What is the neutral position of the subtalar articulation?

Neutral position of the subtalar joint (STJ) is determined by palpating the head of the talus and moving the foot. When the talus appears to bulge equally at each side, the STJ is in neutral.

This is where subtalar neutral comes into place. Simply put, the orthopedic definition of subtalar neutral is the position in which the forefoot is locked on the rearfoot with maximum pronation of the midtarsal joint. Or you may say, when the foot is neither pronated nor supinated.

Subsequently, question is, what is neutral ankle position? The ankle joint is maintained by the shape of the talus and its tight fit between the tibia and fibula. In the neutral position, there are strong bony constraints. With increasing plantar flexion, the bony constraints are decreased and the ligaments are more susceptible to strain and injury.

In respect to this, how is subtalar joint neutral position calculated?

Measure total subtalar ROM (inversion + eversion) in degrees. Divide by three to obtain a number n. The subtalar joint is neutral when the rearfoot is inverted n degrees from the position where it is maximally everted.

What is subtalar eversion?

With regard to the subtalar joint, its articulated structure enables the inversion or eversion of your foot. While inversion and eversion are components of pronation and supination, respectively, they specifically involve the hindfoot rather than the entire foot. With inversion, you rotate your ankle inward.

What causes subtalar joint pain?

Subtalar arthritis is characterized by pain in the hindfoot that is aggravated by standing and walking, particularly on uneven ground. The most common cause of subtalar arthritis is a previous injury – usually a calcaneal fracture, or abnormal alignment of the heal bone.

What is subtalar arthritis?

Subtalar arthritis refers to degenerative changes in the cartilage of the subtalar joint. The most common cause of subtalar arthritis is traumatic injury to the hindfoot and is commonly seen after fracture to the calcaneus or talus. Presenting symptoms of subtalar arthritis include pain and swelling in the hindfoot.

What does subtalar mean?

Medical Definition of subtalar : situated or occurring beneath the talus specifically : of, relating to, or being the articulation formed between the posterior facet of the inferior surface of the talus and the posterior facet of the superior surface of the calcaneus the subtalar joint subtalar arthrodesis.

What motion does the subtalar joint do?

The kinematics of the subtalar joint allows the combined motions of inversion/adduction and eversion/abduction of the rearfoot (Fig. 11.15). (Recall that these motions are components of supination and pronation, respectively.)

What is rearfoot eversion?

Rearfoot eversion was defined as frontal plane movement of the rearfoot (calcaneus) during running. The angle between the line made by the upper two markers and lower two markers were defined as rearfoot eversion angle.

What joint allows inversion and eversion of the foot?

subtalar

What is calcaneal eversion?

Calcaneal eversion occurs in the frontal plane. It is one component of the tri-plane motion of pronation of the subtalar joint (STJ). The calcaneal eversion results from the striking the lateral aspect of the heel when we walk. The ground reaction force (GRF) forces the calcaneus to evert.

What are the Midtarsal joints?

The midtarsal joint (MTJt) consists of the combined articulations of the talonavicular and calcaneocuboid joints and represents the functional articulation between the rearfoot (talus and calcaneus) and the midfoot (navicular and cuboid).

What type of joint is the ankle?

hinge

What is a subtalar joint fusion?

Subtalar Fusion. This surgical procedure is used to help relieve pain in the joint beneath the ankle joint and correct deformities in the hindfoot caused by injury, arthritis, or genetic defect. The procedure fuses the calcaneus (the heel bone) to the talus, the bone that connects the foot to the ankle.