<P> The anatomy of the forelegs begin at the scapula . This is the shoulder in which provides the ease of movement as it is connected to various bones surrounding it such as the cervical vertebra ( a section of the spine ) . The next bone is the humerus which leads onto the radius below . The radius is then connected to the bones of the knee . The carpus is located at front of the knee and the pisiform is the back of the knee . 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 . It 's fusion took place in order to increase height and power of the limb . Behind the cannon bone are the splint bones . The splint bones are also known as the 2nd and 4th metacarpal and fused 25 - 35 million years ago during the time of the Miohippus . They provide extra strength and support of the cannon bone and used to be the 2nd and 4th toes of the foot . Below the cannon bone is the fetlock joint in which lays a structure if many bones . Firstly are the sesamoid bones that act as part of the system that allows the leg to drop as pressure is applied and spring back up as pressure is released . Below this is the proximal phalanx also known as the long pastern which is followed by the middle phalanx ( short pastern ) . Below these bones are the navicular bone and the distal phalanx . the distal phalanx can be known as the coffin bone or the pedal bone . Below the navicular bone is the navicular bursa . There are three main muscle groups of the forelimb . The triceps muscle straightens the elbow and foreleg , running from the elbow to the bottom of the shoulder blade . The muscles which extend the lower leg are called extensor muscles , while the flexion of the lower leg joints is achieved through movement of the flexor muscles . There are five main muscles and muscle groups in the hind legs . The vastus muscle flexes the hind leg and runs from stifle to hip , while the gluteal muscles , the large muscles in the hip , extend the femur . Forward motion and flexion of the hind legs is achieved through the movement of the quadriceps group of muscles on the front of the femur , while the muscles at the back of the hindquarters , called the hamstring group , provide forward motion of the body and rearward extension of the hind limbs . Extension of the hock is achieved by the Achilles tendon , located above the hock . </P>
<P> The anatomy of the forelegs begin at the scapula . This is the shoulder in which provides the ease of movement as it is connected to various bones surrounding it such as the cervical vertebra ( a section of the spine ) . The next bone is the humerus which leads onto the radius below . The radius is then connected to the bones of the knee . The carpus is located at front of the knee and the pisiform is the back of the knee . 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 . It 's fusion took place in order to increase height and power of the limb . Behind the cannon bone are the splint bones . The splint bones are also known as the 2nd and 4th metacarpal and fused 25 - 35 million years ago during the time of the Miohippus . They provide extra strength and support of the cannon bone and used to be the 2nd and 4th toes of the foot . Below the cannon bone is the fetlock joint in which lays a structure if many bones . Firstly are the sesamoid bones that act as part of the system that allows the leg to drop as pressure is applied and spring back up as pressure is released . Below this is the proximal phalanx also known as the long pastern which is followed by the middle phalanx ( short pastern ) . Below these bones are the navicular bone and the distal phalanx . the distal phalanx can be known as the coffin bone or the pedal bone . Below the navicular bone is the navicular bursa . There are three main muscle groups of the forelimb . The triceps muscle straightens the elbow and foreleg , running from the elbow to the bottom of the shoulder blade . The muscles which extend the lower leg are called extensor muscles , while the flexion of the lower leg joints is achieved through movement of the flexor muscles . There are five main muscles and muscle groups in the hind legs . The vastus muscle flexes the hind leg and runs from stifle to hip , while the gluteal muscles , the large muscles in the hip , extend the femur . Forward motion and flexion of the hind legs is achieved through the movement of the quadriceps group of muscles on the front of the femur , while the muscles at the back of the hindquarters , called the hamstring group , provide forward motion of the body and rearward extension of the hind limbs . Extension of the hock is achieved by the Achilles tendon , located above the hock . </P>
where is the cannon bone located on a horse
where is the cannon bone located on a horse
Below the knee
Below the knee