Changes

*'''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 [[Bones and Cartilages - Horse Anatomy#Metacarpals and Metatarsals|third metacarpal]](cannon) and distal [[Bones and Cartilages - Horse Anatomy#Carpal Bones|carpal bones]].  It lies within the groove between the second and fourth [[Bones and Cartilages - Horse Anatomy#Metacarpals and Metatarsals|metacarpals]](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.

The suspensory ligament (middle interosseous muscle) is an entirely tendinous structure. The SL originates on the proximal aspect of the [[Bones and Cartilages - Horse Anatomy#Metacarpals and Metatarsals|third metacarpal]] (cannon) and distal [[Bones and Cartilages - Horse Anatomy#Carpal Bones|carpal bones]].  It lies within the groove between the second and fourth [[Bones and Cartilages - Horse Anatomy#Metacarpals and Metatarsals|metacarpals]] (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''']]