Pelvic Limb Lecture 2 Flashcards
What are the craniolateral muscles that act as flexors of the tarsus
Cranial tibial
Long digital extensor
Fibularis longus
Cranial tibial
Origin
Insertion
O: Extensor groove and associated area of tibia
I:Plantar surface of MT I and II
Action of cranial tibial
Flex tarsus
Supinate paw
Long digital extensor
Origin
Insertion
O:Extensor fossa of femur
I: Extensor process of distal phalanges of all digits (2-5)
Action of long digital extensor
Flex tarsus
Extend digits
Fibularis longus
Origin
Insertion
O:Lateral collateral ligament of stifle and lateral condyle of tibia
I:4th tarsal and plantar surfaces of base of all MT
Action of fibularis longus
Flex tarsus
Pronate paw
Name the two retinaculum on flexor surface of tarsus
Crural extensor retinaculum (more dorsal)
Tarsal Extensor retinaculum (more ventral)
What muscles pass deep to crural retinaculum and just proximal to the tarsus
Long digital extensor and cranial tibial
What muscle passes deep to tarsal retinaculum
Long digital extensor
What are the caudal group of muscles that act as extensors of the tarsus
Gastrocnemius
Superficial digital flexor
Biceps femoris tendon
Gracilis tendon
Semitendinosus tendon
What are the primary contributors to the common calcaneal tendon
Gastrocnemius
Superficial digital flexor
What muscle contributes to the common calcaneal tendon in cats
Soleus
Gastrocnemius
Origin
Insertion
O:Medial and lateral supracondylar tuberosities of femur (fabella in tendon of origin)
I:Proximal dorsal surface of tuber calcanei
Gastrocnemius action
Extend tarsus
Flex stifle
Superficial digital flexor
Origin
Insertion
O:Lateral supracondylar tuberosity of femur
I:Proximal dorsal surface of tubercalcaneidigits 2-5
Action of superficial digital flexor
Flex stifle
Extend tarsus
Flex digits
The calcaneal bursa lies where
Under the tendon of SDF as it passes over the tuber calcanei
What acts as flexors of the stifle
Gastrocnemius and SDF
T/F DDF contributes to common calcaneal tendon
F
Soleus attachment in cats is similar to what muscle
Gastrocnemius
What are some common causes of rupturing the common calcanean tendon
Trauma
Fracture of the calcaneus
Degenerative disease
What are some major signs rupturing the common calcanean tendon
Non-weight bearing lameness
Prognosis of rupturing of the common calcanean tendon
Good if apposition of tendons on calcaneus can be achieved
How to repair rupture of common calcanean tendon
Surgical repair and support with hock braces work well for management of a ruptured common calcaneal tendon in dogs
Muscles that extend the digits
Long digital extensor
Lateral digital extensor
Muscles that flex the digits
SDF
DDF
Digital extensor insertions
1-Long digital extensor
-Distal phalanges of digits 2-5
2-Lateral digital extensor
-Proximal phalanx of digit 5
T/F lateral digital extensor lies superficial to the fibularis longus
F
Deep
DDF
Origin
Insertion
O:Caudal aspect of proximal tibia (2 heads; medial and lateral digital flexors)
I: Flexor tubercle of distal phalanges of digits 2-5
T/F Both heads (medial and lateral) cross the tarsus together
F
Individually
The lateral digital flexor head passes over what
Sustentaculum tali and held in place by the flexor retinaculum
T/F Both heads of the DDF join to form a single tendon (if T where)
T
At level of 2nd (distal) row of tarsal bones
