Skeletal Anatomy: Tibia, Fibula, and Foot Bones

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Questions and Answers

Which feature of the tibia serves as the attachment site for the patellar ligament?

Medial malleolus

Proximal condyles

Anterior border

Tibial tuberosity (correct)

What is the primary function of the lateral malleolus?

To facilitate movement of the fibula

To support the posterior aspect of the tibia

To provide lateral stability to the ankle (correct)

To provide medial stability to the ankle

In an anterior view, which of the following statements correctly describes the fibula?

Its head is superior to the tibia's medial condyle.

It articulates with the medial malleolus.

It has a knob-like head inferior and posterior to the tibia's lateral condyle. (correct)

It has a prominent anterior border.

Which of the following tarsal bones is known as the heel bone?

Calcaneus Signup and view all the answers

What is the anatomical term for the prominent ridge along the anterior tibial surface?

Anterior border Signup and view all the answers

What is the primary function of the medial longitudinal arch of the foot?

To support the weight of the body Signup and view all the answers

Which bones are primarily involved in forming the medial longitudinal arch?

Calcaneus, talus, navicular, and metatarsals I-III Signup and view all the answers

What is the role of the arches of the foot in relation to blood vessels and nerves?

To prevent pinching under weight-bearing conditions Signup and view all the answers

Which of the following arches is the highest in the foot?

Medial longitudinal arch Signup and view all the answers

What characteristic does the medial longitudinal arch give to a person's footprint?

A distinctive shape conforming to the arch Signup and view all the answers

Which arch is specifically responsible for stability during lateral movements?

Lateral longitudinal arch Signup and view all the answers

How do the arches of the foot affect the mechanics of walking?

They distribute weight evenly across the foot Signup and view all the answers

Which bone serves as the largest tarsal bone, providing attachment for the Achilles tendon?

Calcaneus Signup and view all the answers

How many metatarsal bones are present in each human foot?

5 Signup and view all the answers

What are the names of the bones that make up the toes?

Phalanges Signup and view all the answers

Which of the following bones articulates with the lateral cuneiform and calcaneus?

Cuboid Signup and view all the answers

Which statement accurately describes the arrangement of phalanges in the foot?

The great toe has 2 phalanges, while all other toes have 3. Signup and view all the answers

Which of the following tarsal bones is located on the medial side of the ankle?

Navicular Signup and view all the answers

In what configuration are the metatarsals arranged in the foot?

From medial to lateral, numbered I-V Signup and view all the answers

What is the primary function of the sesamoid bone located at the base of the first metatarsal?

To assist in the flexion of the great toe Signup and view all the answers

Study Notes

Tibia and Fibula

The tibia and fibula articulate at the tibiofibular joint.
The tibial tuberosity is a rough anterior surface of the tibia, near the proximal condyles.
The anterior border of the tibia, called the shin, extends from the tibial tuberosity.
The medial malleolus is the prominence formed by the medial aspect of the tibia.
The fibula is located lateral to the tibia and has a knob-like head, a shaft, a neck, and the distal lateral malleolus.

Bones of the Tarsals, Metatarsals, and Phalanges

The tarsals, metatarsals, and phalanges form the ankle and foot.
The seven tarsal bones resemble the carpals but have different shapes.
The calcaneus, the largest tarsal bone, is the heel bone.
The navicular bone is located on the medial side of the ankle.
The metatarsals resemble the metacarpals but there are five, numbered I-V from medial to lateral.
The phalanges form the toes; the great toe (hallux) has 2 phalanges and the other toes have 3 each.

Arches of the Foot

The three arches of the foot are the medial longitudinal arch, lateral longitudinal arch, and transverse arch.
The medial longitudinal arch is the highest arch and extends from the heel to the great toe.
The lateral longitudinal arch is less prominent, and extends from the heel to the little toe.
The transverse arch is perpendicular to the longitudinal arches, passing through the distal row of tarsals and the base of the metatarsals.
The bones of the foot interlock and ligaments and muscles help maintain the arches’ shape.

Clinical View: Pathologies of the Foot

Bunions are characterized by a localized swelling at the first metatarsophalangeal joint.
Pes planus or flat feet involves flattening of the medial longitudinal arch.
Pes cavus or clawfoot is the opposite of flat feet, with a highly arched longitudinal foot.
Talipes equinovarus or congenital clubfoot is a foot deformity where the feet are permanently inverted and plantar flexed.
Metatarsal stress fractures are small cracks in the outer surface of the metatarsals.

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Description

Test your knowledge on the anatomy of the tibia and fibula, as well as the bones of the tarsals, metatarsals, and phalanges. Understand their functions, locations, and characteristics in the human skeletal system. This quiz will enhance your comprehension of lower limb anatomy.