The Subtalar Joint | Anatomy, Basic Movements, & Ligaments

The video tutorial by Kevin Tolkoff covers the anatomy and function of the Talocrural and Subtalar joints. It explains the structure and movements of these joints, focusing on plantar flexion, dorsiflexion, eversion, and inversion. The video also discusses the ligaments that stabilize the Subtalar joint, including the deltoid and lateral collateral ligaments, and their role in limiting joint movements. Additionally, it highlights the commonality of inversion ankle sprains and the grading of such injuries.

What bones form the ankle mortise?

• Tibia and fibula

• Femur and patella

• Talus and calcaneus

• Navicular and cuboid

Which joint allows for plantar flexion and dorsiflexion?

• Hip joint

• Subtalar joint

• Talocrural joint

• Knee joint

What type of movements does the subtalar joint allow?

• Flexion and extension

• Pronation and supination

• Eversion and inversion

• Abduction and adduction

Which ligaments are found on the medial side of the subtalar joint?

• Deltoid ligaments

• Anterior cruciate ligaments

• Lateral collateral ligaments

• Posterior cruciate ligaments

Which muscle is primarily responsible for subtalar inversion?

• Soleus

• Tibialis posterior

• Fibularis longus

• Gastrocnemius

What is the main function of the lateral collateral ligaments?

• Limit inversion

• Limit eversion

• Facilitate plantar flexion

• Facilitate dorsiflexion

Which ligament is most likely to rupture in a Grade 1 inversion ankle sprain?

• Posterior talofibular ligament

• Calcaneofibular ligament

• Anterior talofibular ligament

• Deltoid ligament

What percentage of ankle sprains are inversion sprains?

• 85-90%

• 50-60%

• 25-30%

• 10-15%

Which ligaments are stronger, leading to more limited eversion?

• Deltoid ligaments

• Anterior cruciate ligaments

• Posterior cruciate ligaments

• Lateral collateral ligaments

Which muscle tendons pass over the calcaneofibular ligament?

• Gastrocnemius and soleus

• Fibularis longus and brevis

• Tibialis anterior and posterior

• Flexor digitorum longus and brevis