Definition
The extensor tendons of the equine forelimb and hindlimb are strong collagenous structures that connect muscles to bone allowing extension of the distal limb joints.
They are located on the dorsal aspect of the forelimb and the cranial aspect of the hindlimb and function primarily during the swing phase of the stride to extend the digit, prevent toe dragging and ensure accurate hoof placement.
They also contribute to limb stability and proprioception by providing sensory feedback to the nervous system.
The main extensor tendons are the common digital extensor and lateral digital extensor in the forelimb and the long digital extensor and lateral digital extensor in the hindlimb.
In the forelimb, the common digital extensor muscle originates from the extensor fossa on the lateral epicondyle of the humerus.
Its tendon passes over the dorsal aspect of the carpus beneath the extensor retinaculum, continues down the dorsal surface of the third metacarpal bone and crosses the fetlock before inserting on the extensor process of the distal phalanx, P3.
The lateral digital extensor muscle originates from the lateral epicondyle of the humerus, the lateral collateral ligament of the elbow and the proximal radius.
Its tendon runs down the lateral aspect of the limb before joining the common digital extensor tendon in the distal metacarpus.
In the hind limb, the long digital extensor muscle originates from the extensor fossa of the femur.
The tendon passes over the dorsal aspect of the hock, travels along the dorsal metatarsus and inserts on the extensor process of the distal phalanx.
The lateral digital extensor originates from the lateral collateral ligament of the stifle and proximal fibula before joining the long digital extensor tendon proximal to the fetlock.
The forelimb extensor muscles are innervated by the radial nerve, while the hindlimb extensors are supplied by the common fibula, peroneal
nerve.
The extensor tendons extend the distal interphalangeal, proximal interphalangeal and fetlock joints during the swing phase of locomotion.
This action lifts the toe clear of the ground and positions the hoof correctly before landing.
Although they carry lower loads than the flexor tendons, they help maintain alignment of the digit and stabilize the dorsal aspect of the limb.
They also have an important proprioceptive role, transmitting information about limb position to the central nervous system to coordinate movement and balance.
In the hind limb, the long digital extensor works with the reciprocal apparatus to produce efficient coordinated movement between the stifle, hock and distal limb.
Definition
The extensor tendons of the equine forelimb and hindlimb are strong collagenous structures that connect muscles to bone allowing extension of the distal limb joints.
They are located on the dorsal aspect of the forelimb and the cranial aspect of the hindlimb and function primarily during the swing phase of the stride to extend the digit, prevent toe dragging and ensure accurate hoof placement.
They also contribute to limb stability and proprioception by providing sensory feedback to the nervous system.
The main extensor tendons are the common digital extensor and lateral digital extensor in the forelimb and the long digital extensor and lateral digital extensor in the hindlimb.
In the forelimb, the common digital extensor muscle originates from the extensor fossa on the lateral epicondyle of the humerus.
Its tendon passes over the dorsal aspect of the carpus beneath the extensor retinaculum, continues down the dorsal surface of the third metacarpal bone and crosses the fetlock before inserting on the extensor process of the distal phalanx, P3.
The lateral digital extensor muscle originates from the lateral epicondyle of the humerus, the lateral collateral ligament of the elbow and the proximal radius.
Its tendon runs down the lateral aspect of the limb before joining the common digital extensor tendon in the distal metacarpus.
In the hind limb, the long digital extensor muscle originates from the extensor fossa of the femur.
The tendon passes over the dorsal aspect of the hock, travels along the dorsal metatarsus and inserts on the extensor process of the distal phalanx.
The lateral digital extensor originates from the lateral collateral ligament of the stifle and proximal fibula before joining the long digital extensor tendon proximal to the fetlock.
The forelimb extensor muscles are innervated by the radial nerve, while the hindlimb extensors are supplied by the common fibula, peroneal
nerve.
The extensor tendons extend the distal interphalangeal, proximal interphalangeal and fetlock joints during the swing phase of locomotion.
This action lifts the toe clear of the ground and positions the hoof correctly before landing.
Although they carry lower loads than the flexor tendons, they help maintain alignment of the digit and stabilize the dorsal aspect of the limb.
They also have an important proprioceptive role, transmitting information about limb position to the central nervous system to coordinate movement and balance.
In the hind limb, the long digital extensor works with the reciprocal apparatus to produce efficient coordinated movement between the stifle, hock and distal limb.
The rest of this transcript — segmented and speaker-labeled, so you land on the exact moment something was said
Search every transcript — by keyword, by phrase, or by meaning, across every show Radar indexes
Trends — what is surging across podcasts, measured against its own baseline
Alerts — when a name you follow appears in a newly indexed episode
No account is needed to search Radar.