Where Does The Superficial Digital Flexor Tendon Originate Horse?

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On equine thoracic limb, the superficial digital flexor tendon (SDFT) arises from the superficial digital flexor muscle at the level of the carpus.

Where does superficial digital flexor tendon originate?

The superficial digital flexor originates from the proximal aspect of the caudal surface of the humerus and inserts on the first and second phalanges.

Where does superficial digital flexor tendon insert horse?

The superficial digital flexor tendon is located in the fore and hind limbs and runs along the back of the cannon bones and connects the short pastern to the coffin bone (LLC, HorseDVM). The superficial digital flexor tendon is responsible for the stabilization and support of the fetlock joint.

What is the superficial digital flexor tendon in horses?

The forelimb superficial digital flexor tendon (SDFT) is an energy-storing tendon that is highly susceptible to injury during activities such as galloping and jumping, such that it is one of the most commonly reported causes of lameness in the performance horse.

Where is the digital flexor tendon?

The deep digital flexor tendon (DDFT) extends from behind the knee and hock, down the back of the cannon, behind the fetlock and pastern joints and ultimately attaches to the underside of the pedal bone within the hoof capsule.

Where is the tendon origin?

The tendon is derived from the ectoderm (such as ligaments) and mesoderm. Progenitor cells of the tendon (tenocytes) originate from the ventral and lateral ectodermal area.

What Innervates superficial digital flexor?

Flexor digitorum superficialis is innervated by muscular branches of the median nerve, derived from roots C8 and T1 that arises from the medial and lateral cords of the brachial plexus. The skin that overlies the muscle is supplied by roots C6-8 and T1.

What is the most common site of tendonitis in the horse?

Tendinitis is most common in horses used at fast work, particularly racehorses. The problem is seen in the digital flexor tendons and is more common in the forelimb than in the hindlimb. In racehorses, the superficial digital flexor is involved most frequently.

Which tendon is most commonly injured in the racehorse?

Common Injuries
Superficial digital flexor tendon (SDFT) injury. This type of tendon injury is common among horses, especially Thoroughbred racehorses. It occurs more often in the forelimb, but can also affect the hindlimb.

What is EDC in tendons?

Extensor digitorum (ED) muscle, also known as extensor digitorum communis (EDC) muscle, is a muscle of the superficial layer of the posterior compartment of the forearm and with other extensor muscles arises from a common tendon attached to the lateral epicondyle of the humerus.

Where is cannon bone on horse?

Below the knee is the cannon bone which is also known as the 3rd metacarpal. 55 million years ago when the Eohippus existed, the cannon bone used to be the 3rd toe of the foot. Its fusion took place in order to increase height and power of the limb. Behind the cannon bone are the splint bones.

What does the deep digital flexor tendon Do horse?

Its main job is to flex the leg, but it also plays a support role at the heel, where the tendon fibers fan out to pass over the navicular bone. Injuries in the lower section of this tendon, from mid-pastern into the foot, are common for sport horses.

What is the digital flexor tendon sheath?

The digital flexor tendon sheath (DFTS) is a synovial cavity occupying the distal third of the palmar metacarpus/plantar metatarsus and the palmar/plantar pastern, to the level of the middle phalanx.

Where is the common digital extensor tendon located?

The common digital extensor muscle arises on the lateral epicondyle and runs distally, passing through the lateral distal sulcus of the radius. Its distal CDET divides into four distinct tendons, progressing distally after crossing the dorsal surface of the carpal joint.

Do tendons have origins and insertions?

Basic Anatomy of a Tendon
The purpose of the tendon is to transmit forces generated from the muscle to the bone to elicit movement. The proximal attachment of the tendon is also known as the origin and the distal tendon is called the insertion.

What muscles originate from the common extensor origin?

The common extensor origin of the elbow classically refers to the common tendon of the following forearm extensor muscles, which form a common footprint at the lateral epicondyle ^1,2: extensor carpi radialis brevis (ECRB) extensor digitorum communis (EDC) extensor digiti minimi (EDM)

What is the difference between tendon of origin and tendon of insertion?

Origin is relatively the less movable end of the muscle/tendon that is attached to a bone. Insertion is the more flexible end of the muscle that is usually attached to a bone via tendons. It is the proximal end that is attached to the less movable bone.

What is the common origin of the superficial forearm flexors?

The superficial anterior forearm muscles share a common origin on the common flexor tendon that arises from the medial epicondyle of humerus.

Where does the suspensory ligament originate in the horse?

The ligament begins at its attachment to the back of the upper cannon bone in both the fore and hindlimbs. It runs downwards close to the back of the cannon bone before dividing into two branches each of which attaches to one of the sesamoid bones at the back of the fetlock.

What Innervates the common digital extensor horse?

The extensors are located at the craniolateral position on the forearm, almost all originate from the lateral epicondyle of the humerus. All of these muscles are innervated by the radial n.

What is the root of tendonitis?

Overuse or strain on a joint can inflame tendons and result in tendinitis. Tendinitis is inflammation of the thick fibrous cords that attach muscle to bone. These cords are called tendons. The condition causes pain and tenderness just outside a joint.