Week 9 - Subtalar joint

Question 1

Subtalar joint is made up of two joints, name them and what are their joint classifications and shape.

Answer 1

Talocalcaneal joint: synovial (plane shape)

Talocalcanealnavicular joint: synovial (ball & socket shape)

Question 2

What movements occur at the subtalar joint?

Answer 2

Inversion and eversion

Question 3

Ligament that runs between the talus and calcaneal sinus and which facets does it divide?

Facet = articulation surface (remember the talus has multiple)

Answer 3

Interosseous talocalcaneal ligament, dividing the posterior and middle talocalcaneal facet

Question 4

How many facets does the subtalar joint have?

Answer 4

3, anterior, middle and posterior facets

Question 5

Is it possible to palpate all of the posterior lateral subtalar joint? and why?

Answer 5

No, the structure that prevents this is the calcaneal tendon.

Question 6

What axis does inversion and eversion occur around?

Answer 6

A diagonal axis

Question 7

Subtalar joint ligaments

Answer 7

A lot between the talus and inferior bones (navicular, calcaneum, cuniforms, cuboid)

Question 8

What does the interosseus talocalcaneal ligament do?

Answer 8

Divides the STJ in half, very strong and keeps talus and calcaneum bonded together

Question 9

What is the sinus tarsi?

Answer 9

Osseous tunnel that runs from lateral to medial side of foot, between the talus and calcaneum. It is lined with synovium and the interosseous ligament sits inside it.

Question 10

3 types of ankle joint alignment

Answer 10

Typical, pes valgus pronation eversion, pes varus supination inversion

Question 11

What Q-angle would occur at the knee joint if there was foot pronation?

Answer 11

Valgus