The video tutorial explores the calcaneus, the largest bone in the foot, known as the heel bone. It is located in the posterior foot, inferior to the talus, and plays a crucial role in weight bearing and stability. The calcaneus serves as a lever for the Soleus and gastrocnemius muscles, which attach via the Achilles tendon. The bone's structure includes a concavo-convex shape and features like the calcaneal sulcus and perineal tubercle. It articulates with the talus and cuboid bones, possessing three articular facets for the talus. The calcaneus provides ample surface area for muscle attachments, including the gastrocnemius, Soleus, and various extensor and abductor muscles.

What is the primary function of the calcaneus in the foot?

• To connect directly with the femur

• To form the arch of the foot

• To act as a lever for the Soleus and gastrocnemius muscles

• To provide attachment for the quadriceps muscle

Which tendon is commonly known as the Achilles tendon?

• Tibial tendon

• Plantar tendon

• Calcaneal tendon

• Patellar tendon

What is the function of Keggers fat pad in relation to the calcaneus?

• To support the Achilles tendon

• To form the arch of the foot

• To cushion the metatarsals

• To connect the calcaneus to the tibia

Which feature of the calcaneus forms the sinus tarsi with the talus?

• Cuboidal articular surface

• Calcaneal sulcus

• Perineal tubercle

• Calcaneal tuberosity

How many articular facets does the calcaneus have for the talus?

• Two

• One

• Three

• Four