Podcast
Questions and Answers
What is the function of the interosseous membrane?
What is the function of the interosseous membrane?
- Connects the tibia and fibula together (correct)
- Provides lateral stability to the ankle
- Allows the tendon of the quadriceps femoris to glide smoothly
- Forms the distal tibiofibular joint
Which of the following bones is the only weight-bearing bone of the crural region?
Which of the following bones is the only weight-bearing bone of the crural region?
- Calcaneus
- Talus
- Fibula
- Tibia (correct)
What does the tibial tuberosity mark the attachment site for?
What does the tibial tuberosity mark the attachment site for?
- Fibular notch
- Patellar ligament (correct)
- Quadriceps femoris tendon
- Medial malleolus
Which bone articulates with the tibia and fibula?
Which bone articulates with the tibia and fibula?
What provides lateral stability on the lateral side of the ankle?
What provides lateral stability on the lateral side of the ankle?
Which structure distributes the force placed on the tendon of the quadriceps femoris?
Which structure distributes the force placed on the tendon of the quadriceps femoris?
What is the largest and strongest heel bone called?
What is the largest and strongest heel bone called?
Which bone in the lower limb is the longest, heaviest, and strongest in the body?
Which bone in the lower limb is the longest, heaviest, and strongest in the body?
What is the name of the joint between the metatarsals and the phalanges in the foot?
What is the name of the joint between the metatarsals and the phalanges in the foot?
Which arch of the foot is responsible for extending from the heel to the great toe?
Which arch of the foot is responsible for extending from the heel to the great toe?
What structure in the femur articulates with the os coxae at the acetabulum?
What structure in the femur articulates with the os coxae at the acetabulum?
What happens to the arches of the foot when body weight is applied?
What happens to the arches of the foot when body weight is applied?
Which part of the femur is a landmark and a site of intramuscular injection in the thigh?
Which part of the femur is a landmark and a site of intramuscular injection in the thigh?
Which bones articulate with metatarsals IV and V in the foot?
Which bones articulate with metatarsals IV and V in the foot?
What connects the lesser and greater trochanters in the femur?
What connects the lesser and greater trochanters in the femur?
Which muscle attaches to the gluteal tuberosity in the femur?
Which muscle attaches to the gluteal tuberosity in the femur?
What is the function of the tarsal bones in the foot?
What is the function of the tarsal bones in the foot?
What separates the medial and lateral condyles in the femur?
What separates the medial and lateral condyles in the femur?
Which muscles mainly originate from the pelvic girdle and thigh (femur) to move the knee joint?
Which muscles mainly originate from the pelvic girdle and thigh (femur) to move the knee joint?
Which part of the patella forms the patellofemoral joint and protects the knee joint?
Which part of the patella forms the patellofemoral joint and protects the knee joint?
What is the common action of the muscles in the Anterior compartment of the leg?
What is the common action of the muscles in the Anterior compartment of the leg?
Which muscle in the Lateral compartment of the leg everts the foot and is weaker in flexing plantar?
Which muscle in the Lateral compartment of the leg everts the foot and is weaker in flexing plantar?
What is the function of Gastrocnemius muscle in the Posterior compartment?
What is the function of Gastrocnemius muscle in the Posterior compartment?
Which muscle in the Posterior Flexor Muscles group has an insertion point on the shaft of tibia?
Which muscle in the Posterior Flexor Muscles group has an insertion point on the shaft of tibia?
Where does Biceps femoris muscle from the Posterior Flexor Muscles group originate from?
Where does Biceps femoris muscle from the Posterior Flexor Muscles group originate from?
Which muscle in the Anterior compartment of the leg is responsible for dorsiflexion and inversion of the foot?
Which muscle in the Anterior compartment of the leg is responsible for dorsiflexion and inversion of the foot?
What action do both muscles in the Lateral compartment perform on the foot?
What action do both muscles in the Lateral compartment perform on the foot?
Which artery supplies the hip joint and thigh muscles?
Which artery supplies the hip joint and thigh muscles?
Which artery supplies the posterior compartment of the leg?
Which artery supplies the posterior compartment of the leg?
Which artery is the main arterial supply for the lower limb?
Which artery is the main arterial supply for the lower limb?
Which vein is located in the anterior compartment of the leg?
Which vein is located in the anterior compartment of the leg?
Which vein does not drain blood from the lower limb?
Which vein does not drain blood from the lower limb?
Which artery supplies the knee joint and muscles?
Which artery supplies the knee joint and muscles?
Study Notes
Tibia and Fibula
- The tibia is a strong and weight-bearing bone, while the fibula is slender.
- The two bones are connected by the interosseous membrane composed of dense regular connective tissue.
- The tibia has a tibial tuberosity that marks the attachment site for the patellar ligament.
- The medial malleolus is a palpable bump on the medial side of the ankle.
- The distal tibiofibular joint is formed by the fibula articulating at the fibular notch.
- The lateral malleolus provides lateral stability on the lateral side of the ankle.
Foot-Tarsals, Metatarsals, and Phalanges
- The foot consists of 26 bones.
- There are 7 tarsal bones, including the talus, calcaneus, navicular, cuboid, and 3 cuneiform bones.
- The talus articulates with the tibia and fibula.
- The calcaneus is the largest and strongest heel bone.
- There are 5 metatarsal bones, each consisting of a base, shaft, and head.
- There are 14 phalanges, with the big toe being the hallux.
Arches of the Foot
- There are two arches that support the weight of the body: the medial longitudinal arch and the lateral longitudinal arch.
- The arches provide spring and leverage to the foot when walking.
- The arches flex when body weight is applied.
- Flatfoot occurs when the arches decrease or "fall".
- Clawfoot occurs when there is too much arch due to various pathologies.
Muscles of the Thigh and Leg
- The quadriceps femoris group consists of muscles that extend the knee joint.
- The hamstring group consists of muscles that flex the knee joint.
- The anterior compartment of the leg consists of muscles that dorsiflex the foot and extend the toes.
- The lateral compartment of the leg consists of muscles that evert the foot.
- The posterior compartment of the leg consists of muscles that plantar flex the foot.
Blood Flow to the Lower Limb
- The main arterial supply to the lower limb is the external iliac artery.
- The femoral artery supplies the hip joint and thigh muscles.
- The popliteal artery supplies the knee joint and muscles.
- The anterior tibial artery supplies the anterior compartment of the leg.
- The posterior tibial artery supplies the posterior compartment of the leg.
- The plantar arch and digital arteries supply the foot.
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Description
Test your knowledge on the skeleton of the lower limb, including the pelvic girdle, thigh bones like femur and patella, and the foot. Learn about the structure and functions of these bones.
