Nerve Supply To The Pelvic Limb Flashcards
The lumbosacral plexus consists of the intermingling of the ventral spinal branches of spinal nerves ___-___
L4-S4
Femoral spinal nerve origin
L4-L6
Obturator spinal nerve origin
L4-L6
Sciatic spinal nerve origin
L6-S2
Pudendal spinal nerve origin
S2-S4
Muscle protecting the femoral nerve;
Another muscle lies above the femoral nerve
Iliopsoas
Sartorius
Nerve that runs through the vascular lacuna wth branches that run with the lateral circumflex femoral artery
Femoral
The femoral nerve supplies mostly
Muscle, but has some cutaneous function
Branch of the femoral nerve that supplies the cutaneous area of the media portion of the pelvic limb; also supplies the medial crus and dorsomedial skin of the tarsus and metatarsus
Saphenous
Nerve that supplies the flexors of the hip and extensors of the stifle
Femoral
Clinical signs of femoral nerve damage
Collapse of the stifle
Inability to support weight due to paralysis of quadriceps femoris
Analgesia over medial crural region
Nerve that exits the pelvis through the Obturator foramen
Obturator
Nerve that supplies the adductors of the hip
Obturator
Nerve that does not provide any skin innervation, but does inner ate part of the hip and stifle joints
Obturator
Nerve that emerges though the greater ischiatic foramen
Cranial gluteal
Nerve that innervates the abductors of the hip (all heads of the gluteal muscle)
Cranial gluteal
Nerve that has no skin innervation, but does innervates part of the hip
Cranial gluteal
Clinical signs of Obturator nerve damage
Non-compensated abduction of the limb
In cow, bilateral damage (calving paralysis) will cause the animal to go down in a split
Clinical signs of cranial gluteal nerve damage
Little alteration in gait
Partial atrophy of middle gluteal
Nerve that runs over the sacrosciatic ligament
Caudal gluteal
Nerve that innervates partial supply to the extensors of the hip and abductors of the hip
Caudal gluteal
Nerve with no skin or joint innervation
Caudal gluteal
Clinical signs of caudal gluteal nerve damage
Little alteration in gait
Nerve that emerges through the greater ischiatic foramen and passes on the ventral surface of the sacrosciatic ligament and descends into the thigh medial to the biceps femoris muscle
Sciatic
Nerve that supplies most hindlimb muscles directly or via branches. Flexors of the stifle, extensors and flexors of the tarsus, extensors and flexors of the digit
Sciatic
Nerve that innervates almost all of the skin from the stifle to the hoof; supplies part of the hip joint and all joints dismally via branches
Sciatic
Clinical signs of sciatic nerve damage
Poor limb flexion
Extended stifle
Extended tarsus
Overflexed fetlock with wight borne on dorsal surface of digit
Analgesia of lateral limb and entire foot
Caudal division of the sciatic nerve that passes through the gastrocnemius
Tibial
Nerve that comes off of the tibial before the tibial passes between the heads of the gastrocnemius
Caudal cutaneous sural
Division of the tibial nerve proximal to the tarsus
Medial and lateral plantar nerves
Nerve that innervates the flexors of the stifle, extensors of the tarsus, and flexors of the digit
Tibial
Nerve that supplies the skin caudolateral from stifle to hoof
Also supplies the stifle joint, plantar aspects of the fetlock, pastern and coffin joints, and the navicular bursa
Tibial
Clinical signs of damage to the tibial nerve
Hypermetric gait with dropped hock (hyperflexion of the tarsus at rest)
Inability to flex digit
Analgesia of plantar metatarsus and digit
Cranial division of the sciatic nerve
Common peroneal
Nerve that gives off the lateral cutaneous sural nerve
Common peroneal
Division of the common peroneal nerve
Superficial and deep peroneal nerves
Divisions of the deep peroneal nerve
Medial dorsal metatarsal nerve
Lateral dorsal metatarsal nerve
Nerve that innervates the flexors of the tarsus and extensors of the digit
Common peroneal nerve
Nerve that supplies the skin over the dorsolateral surface of the crus and pets, tarsal joints, fetlock joint, and dorsal portions of pastern and coffin joints
Common peroneal
Clinical signs of damage to the common peroneal nerve
Inability to flex the tarsus
Inability to extend the digit
Hyperextension of the hock
Hyperflexion of the digit
Fetlock knuckles during walking
Dragged toe when walking
Analgesia of dorsolateral pes from the tarsus to the fetlock
Stringhalt
Hypermetric, hyperflexion of the leg
Tarsal joint innervation
Deep peroneal nerve
Fetlock joint innervation
Medial dorsometatarsal nerve
Lateral dorsometatarsal nerve
Medial plantar nerve
Lateral plantar nerve
Plantar pastern and coffin joint innervation
Medial plantar digital nerve
Lateral plantar digital nerve
Dorsal pastern and coffin joint innervation
Medial dorsal digital nerve
Lateral dorsal digital nerve
The most important region of the equine pelvic limb
Distal limb
