Lower Limb Flashcards
What is considered thigh?
Hip to knee
What is considered leg?
Knee to ankle
What is the pelvic girdle made up of?
2 coxae
Important structures of the femur
- head of femur
- greater trochanter
- lesser trochanter
- neck of femur
- body
- medial condyle
- lateral condyle
- Medial epicondyle
- lateral epicondyle
- gluteal tuberosity
- patellar surface
Where do you typically find sesamoid bones?
In places of wear and tear
What kind of bone is the patella?
Sesamoid bone
What is the largest sesamoid bone
Patella
What does the anterior of the patella look like?
Rough
What does the posterior of the patella look like?
Smooth, has facets for lateral condyle and medial condylar of femur
What is on the posterior surface of the patella?
Articular surface for the medial and lateral condyles of the femur
What is the top of the patella called? The rounded part
Base
What is the bottom, or pointed part of the patella called?
Apex
What connects to the patella superiorly?
Quadriceps femoris tendon
What connects to the patella inferiorly
Patellar ligament
Where does the patellar ligament attach on the tibia?
Tibial tuberosity
What are the two bones of the leg?
Tibia and fibula
What is the medial bone of the leg?
Tibia
What is the lateral bone of the leg?
Fibula
Which is the smaller leg bone?
Fibula
What are some important landmarks on the tibia?
- medial condyle
- tibial tuberosity
- medial malleolus
- superior articular surfaces
Landmarks of the fibula
- lateral condyle
- head/neck of fibula
- lateral malleolus of fibula
What does the tibia have that the fibula does not?
Medial malleolus
What does the fibula have that the tibia does not
Lateral malleolus
Which one of the leg bones is weight bearing?
Tibia
What bone of the leg is more for muscle attachment?
Fibula
Ankle/foot bones
Calcaneous Talus Cuboid Lateral cuneiform Intermediate cuneiform bone Metatarsal bones Phalanges (prod/mid/dist)
WHat is different about he big toe than the rest of the toes
It does not have a middle phalange
What bones are on the plantar surface of the foot?
Medial sesamoid bone and lateral sesamoid bone on the plantar surface of head of first metatarsal
What spinal nerves are involved in the lumbar plexus?
Ventral rami of spinal nerves L1-L4
What spinal nerves are the sacral plexus involved with?
Ventral rami of spinal nerves of L4-S4
What assists in forming the sacral plexus
Part of L4 ventral ramus and all of L5 ventral ramus join to form the lumbosacral trunk
What are the branches of the lumbar plexus (L1-L4)
- iliohypogastric (L1)
- ilioinguinal (L1)
- genitofemoral (L1-L2)
- lateral cutaneous nerve of the thigh (L2-L3)
- femoral (F2-L4)
- obturator (L2-L4)
Supplies motor to anterior thigh muscles, and cutaneous to anterior and medial sides of the thigh, the leg and foot
Femoral nerve (L2-L4)
Supplies motor to medial thigh muscles, and cutaneous to medial thigh
Obturator (L2-L4)
Branches of the sacral plexus (L4-S4)
- superior gluteal (L4-S1)
- inferior gluteal (L5-S2)
- posterior cutaneous nerve to the thigh (S1-S3)
- nerve to piriformis muscle (S1-S2)
- nerve to quadratic femoris muscle (L5-S1)
- nerve to obturator interns muscle (L5-S2)
- pudendal nerve (S2-S4)
- sciatic nerve (L4-S3)
Gives motor to posterior thigh, all leg, and foot muscles, and cutaneous to leg
Sciatic (L4-S3)
What is the major muscle group and main nerve for the anterior compartment of the thigh?
- Quads: flex thigh at hip joint (marching) and extend leg (kick ball) at knee joint
- femoral nerve
What is the major muscle group and main nerve for the medial compartment of the thigh
- adductor of the thigh
- obturator n
What is the major muscle group and main nerve for the posterior compartment of the thigh
- extend thigh (pull foot back) at hip joint, and flex leg (bend knee) at knee joint
- sciatic n
Mostly tibial part
The femoral nerve contains fibers from ____________ spinal nerves
Ventral rami of L2-L4
The femoral nerve divides into ________ about 4cm inferior to inguinal ligament
Several branches
What does the femoral nerve innervate
Anterior thigh muscles and cutaneous to anterior and medial sides of the knee, the leg, and foot
________ is a termination of the femoral nerve
Saphenous
Innervates skin of anteromedial knee, leg and foot
Saphenous nerve
Obturator nerve contains fibers from _________ spinal nerves
Ventral rami of L2-L4
Innervates medial thigh m uncles, and cutaneous to medial thigh
Obturator
Wha5 innervates the adductor muscles?
Obturator nerve
Sciatic nerve contains fibers from ___________ spinal nerves
Ventral rami of L4-S3
Motor innervation to all of lower limb posteriorly
Sciatic
What two nerves bound together make up the sciatic nerve?
Tibial nerve and common fibula nerve
Tibial nerve arises from the ___________ spinal nerves
Ventral rami of L4-S3
Innervates muscles of posterior thigh, posterior leg, and sole of feet
Tibial nerve
Common fibula nerve arises from ____________ spinal nerves
Ventral rami of L4-S2
Innervates the posterior thigh, lateral and anterior leg, dorsum of the foot, as well as cutaneous to anterior and lateral leg, an parts of the sole and dorsum of foot
Common fibula nerve
Where do the common fibula and tibial nerve split from being the sciatic nerve?
Popliteal region