Equine caudal hindlimb muscles

Extensor digitorum longus origin

Lateral condyle of the femur

Extensor digitorum longus insertion

Extensor process of distal phalanx, secondarily on proximal and middle phalanges

Extensor digitorum longus function

Extends the digit, flexes the hock

Extensor digitorum longus nerve innervation

Peroneal nerve

Peroneus tertius origin

Lateral condyle of the femur

Peroneus tertius insertion

MT3, T4 and calcaneus

Peroneus teritus function

Flexes the hock, part of the reciprocal apparatus

Peroneus tertius nerve innervation

Peroneal nerve

Gastrocnemius origin

Medial and lateral supracondyle tuberosities of the femur

Gastrocnemius insertion

Common calcaneal tendon

Gastrocnemius function

Extends the hock, flexes the stifle

Gastronemius nerve innervation

Tibial nerve

HL flexor digitorum superficialis origin

Supracondylar fossa of the femur

HL flexor digitorum superficialis insertion

Plantar on P1 and P2

HL flexor digitorum superficialis function

Extends the hock and flexes the digit

HL flexor digitiorum superficialis nerve innervation

Tibial nerve

HL suspensory origin

MT3, calcaneus and T4

HL suspensory insertion

Proximal sesamoid bones and branches to join extensor digitorum longus

HL suspensory function

Counteracts overextension of the HL fetlock joint

HL suspensory nerve innervation

Tibial nerve