Lower Limbs :( Flashcards
Leg bone that is closer to the midline
Tibia
Leg bone that is farther from the midline
Fibula
Hip Joint Formation
Round head of the femur articulates with the acetabulum of the pelvic bone.
Acetabular Labrum
Piece of fibrocartilage in Acetabulum for head of the femur to sit on
Transverse Acetabular Ligament
ligament that closes off the hip joint to make a bigger socket for the head of the femur to articulate with
Ligament for head of the Femur
Fovea Capitis- this attaches into the acetabular fossa
Linea Aspera
Long ridge on the back of the Femur where muscles attach usually
Does Femur has direct connection with the Fibula?
Nope
Ankle Joint is made up of (part of the leg)
Both Tibia and Fibula articulates with the Tarsals to form a ankle joint
Medial Malleous is part of
Tibia distally
Lateral Malleous is part of
Distal Fibula
Which bone articulates with Tibia and Fibula at the ankle
Talus
Calcaneus
Heel Bone
Which bones make up the proximal Tarsals bone
Calcaneus, and Talus
Distal Group of Tarsal
Cuboid Bone, navicular, and 3 types cuneiforms
Importance of Calcaneus
Is Important for muscle attachments for plantar flexion (gas pedal) for the calcaneal tendon
What type of Joint is Knee Joint
Synovial Hinge Joint
composition of Knee Joint
1) Articulation between femur and tibia
2) Articulation between femur and patella
What holds Patella before articulating with the Femur
Patella is attached to the quadriceps femoris tendon superiorly and patella ligament inferiorly
Cartilage that are padding the joint between the Femur and Tibia (name 2)
Medial and Lateral menisci
When Physician pads below the knee joint, what is it checking for
Patellar Reflex
Ligaments that prevent lateral/medial displacement of the knee
1) Fibular (lateral) collateral ligament- prevents too much medial movement
2) Tibial (medial) collateral ligament- prevents too much lateral movement
Types of Cruciate Ligaments
Anterior Cruciate Ligament (ACL) and Posterior Cruciate Ligament (PCL)
Ligament that prevents anterior displacement of the Tibia
Anterior Cruciate Ligament. (runs from tibia and medial meniscus to back of femur)
PCL Ligament
Posterior Cruciate Ligament (PCL)- prevents posterior displacement of the tibia. (runs from posterior tibia to posterior femur (behind ACL))
If an athlete injures ACL compartment of his leg, what are the other possible sites for injury
medial meniscus, and tibial collateral ligaments are likely to be injured as well.
Difference between FCL(lateral) and rest of the joint vs MCL and ACL and rest of the joint
There is a space between the lateral collateral ligament and the rest of the joint, but there isnt a space between the MCL and the ACL and rest of the joint.
Illiotibial Tract (IT band)
Lateral thickening of fascia lata- important for stabilizing the hip and knee
Fascia Lata after crossing the knee region continues into
Deep Fascia of Leg (they are CONTINUOUS)
Main action of Anterior Thigh muscles
Extend knee
Innervation for Anterior Thigh Muscles
Femoral Nerve
Main action for Medial Thigh Muscles
ADduct of the hip and medial rotation of thigh
Major Nerve innervation of Medial Thigh muscles
Obturator nerve
Main action and Innervation for Posterior Thigh Muscles
Action- to Flex knee and Innervated by Sciatic Nerve
Action of Sartorius
Flexes Hip and Knee, External Rotation and aBduction
Origin and Insertion of Sartorius
Muscle runs obliquely downward from ASIS to medial side of tibia.
What innervates Sartorius
Femoral Nerve (*All Anterior Thigh compartment)
Which muscle can be found directly posterior to Rectus Femoris
Vastus Intermedius
How is Rectus Femoris different from other other Quadriceps muscle
Rectus Femoris crosses two joints so it can Flex Hip as well as Extending knee. Other three can ONLY extend knee
Innervation for Quadriceps Femoris
Femoral Nerve
Muscles that make up the Anterior Thigh Compartment
Sartorius, Quads (Rectus femoris, Vastus lateralis, Vastus intermedius, and Vastus medialis)
Action of Gracilis
(medial compartment of the Thigh)- aDduction of thigh
Although Pectineus is part of Medial compartment of the thigh, it is difference than the other because
It’s innervated by Femoral nerve
Adductor group is made up how many muscles
3 muscles (ADuctor longus, brevis, and magbus). Magun is the biggest of all
Innervation of Adductor Magnus
Obturator nerve (main one for Medial Thigh Comp) plus Sciatic Nerve
Muscles that make up the medial thigh compartment
Gracilis, Pectineus, and Adductor Group (longus, brevis, and magnus)
What muscles make up the posterior compartment of Thigh?
