Lecture 4

Question 1

Triceps surae (gastroc-soleus group)

Answer 1

• Gastrocneumius + Soleus
• 3 heads with common insertion (middle 1/3 of posterior surface of calcaneus)
• Medial head is larger

Question 2

Triceps surae functions

Answer 2

• Powerful plantarflexors of talocrual joint (ankle joint)
• Supinators of subtalar joint
• Soleus is a 2 joint muscle
• Gastrocnemius is also a knee flexor (3-joint muscle)

Question 3

Equinus

Answer 3

• Inadequate ankle dorsiflexion that causes pathological compensation and/or pathology
• Can alter gait and increase forefoot pressure

Question 4

Equinus is caused by

Answer 4

• Contracted Achilles-gastrocnemius-soleus complex

Question 5

Equinus is seen in multiple conditions

Answer 5

• Neuromuscular conditions such as CP

- Diabetics have increased incidence of equinuus

Question 6

Equinus alters foot biomechanics and has been linked to

Answer 6

• Plantar fasciitis
• Achilles tendinopathy
• Metatarsalgia
• Ulcers in diabetics

Question 7

Transverse Vulpius gastrocsoleus recession zone 1

Answer 7

• From gastroc origin to most distal aspect of gastroc medial head

Question 8

Transverse Vulpius gastrocsoleus recession zone 2

Answer 8

• From distal aspect of gastroc medial head to the end of the soleal muscle fibers

Question 9

Transverse Vulpius gastrocsoleus recession zone 3

Answer 9

• Achilles (calcaneal) tendon