Lower Limb Nerve and Artery Branches Anatomy
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Questions and Answers

What is the main muscular deficit associated with a common fibular nerve injury?

  • Inability to plantarflex
  • Inability to evert the foot
  • Inability to invert the foot
  • Inability to dorsiflex (correct)
  • Which gait abnormality is typically seen as a compensatory mechanism for 'foot drop'?

  • Pigeon-toed gait
  • Circumduction gait
  • Waddling gait (correct)
  • Swayback gait
  • If left untreated, compartment syndrome may lead to:

  • Muscle hypertrophy
  • Enhanced blood flow
  • Increased range of motion
  • Necrosis of affected tissues (correct)
  • Which nerve can be compressed deep to the inferior extensor retinaculum, leading to 'ski boot syndrome'?

    <p>Deep fibular nerve</p> Signup and view all the answers

    Injury to which nerve would result in sensory deficits specific to the dorsum of the foot?

    <p>Superficial fibular nerve</p> Signup and view all the answers

    How would you differentiate between a common fibular nerve injury and a deep fibular nerve injury based on motor deficits?

    <p>Common fibular - inability to plantarflex; Deep fibular - inability to dorsiflex</p> Signup and view all the answers

    Which nerve innervates the muscles of the posterior compartment of the leg, responsible for plantarflexion and supination/inversion?

    <p>Tibial nerve</p> Signup and view all the answers

    Which nerve innervates the muscles of the lateral compartment of the leg, responsible for eversion and pronation?

    <p>Superficial fibular nerve</p> Signup and view all the answers

    Which nerve innervates the muscles of the anterior compartment of the leg, responsible for dorsiflexion?

    <p>Deep fibular nerve</p> Signup and view all the answers

    What is the primary function of the tibial nerve during the gait cycle?

    <p>Plantarflexion during stance phase</p> Signup and view all the answers

    Which nerve is formed by the combination of the medial sural cutaneous nerve (from the tibial nerve) and the communicating branch of the lateral sural cutaneous nerve (from the common fibular nerve)?

    <p>Sural nerve</p> Signup and view all the answers

    During the swing phase of the gait cycle, which nerve is primarily responsible for the dorsiflexion of the foot?

    <p>Deep fibular nerve</p> Signup and view all the answers

    Which nerve innervates the gastrocnemius and soleus muscles?

    <p>Tibial nerve</p> Signup and view all the answers

    Which nerve is vulnerable to injury in the clinical case described?

    <p>Deep fibular nerve</p> Signup and view all the answers

    During the stance phase of the gait cycle, which muscles are primarily active?

    <p>Dorsiflexors and plantarflexors</p> Signup and view all the answers

    Which nerve innervates the tibialis anterior muscle?

    <p>Deep fibular nerve</p> Signup and view all the answers

    During the swing phase of the gait cycle, which muscles are primarily active?

    <p>Plantarflexors only</p> Signup and view all the answers

    Which nerve provides sensory innervation to the lateral aspect of the dorsum of the foot?

    <p>Superficial fibular nerve</p> Signup and view all the answers

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