connects to the ribs via cartilage and forms the front of the rib cage, thus helping to protect the heart, lungs, and major blood vessels from injury. Sh ...
. This muscle moves the head and neck. In ewe-necked or bull-necked horses, this muscle is overdeveloped, and is difficult to get into a relaxed shape. The '' Rhomboideus'' begins at the ''
Nuchal ligament The nuchal ligament is a ligament at the back of the neck that is continuous with the supraspinous ligament. Structure The nuchal ligament extends from the external occipital protuberance on the skull and median nuchal line to the spinous proces ...
'' and ends at the scapula. It lifts the shoulder and forehand, and pulls the scapula forward. The ''
Splenius The splenius muscles are: *Splenius capitis muscle *Splenius cervicis muscle Their origins are in the upper thoracic and lower cervical spinous process The spinal column, a defining synapomorphy shared by nearly all vertebrates, Hagfish are ...
'' begins behind the
poll Poll, polled, or polling may refer to: Figurative head counts * Poll, a formal election ** Election verification exit poll, a survey taken to verify election counts ** Polling, voting to make decisions or determine opinions ** Polling places o ...
and ends at the beginning of the ''
Trapezius The trapezius is a large paired trapezoid-shaped surface muscle that extends longitudinally from the occipital bone to the lower thoracic vertebrae of the spine and laterally to the spine of the scapula. It moves the scapula and supports the ...
''. This muscle turns and extends the neck, and makes up the topline if well developed. The ''Trapezius'' is a flat, sheet-like muscle that begins at the
Occipital bone The occipital bone () is a neurocranium, cranial dermal bone and the main bone of the occiput (back and lower part of the skull). It is trapezoidal in shape and curved on itself like a shallow dish. The occipital bone overlies the occipital lobe ...
and ends at the spines of the 7th cervical and all the thoracic vertebrae. It lifts the shoulder and forehand, and if this muscle is well developed, the horse will work in a good outline. The ''Nuchal'' ligament begins at the poll and ends at the withers, and helps the muscles in the neck support the head. The '' deltoid'' begins at the scapula and ends at the humerus. The deltoid flexes the shoulder joint, and will load the shoulder if overdeveloped. The ''
Supraspinatus The supraspinatus (plural ''supraspinati'') is a relatively small muscle of the upper back that runs from the supraspinous fossa superior portion of the scapula (shoulder blade) to the greater tubercle of the humerus. It is one of the four rotator ...
'' begins below the ''trapezius'' and ends at the point of the shoulder; it maintains the shoulder in extension. The ''
Latissimus dorsi The latissimus dorsi () is a large, flat muscle on the back that stretches to the sides, behind the arm, and is partly covered by the trapezius on the back near the midline. The word latissimus dorsi (plural: ''latissimi dorsorum'') comes from L ...
'' begins at the lower thoracic vertebrae and ends at the back of the humerus; it flexes the shoulder and pulls the foreleg back. The ''Triceps'' flex the shoulder and extend the elbow; the ''Biceps'' flex the elbow and extend the shoulder. The pectoral muscles help pull the foreleg forward. The ''Triceps Brachii'' extend the elbow joint; the ''
Biceps Brachii The biceps or biceps brachii ( la, musculus biceps brachii, "two-headed muscle of the arm") is a large muscle that lies on the front of the upper arm between the shoulder and the elbow. Both heads of the muscle arise on the scapula and join t ...
'' flex the elbow joint. The ''Extensor carpus'' extends the knee. The ''Flexor carpus'' flexes the knee. The ''Digital extensor'' extends the toe and knee. The ''digital flexor'' flexes the toe and knee and extends the elbow.


See also

*
Muscular system of the horse Types of muscle There are 3 types of muscle, all found within the equine: * Skeletal muscle: Contraction of these muscles leads to the muscle pulling a tendon, which in turn pulls a bone. Moving a bone results in either flexing or extending a joi ...
*
Equine forelimb anatomy Good conformation in the limbs leads to improved movement and decreased likelihood of injuries. Large differences in bone structure and size can be found in horses used for different activities, but correct conformation remains relatively simil ...


Reference Links


Rara Equus


Horse anatomy