Changes

The SDFT arises from the superficial digital flexor muscle at the level of the [[Joints and Ligaments - Horse Anatomy#Thoracic Limb|carpus]]. At this level, the tendon combines with the accessory ligament ('''superior check ligament'''). The tendon passes distally on the caudal aspect of the limb, running through the '''carpal canal''' to the metacarpus. The SDFT and DDFT run within a synovial structure termed the '''carpal sheath'''.  

The SDFT arises from the superficial digital flexor muscle at the level of the [[Joints and Ligaments - Horse Anatomy#Thoracic Limb|carpus]]. At this level, the tendon combines with the accessory ligament ('''superior check ligament'''). The tendon passes distally on the caudal aspect of the limb, running through the '''carpal canal''' to the metacarpus. The SDFT and DDFT run within a synovial structure termed the '''carpal sheath'''.  

Just proximal to the metacarpophalangeal joint, the SDFT forms a ring-like structure which wraps around the DDFT. This structure is known as the '''manica flexoria'''.  

Just proximal to the [[Joints and Ligaments - Horse Anatomy#Thoracic Limb|metacarpophalangeal]] joint, the SDFT forms a ring-like structure which wraps around the DDFT. This structure is known as the '''manica flexoria'''.  

From the distal metacarpus to the level of the [[Phalanges - Horse Anatomy#Middle Phalanx|middle phalanx]], the SDFT and DDFT are enclosed by another synovial structure, the '''digital sheath'''.

From the distal metacarpus to the level of the [[Phalanges - Horse Anatomy#Middle Phalanx|middle phalanx]], the SDFT and DDFT are enclosed by another synovial structure, the '''digital sheath'''.

*'''Action''': Prevents fetlock hyperextension and limits palmar flexion

*'''Action''': Prevents fetlock hyperextension and limits palmar flexion

The suspensory ligament (middle interosseous muscle) is an entirely tendinous structure. The SL originates on the proximal aspect of the third metacarpal (cannon) and distal carpal bones.  It lies within the groove between the second and fourth metacarpal bones (splint bones), deep to the SDFT and DDFT. Running distally, it bifurcates into two extensor branches which insert on the proximal sesamoid bones. Each branch extends laterally and medially, either side of the [[Joints and Ligaments - Horse Anatomy#Thoracic Limb|metacarpophalangeal]] (feltlock) joint, to join the common digital extensor tendon. The major function of the SL is as part of the '''suspensory apparatus'''. It provides support to the fetlock by preventing hyperextension and also limits palmar flexion.

The suspensory ligament (middle interosseous muscle) is an entirely tendinous structure. The SL originates on the proximal aspect of the third metacarpal (cannon) and distal carpal bones.  It lies within the groove between the second and fourth metacarpal bones (splint bones), deep to the SDFT and DDFT. Running distally, it bifurcates into two extensor branches which insert on the proximal sesamoid bones. Each branch extends laterally and medially, either side of the [[Joints and Ligaments - Horse Anatomy#Thoracic Limb|metacarpophalangeal]] (feltlock) joint, to join the common digital extensor tendon. The major function of the SL is as part of the '''suspensory apparatus'''. It provides support to the [[Joints and Ligaments - Horse Anatomy#Thoracic Limb|metacarpophalangeal]](fetlock) joint by preventing hyperextension and also limits palmar flexion.

[[Image:Equine thoracic limb tendons ML.jpg|200px|thumb|right|'''Tendons of the thoracic limb, mediolateral view''']]

[[Image:Equine thoracic limb tendons ML.jpg|200px|thumb|right|'''Tendons of the thoracic limb, mediolateral view''']]