Normal RadiographicAnatomy of the

Equine Hind Limb

Dr. PackFirst Year Radiology

The Equine Stifle

• 2 views normally– Lateral and CC– Slight oblique for OCD

• Sedation

• Thick muscles

• Film placement

www.upei.ca/~vetrad

Equine Stifle – Lateral View

• Base/Apex of patella• Medial and Lateral

ridges of femoral trochlea

• Extensor fossa of femur

• Fibula• Tibial tuberosity

www.upei.ca/~vetrad

Equine Stifle CC View

• Patella• Condyles• Epicondyles• Intercondylar

eminences• Fibula• Tibial tuberosity

www.upei.ca/~vetrad

Things that make you go hmm …

www.upei.ca/~vetrad

Equine Tarsus

• 4 routine radiographs

• Dorso-plantar

• Lateral

• DMPLO

• DLPMO

• Tarsus is very complex

www.upei.ca/~vetrad

Equine Tarsal Joints

• Tibiotarsal• Proximal intertarsal• Distal intertarsal• Tarsometatarsal

www.upei.ca/~vetrad

Equine Tarsus DP View

• Tibia• Medial malleolus• Lateral malleolus• Tibial cochlea• Talus

– Medial trochlear ridge– Lateral trochlear ridge

• Calcaneous

www.upei.ca/~vetrad

Equine Tarsus DP View (cont)

• Central tarsal bone• 2nd tarsal bone• 3rd tarsal bone• 4th tarsal bone (2

story bone)• 1st tarsal bone

(occasionally seen)• 2nd, 3rd,4th metatarsal

bones

www.upei.ca/~vetrad

Equine Tarsus Lateral View

• Sustentaculum tali• Calcaneous• Medial/lateral ridges

of the trochlear talus• Tarsal bones

– Proximal row– Distal row

• Metatarsals

www.upei.ca/~vetrad

Equine Tarsus DLPMO view

• Surfaces seen?• Distal intermediate

ridge of the tibia (DIRT)

• Trochlear ridges• Calcaneous• Tarsal bones• Metatarsal bones

www.upei.ca/~vetrad

Equine Tarsus DMPLO View

• Surfaces seen?• Distal intermediate

ridge of the tibia (DIRT)

• Trochlear ridges– Larrys nose

• Calcaneous• Tarsal bones• Metatarsal bones

www.upei.ca/~vetrad

Normal RadiographicAnatomy of the

Equine Hind Limb

Dr. Pack

www.upei.ca/~vetrad/Anatomy