(Hamstring Group)
Biceps femoris, Semitendinosus, and Semimembranosus
lateral most muscle of Posterior Thigh
Biceps femoris (runs from pelvic bone to fibula)
Medial most muscle of Posterior thigh
Semimembranous (runs from pubic bone to tibia)
Position of Semitendinosus in respect to other two Posterior thigh muscles
Semitendinosus is Medial to biceps femoris and Top (posterior) of semimembranosus
Action of all Hamstring Group muscles
Flex the knee and extend the hip
Which muscle do we use to extend the hips back from a seated position
Gluteus Maximus
Innervation of Hamstring Group Muscles
SCIATIC NERVE
Biceps Femoris, Semitendinosus, and Semimembranosus
While workout, if a person flexing the knee and extending the hips constantly, what muscle region of the body is that person working on>
Hamstring group of muscles
Boundaries of the Femoral Triangle
Sartorius Muscle (Laterally), Adductor Longus (Medially), and Inguinal Ligament (Superiorly)
If a physician has to perform a procedure around Femoral Nerve, where should he be careful not to inject?
not to inject Lateral to Femoral Artery where Femoral nerve is found. Medial to Femoral Artery is Femoral Vein.
“NAVel”
Contents of the Femoral Triangle (Lateral to Medial)
NAVel
Femoral Nerve, Femoral Artery, Femoral Vein, and Lymphatics
which is a major pulse point on the anterior thigh in the femoral triangle?
Femoral Artery
How does the Femoral Triangle content supplies the lower limb?
Through Adductor Canal.
Femoral triangle is continuous inferiorly with the adductor canal which allows passage of femoral AV (Artery/Vein) into the popliteal fossa.
Femoral artery and vein as it goes behind the knees changes into
Popliteal artery and vein
Adductor Canal is important for?
To allow passage of Femoral Artery and Vein into the popliteal fossa.
Boundaries of the Popliteal Fossa
Semitendinosus/Semimembranosus medially, Biceps Femoris laterally, and two heads of gastrocnemius and plantaris, inferiorly.
What travels through the Popliteal Fossa?
Popliteal artery and Vein (continuation of femoral vessels in the thigh), Tibial and Common Fibular nerves (branches of the Sciatic Nerve)
Sciatic Nerve as it travels toward Popliteal Fossa, what does it branches into?
Tibial and Common Fibular Nerves
Pes Anserinus (Name 3 muscles)
On medial thigh, 3 muscles that insert on the tibia to support the knee from the medial position. -Sartorius (anterior thigh) -Gracialis (medial thigh) -Semitendinosus (posterior thigh) Looks like GOOSE'S FOOT
Innervation of Posterior Leg Muscles
Tibial (Branch off of Sciatic Nerve)
Innervation for Lateral Leg Muscles
Superficial Fibular Branch (Branches off of Common Fibular which branches off of Sciatic Nerve)
Innervation for Anterior Leg muscle
Deep Fibular Branch (Branches off of Common Fibular branch which branches off of Sciatic Nerve)
General action for Posterior Leg Muscles
Flexor Compartment: Plantar Flexion and Flex Toes
General Action for Lateral Leg Muscles
Eversion of foot
General Action for Anterior Leg Muscles
Dorsiflexion
Superficial Posterior Leg Muscles (3) and their common Innervation
Gastrocnemius, Soleus (flat show sole), and Plantaris.
Action of Superficial Posterior Leg Muscles
Plantarflexes the foot and flex the knee (Gastrocnemius and Plantaris)
What muscle is deep to Gastrocnemius muscle?
Soleus Muscle (Superficial Posterior Leg muscle)
Common Insertion for Superficial Posterior Leg Muscles
Calcaneal Tendon
If the achilles tendon gets ruptured, then what is the effect as a result of that
Can’t push off the ankle so have the drag the foot.
Insertion of Popliteus
Triangular muscle near knee. It goes from Femur to the Tibia.
Action of Popliteus
Stabilizes the knee and unlocks it from the extended position. (DOES NOT HAVE ANYTHING TO DO WITH THE ANKLE). Slightly rotates the tibia to unlock the knee joint from the extended position
Action of Tibialis Posterior
Inversion and Plantarflexion
Action of Flexor Hallucis Longus
Plantarflexes and inverts foot; flexes great TOE at all joints
Action of Flexor Digitorum Longus
Plantarflexes and inverts foot; flexes toes
Deep Posterior Leg Muscles (Name 4) and common innervation
Popliteus, Tibialis posterior, Flexor hallucis longus, and Flexor digitorum longus.
Common Innervation: Tibial Nerve
What Innervates Fibularis Longus and Brevis?
Superficial Fibular Nerve (Part of Lateral Leg Muscles)
Lateral Compartment of Leg muscles
Fibrularis Longus and Fibrularis Brevis
Action of Fibularis Longus and Brevis?
Eversion of Foot (can also do Plantarflexion)
What muscles make up the Anterior Leg Compartment? (4 Names) and common innervation
Tibialis anterior, Extensor hallucis longus, Extensor digitorum longus, and Fibularis tertius
Innervated by Deep Fibular nerve (branch off of common fibular nerve from Sciatic)
Action of Tibialis Anterior
Dorsiflexion and inversion of foot
Action of Extensor hallucis and digitorum longus
Dorsiflexion and extension of toes
Action of Fibularis Tertius
Dorsiflexion