FOOT AND ANKLE PRACTICAL Flashcards
Action of Gastrocnemius
Plantarflexor and knee flexor
Which muscle is the most superficial calf muscle?
Gastrocnemius
Origin of the medial head of Gastrocnemius
Medial supracondylar ridge and femoral tubercle
Origin of the lateral head of Gastrocnemius
Lateral femoral condyle
Insertion of Gastrocnemius
Via tendocalcaneus into posterior surface of calcaneus
Nerve supply of Gastrocnemius
Tibial nerve S1 S2
Gastrocnemius function
Walk up stairs
Brief explanation of how to palpate Gastrocnemius
Model in prone lying.
Plantarflex foot and flex knee to 50 degrees.
Resist.
Palpate either side of knee down to tendocalcaneus.
Action of Soleus
Plantarflexes ankle
Which muscle lies deep to Gastrocnemius?
Soleus
Origin of Soleus
Soleal line on the posterior of tibia, and lateral 2/3 fibula
Insertion of Soleus
Via tendocalcaneus into the posterior surface of calcaneus
Nerve supply of Soleus
Tibial nerve S1 S2
Function of Soleus
Ankle stability, prevents forward tilt
Brief explanation of how to palpate Soleus
Model in prone lying.
Resist plantarflexion
Palpate under heads of gastroc and either side of tendocalcaneus.
Function of Soleus
Ankle stability. Prevent forward tilt
Action of Tibialis Anterior
Dorsiflexes and inverts foot
Origin of Tibialis Anterior
Upper 2/3 of lateral tibia and interosseous membrane
Insertion of Tibialis Anterior
Medial side of medial cunieform and 1st metatarsal base
Nerve supply of Tibialis Anterior
Deep peroneal nerve L4 L5
Brief explanation of palpation of Tibialis Anterior
Model in long sitting
Resist dorsiflexion and inversion
Palpate lateral to tibia to medial side of foot
Function of Tibialis Anterior
Clearance of foot during gait swing
Action of Extensor Hallucis Longus
Dorsiflexes foot and big toe extension
Origin of Extensor Hallucis Longus
Middle 1/2 of fibula and interosseous membrane
Insertion of Extensor Hallucis Longus
Dorsal surface base of distal phalanx of big toe (hallux)
Nerve supply of Extensor Hallucis Longus
Deep peroneal nerve L5 S1
Brief explanation of palpation of Extensor Hallucis Longus
Model in long sitting
Resist great toe extension
Find tendon, palpate proximally
Function of Extensor Hallucis Longus
Toe clearance in gait swing
Action of Extensor Digitorum Longus
Dorsiflexes ankle. Extends the four toes
Origin of Extensor Digitorum Longus
Upper 2/3 fibula, interosseous membrane and lateral tibial condyle
Insertion of Extensor Digitorum Longus
Forms extensor hood, attaches the distal and middle phalanx of the four toes on upper surface.
Nerve supply of Extensor Digitorum Longus
Deep peroneal nerve L5 S1
Brief explanation of palpation of Extensor Digitorum Longus
Model in long sitting Resist toe extension Locate four tendons Palpate proximally until four tendons join (just under fibula)
Function of Extensor Digitorum Longus
Toe clearance in gait swing
Action of Peroneus Longus and Brevis
Everts and plantarflexes foot
Origin of Peroneus Longus and Brevis
Longus- upper 2/3 of lateral fibula
Brevis- lower 1/3 of lateral fibula
Insertion of Peroneus Longus and Brevis
Bottom of medial cunieform, base of 1st metatarsal and base of 5th metatarsal
Nerve supply of Peroneus Longus and Brevis
Superficial peroneal nerve L5 S1
Function of Peroneus Longus and Brevis
Balance on one leg support
Brief explanantion of palpation of Peroneus Longus and Brevis
Model in long sitting
Resist eversion
Palpate lateral side of fibula down to ankle lateral malleolus
Action of Tibialis Posterior
Inverts and plantarflexes the foot
Origin of Tibialis Posterior
Upper posterior tibia, posterior surface of fibula and interosseous membrane
Insertion of Tibialis Posterior
Navicular tubercle and medial cunieform
Nerve supply of Tibialis Posterior
Tibial nerve L4 L5
Brief explanation of palpation of Tibialis Posterior
Model in long sitting
Ask model to plantarflex and invert foot
Only palpable tendon at the medial malleolus
Function of Tibialis Posterior
Balance one leg and arch support