Equine crus muscles and associated PL structures

Gastrocnemius

Soleus

Superficial digital flexor

Deep digital flexor

List the caudomedial muscles of the crus (4)

Long digital extensor

Lateral digital extensor

Cranial tibial

Peroneus tertius

List the craniolateral muscles of the crus (4)

Gastrocnemius

Soleus- fused to lateral head of gastroc

Superficial digital flexor

List the extensors of the tarsal joint (3)

Triceps surae

The functional unit formed by the fusion of the soleus to the gastroc

The functional unit formed by the fusion of the soleus to the gastroc

3-headed muscle of the calf

What is the triceps surae

Tibial nerve

The caudomedial muscles of the crus are innervated by...

Caudomedial muscles of the crus

Gastroc

Soleus

SDF

DDF

Targets of innervation of tibial nerve

Long digital extensor

Lateral digital extensor

Cranial tibial muscle

Peroneus tertius

List the flexors of the tarsal joint (4)

Long digital extensor

Lateral digital extensor

List the extensors of the pelvic digits (2)

SDF

DDF

List the flexors of the pelvic digital joints (2)

Peroneal nerve branches

The craniolateral muscles of the crus are innervated by...

Craniolateral muscles of the crus

Long digital extensor

Lateral digital extensor

Cranial tibial muscle

Pernoneus tertius

Targets of innervation of peroneal nerve branches

Medial head

What head of the DDF has a separate tendon from the others

Cranial: sartorius

Caudal: pectineus

What are the borders of the femoral triangle

Femoral artery

Femoral vein

Saphenous nerve

Deep inguinal lymph nodes

What structures are contained in the femoral triangle

SDF and Gastrocnemius major components

Minor components: fascia of biceps femoris and semitendinosus

What are the components of the common calcanean tendon

SDF

Peroneus tertius (completely tendon)

What are the components of the pelvic limb reciprocal apparatus

The stifle and hock act in unison

Stifle flexes= hock flexes

Stifle extends= hock extends

What is the functional effect of the pelvic limb reciprocal apparatus

Short digital extensor muscle

What is the only muscle that is present in the metatarsus

Only muscle present in the metatarsus

Lies between the tendons of the long and lateral digital extensors

What is the short digital extensor muscle

Caudal tibial muscle

The superficial head of the DDF is also referred to as...

Superficial head of the DDF

The caudal tibial muscle refers to...

Superficial head

Medial head (separate tendon)

Lateral head (very large and visible from both sides)

What are the heads of the DDF

Accessory ligament of the DDF

The distal check ligament refers to...

Distal check ligament

The accessory ligament of the DDF is also known as...

Distal check ligament may or may not be there

No proximal check ligament

What are the check ligaments of the pelvic limb

Band of connective tissue that holds muscle tendons in place

What is a retinaculum

Retinaculum

Band of connective tissue that holds muscle tendons in place

Crural/ proximal extensor retinaculum

Tarsal/ middle extensor retinaculum

Metatarsal/ distal extensor retinaculum

Lateral (for lateral digital extensor)

What are the 4 extensor retinacula of the equine pelvic limb

Flexor retinaculum

Band of connective tissue that contains the tendons of the lateral and superficial heads of the DDF and is enveloped by the tarsal synovial sheath

Forms the flexor canal

Contains tendons of lateral and superfical heads of DDF

Enveloped by the tarsal synovial sheath

What is the flexor retinaculum

Inflammation of the tarsal sheath

What is thoroughpin

Thoroughpin

Inflammation of the tarsal sheath