What is the subtalar joint responsible for?
The subtalar joint, also known as the talocalcaneal joint, is a compound joint positioned directly below the ankle joint. The subtalar joint is vital to movement as it helps to readjust the lateral (side-to-side) position of your foot as you navigate uneven or shifting terrain.
What is the subtalar joint?
Subtalar joint is made up of articulation between three joint surfaces inferiorly talus with three joint surfaces superiorly calcaneus (Fig. 23.14) (Drake et al., 2015; Bartonicek et al., 2018). Subtalar joint functions as a bridge between foot and ankle; transferring loads from foot to tibia or from tibia to foot.
What kind of joint is the subtalar joint?
In human anatomy, the subtalar joint, also known as the talocalcaneal joint, is a joint of the foot. It occurs at the meeting point of the talus and the calcaneus. The joint is classed structurally as a synovial joint, and functionally as a plane joint.
What bones make up the Talocrural joint?
Three bones come together to form the talocrural joint: the tibia and fibula in the lower leg, and the talus in the foot. Held together by strong ligaments, the tibia and fibula form a bracket-shaped socket (mortise). The wedge-shaped end of the talus fits snugly into the mortise.
What causes subtalar joint arthritis?
The most common cause of subtalar arthritis is trauma due to an injury such as a calcaneal fracture, or abnormal heel bone alignment. However, there are also other fractures which involve the talar body, that can cause subtalar arthritis.
What does the Midtarsal Joint do?
The midtarsal joint contributes to inversion (supination) and eversion (pronation) movements at the subtalar joint. It also allows 20° of adduction (foot turned toward the midline) and 10° of abduction (foot turned away from the midline).
What is subtalar joint pronation?
Subtalar pronation influences the alignment of the two axes of the midtarsal joint, making them more parallel. Parallel alignment of the midtarsal axes permits the foot to be flexible and to adapt to different surfaces.
Is the subtalar joint an intermediate joint?
Response: I think of ankle, subtalar, talo-navicular and calcaneo-cuboid joints as intermediate joints (CPT 20605). Joints distal to those I consider to be small joints.
What is fibula bone?
The fibula, sometimes called the calf bone, is smaller than the tibia and runs beside it. The top end of the fibula is located below the knee joint but is not part of the joint itself. The lower end of the fibula forms the outer part of the ankle joint.
What’s the back of the ankle called?
Posterior Malleolus
Posterior Malleolus: Felt on the back of your ankle and is also a part of the base of the tibia. Lateral Malleolus: Bony protrusion felt on the outside of the ankle. The lateral Malleolus is the low end of the Fibula.
How do you fix a subtalar joint?
Subtalar fusion is usually performed under general anaesthetic. It usually takes about 90 minutes. Your surgeon will make an incision (cut) on the outside of your ankle. They will clean and clear any damaged joint surfaces and fix your joint together using one or two screws through the back of your heel.